M. Abdul Nizar Nizar - Academia.edu (original) (raw)
Papers by M. Abdul Nizar Nizar
Field experiments were conducted involving 103 indigenous and exotic accessions of linseed germpl... more Field experiments were conducted involving 103 indigenous and exotic accessions of linseed germplasm during rabi 201112 and rabi 2012-13 at ICAR-NBPGR Regional Station, Akola with an objective to characterize the germplasm, assess the relative performance, estimate the genetic variability, heritability, genetic advance, correlation among seed and oil yields with other traits. The magnitude of variability for qualitative traits like seed coat colour, petal colour, flower shape, flower size and seed size was relatively higher than that of growth habit, lodging tendency and seed lustre. High GCV was recorded for seed yield per plant and number of capsules per plant and low GCV for days to maturity and oil content. High heritability coupled with high GA was recorded for number of capsules per plant and seed yield per plant and low heritability and GA was recorded for oil content. Significant positive correlation was recorded between seed yield with number of capsules per plant, plant he...
Biomass and Bioenergy, 2012
Variability in 35 accessions of niger (Guizotia abyssinica) was assessed for test weight and oil ... more Variability in 35 accessions of niger (Guizotia abyssinica) was assessed for test weight and oil quality parameters. Analysis of variance showed significant differences for test weight and oil parameters. The test weight varied from 260 to 440 mg. Total oil content ranged from 35.16% to 40.47%. The oleic acid ranged from 23.52 to 53.3% of the total fatty acids while linoleic acid ranged from 32.03 to 58.28%. High heritability (>90%) was recorded for all the oil parameters except for linoleic acid and test weight. The range of Manhattan distance coefficient values was 0.23e3.46 with a mean of 1.84. Cluster I included three accessions with highest linoleic acid (>53%), highest stearic acid (>8%), highest palmitic acid (>9%) and least oleic acid (<29%). These accessions were collected from Orissa state. Cluster II included two accessions with least oil content collected from Andhra Pradesh. The cluster III included 30 accessions and was divided into two sub-cluster i.e. IIIA; with low linoleic acid (<43%) and high oleic acid (>40%); and IIIB; with high linoleic acid (>44%) and low oleic acid (<37%). The cluster III contained the accessions representing Maharashtra and Madhya Pradesh. Thus, on the basis of present findings it is evident that a lot of variability exists for the oil quality parameters among the niger accessions grown in different states of the country. Hybridization between accessions of different clusters will result in creation of wide spectrum of variability in subsequent segregating generations for further use in breeding programmes.
Biomass and Bioenergy, 2012
Amongst minor oilseed crops, niger has not been given considerable importance as compared to the ... more Amongst minor oilseed crops, niger has not been given considerable importance as compared to the sunflower, safflower, linseed and sesame. A study on 35 niger genotypes was conducted to evaluate their potential in terms of oil quantity, quality and biodiesel traits. Oil quality was determined by fatty acid composition for two consecutive years and the results were compared with other minor oilseed crops. Niger oil has four major fatty acids namely palmitic, stearic, oleic and linoleic acid. Genotypes which showed consistent fatty acid profile for the 2 consecutive years were also reported. Oleic and linoleic fatty acids showed high variability ranging from 23.52 to 53.05% and 32.03e58.28%, respectively. High oleic (IC372586) and linoleic acid (IC211078, IC211080 and IC259393) containing genotypes were also identified. Total unsaturated fatty acid (81.79e85.06%) was found to be higher than total saturated fatty acid (14.94e18.21%). Based on saponification number (200.16e202.16) and Iodine value (105.69e126.7 g I 2 100 g À1) the niger oil finds its application in various industries while cetane number confirmed the use of it as biodiesel.
![Research paper thumbnail of Molecular characterization of niger [ Guizotia abyssinica (L.f.) Cass.] germplasms diverse for oil parameters](https://attachments.academia-assets.com/100095711/thumbnails/1.jpg)
](Molecular markers ISSR were used to assess the genetic diversity in 35 niger [Guizotia abyssinica... more Molecular markers ISSR were used to assess the genetic diversity in 35 niger [Guizotia abyssinica (L.f.) Cass.] germplasm accessions significantly differing for oil parameters. Of the 200 ISSR primers screened, 25 primers producing clear and polymorphic bands were selected. The efficiency of individual ISSR primers was also compared for the resolving power ranges (Rp; 0.16 to 7.5); number of banding patterns (Nb; 3 to 27); heterozygosity (H; 0.245 to 0.497); polymorphic information content (PIC; 0.215 to 0.374); and discrimination power (Dj; 0.138 to 0.992). The range of mean genetic similarities between accessions based on Jaccard’s similarity coefficient was significantly high (0.1 to 0.95) with a mean value of 0.40. The UPGMA clustering based on bootstrap analyses grouped the accessions into three major clusters. Although a significant genetic diversity was observed based on ISSR and biochemical markers, but only partial correlation between diversity based on these two parameters...
Journal of Environmental Biology, 2018
質的および量的形質データを用いたコアセットのインド国立遺伝子バンク開発で保存されているヒヨコマメ生殖質の特性評価【Powered by NICT】
Ethnobotany of turmeric (Curcuma longa L.)
607-614This paper deals with the ethnobotany of turmeric (Curcuma longa L.) - an ancient crop hav... more 607-614This paper deals with the ethnobotany of turmeric (Curcuma longa L.) - an ancient crop having its origin and early domestication in South Asia and ethnobotanically very important. Due to its manifold uses in cultural and social life of ethnic people of Asia with special reference to South and South East Asia, has very early domestication and evolutionary history. In India, its history begins from time immemorial, probably much prior to the great Indus valley civilization. It is grown from time immemorial in Orissa. It has been mainly used as a colouring agent, a magic substance and a substance of religious importance and medicine from ancient times. Also, several other species of the genus Curcuma are economically useful. An attempt has been made in the paper to assemble information and elucidate the historical, legendary, religious, literary and mythological aspects substantiating logically the probable origin of the crop in India. Its ethnic connections in relation to its c...
Variability and ethnobotany of jackfruit in Western Ghats of Kerala, India
Jackfruit is an important component of tree based homestead farming in humid south west India. Di... more Jackfruit is an important component of tree based homestead farming in humid south west India. Diversity for fruit characters, named types, socio-cultural importance, medicinal uses, food and fodder uses, seed preservation methods for of f season use, folklore surrounding jack tree, miscellaneous uses, etc., are dealt in detail and the need for on-farm conservation is stressed.
Marine Fish Calendar. 4 Cochin
The article provides details about the marine fish landing at Cochin fisheries harbour, Kerala du... more The article provides details about the marine fish landing at Cochin fisheries harbour, Kerala during the period 1981-1985. It was found that the majority of the landing was contributed by purse seine followed by trawlers, drift gill nets, boat seines, hooks and lines etc.
A Note on Baccaurea courtallensis (Muell.) Arg., (Moottipotti) A Wild Edible Fruit of Western Ghats
Indian Journal of Plant Genetic Resources, 2003
Baccaurea courtallensis (Muell.) Arg. known as Moottippotti in Kerala occurs in evergreen and sem... more Baccaurea courtallensis (Muell.) Arg. known as Moottippotti in Kerala occurs in evergreen and semi-evergreen forests at lower elevations in Western Ghats and bears edible fruits. Exploration and collection of the same in few pockets of Western Ghats and preliminary observation on populations and their fruit characters in situ indicated existence of good amount of genetic heterogeneity within the population. A preliminary attempt to establish the species outside its niche was partially successful but indicated that it may be amenable to conservation, domestication and development as a multi-purpose tree in tropics.
A knowledge on the fish fauna of the Exclusive Economic Zone of India is essential to study the d... more A knowledge on the fish fauna of the Exclusive Economic Zone of India is essential to study the distribution, zoogeography and biological aspects of the fish resources. The present check list of fishes is based on the pelagic and bottom trawl collections of FORV Sagar Sampada during her cruises 1-30, in the EEZ along both the east and west coasts of India during the years 1985-'87. This list is arranged alphabetically by families and genera. The list consists of 87 families and 242 species, including both conventional and nonconventional fish fauna of the Indian EEZ. The depth-wise distribution of the species in the latitude zones are also given.
Fluctuations in the mackerel catches at Cochin
The heavy catches of mackerel were observed during 21st and 28th September. 1982 ,at the Fisherie... more The heavy catches of mackerel were observed during 21st and 28th September. 1982 ,at the Fisheries Harbour, Cochin,by purse-seiners, and since these are quite unprecedented in the recent past, observations made on the biology of the fish and its fishery are presented. The overall size-range of the fish during the month was 153-276 mm and the modal sizes varied between 180 and 250 mm suggesting that the fishery was supported mainly by 1-year and 2-years-old individuals. A majority of fish (58%) were in spent condition followed by immature, spent-recovering and developing individuals. The 92% of the bumper catch of 21st September comprised of spent fish followed by spent-recovering individuals of 2-years-old. Size ranges and dominant modal sizes of mackerel in the purse seine catches during September were compared. The high catch rates, on some these days in September indicates that the mackerel shoals available in the inshore waters were not adequately exploited before the introducti...
Incursion of brown algae and sargassum fishesinto the Cochin backwaters
An incursion of sea weeds like brown algae and reef fishes like Sargassum fishes was observed in ... more An incursion of sea weeds like brown algae and reef fishes like Sargassum fishes was observed in the Cochin backwaters on 6-12-1991. It appears that the habitat disturbance caused by the human interference along the southern part of the west coast brought the reef fishes along with the marine algae into the backwaters being assisted by the strong northerly current prevailing during the season.
Observations on zooplankton biomass in relation to thermocline in Lakshadweep area
Based on a survey conducted in February, 1987 in the oceanic waters around Lakshadweep Islands by... more Based on a survey conducted in February, 1987 in the oceanic waters around Lakshadweep Islands by FORV Sagar Sampada, zooplankton abundance from 28 stations was correlated with the top-depth of thermocline and its intensity.
Crisis in fisheries harbour, Cochin
In the cochin fisheries harbour, controlled by cochin port trust, nearly 5,000 people are employe... more In the cochin fisheries harbour, controlled by cochin port trust, nearly 5,000 people are employed In various operations connected with the handling of fish catches from an average of 300 fishing vesselsdue to this strike by the fish merchants all the fishing boats operating from the harbour had to Suspend their fishing operations.the crew members of these purse seiners are understood to have started an agitation for getting increased share of their wages.the crew wants the original payment of the share of wages restored and are agitating for the same. In resolving such problems in the various fisheries, more concern and involvement of the state department of fisheries would be helpful.
A new record of natural stands of Psidium guineense swartz from Koliam, Kerala, India
Psidium guineense Swartz, a native of Central and South America, had been reported earlier to occ... more Psidium guineense Swartz, a native of Central and South America, had been reported earlier to occur as wild in Guwahati (Assam) and Tripura state. This is the first report of this species from Peninsular India. Detailed description, illustration and notes on ecology, adaptability and economic importance are provided.
Present status of exploitation of fish and shellfish resources: Oil sardine
Present status of exploitation of fish and shellfish resources: Oil sardine Considerable fluctuat... more Present status of exploitation of fish and shellfish resources: Oil sardine Considerable fluctuations coupled with a general decline in the oil sardine landings have been observed along the southwest coast of India during 1984-85 to 198889. The catch and effort data for oilsardine fishery during the different seasons have revealed that premonsoon period is the most productive period for the fishery. The decline in the fishery is attributed to the indiscriminate exploitation of juveniles and potential spawners by purse seiners and ring seins. T he traditional &or has k e n a diversely affected by the operations of purse seines in recent years in northern Kerala Exploitation of spawning st& of oilsardine during the b d n g from May to September is of great consequences far the conservation of the resources. Even though good m o n soon is most likely to have a positive Impact on the stock size and facilitate spawning and recruitment, the likely advantage is offset by Indiscreminate exp...
Observations on the purse-seine fishery for oil sardine at Cochin indicated that the fishery fluc... more Observations on the purse-seine fishery for oil sardine at Cochin indicated that the fishery fluctuated widely during 1980-'85. The best catch was in 1984 (17,665.90 t) and the poorest in 1985 (5,470.27 t). The highest monthly catch rate (1,181.0 kg) was in December, 1984 while the lowest (295.4 kg) in Novem ber, 1982. Range of total instantaneous mortality 'Z' was from 1.59 to 2.88, the average being 2.15. The natural mortality 'M' worked out to 0.75. The instantaneous fishing mortality 'F' has been estimated to be 1.4. The annual rate of exploitation 'a* has been estimated to be 0.5743. Average annual purseseine catch (A1) of oil sardine during these six years was 10,3361. The standing stock at Cochin for 1980'85 has been calculated at 7,383 t. The average annual stock of oil sardine at Cochin has been estimated at 17,998 t. Average annual catch of oil sardine in Kerala during the 6-year period was 1,23,519 t; the standing stock has been estima...
Evaluation of Okra Germplasm for Fruit Yield, Quality and Field Resistance to Yellow Vein Mosaic Virus
Indian Journal of Plant Genetic Resources, 2004
Field experiments were conducted with 941 indigenous and exotic germplasm of okra [Abelmoschus es... more Field experiments were conducted with 941 indigenous and exotic germplasm of okra [Abelmoschus esculentus (L.) Moench] at the Regional station of National Bureau of Plant Genetic Resources, Thrissur, Kerala from 1999–2001 to identify high yielding okra germplasm coupled with acceptable fruit quality and field resistance to yellow vein mosaic virus (YVMV). During the preliminary germplasm evaluation, 62 high yielding accessions were identified and were were subjected to further evaluation in order to confirm the stability of desired traits for which they were selected. As regard to fruit yield per plant, indigenous accession IC 265147 collected from Thrissur district of Kerala performed better than all others did. Fruit colour, pubescence, shape, thickness, mucilage content and taste of fruits were considered together for assessing fruit quality. Based on 1 to 9 point quality score chart the accessions were grouped into four quality groups viz. low, medium, good and excellent. Access...
Collection of rice germplasm from malabar, Kerala
In an exploration undertaken in northern districts of Kerala, parts of South Canara and Coorg dis... more In an exploration undertaken in northern districts of Kerala, parts of South Canara and Coorg districts of Karnataka, 104 accessions of rice comprising 60 landraces and 24 wild rice samples falling under four species were collected. Some of the very rare landraces which are at the verge of extinction, such as ‘Kurichyar’, ‘Karimpalar’, ‘Mavilan’, ‘Jathikurichyar’, ‘Wynadan chetty’, ‘Gounder’ and ‘Naikkar’ could be collected. The collection included special purpose local landraces as detailed in the text.
Field experiments were conducted involving 103 indigenous and exotic accessions of linseed germpl... more Field experiments were conducted involving 103 indigenous and exotic accessions of linseed germplasm during rabi 201112 and rabi 2012-13 at ICAR-NBPGR Regional Station, Akola with an objective to characterize the germplasm, assess the relative performance, estimate the genetic variability, heritability, genetic advance, correlation among seed and oil yields with other traits. The magnitude of variability for qualitative traits like seed coat colour, petal colour, flower shape, flower size and seed size was relatively higher than that of growth habit, lodging tendency and seed lustre. High GCV was recorded for seed yield per plant and number of capsules per plant and low GCV for days to maturity and oil content. High heritability coupled with high GA was recorded for number of capsules per plant and seed yield per plant and low heritability and GA was recorded for oil content. Significant positive correlation was recorded between seed yield with number of capsules per plant, plant he...
Biomass and Bioenergy, 2012
Variability in 35 accessions of niger (Guizotia abyssinica) was assessed for test weight and oil ... more Variability in 35 accessions of niger (Guizotia abyssinica) was assessed for test weight and oil quality parameters. Analysis of variance showed significant differences for test weight and oil parameters. The test weight varied from 260 to 440 mg. Total oil content ranged from 35.16% to 40.47%. The oleic acid ranged from 23.52 to 53.3% of the total fatty acids while linoleic acid ranged from 32.03 to 58.28%. High heritability (>90%) was recorded for all the oil parameters except for linoleic acid and test weight. The range of Manhattan distance coefficient values was 0.23e3.46 with a mean of 1.84. Cluster I included three accessions with highest linoleic acid (>53%), highest stearic acid (>8%), highest palmitic acid (>9%) and least oleic acid (<29%). These accessions were collected from Orissa state. Cluster II included two accessions with least oil content collected from Andhra Pradesh. The cluster III included 30 accessions and was divided into two sub-cluster i.e. IIIA; with low linoleic acid (<43%) and high oleic acid (>40%); and IIIB; with high linoleic acid (>44%) and low oleic acid (<37%). The cluster III contained the accessions representing Maharashtra and Madhya Pradesh. Thus, on the basis of present findings it is evident that a lot of variability exists for the oil quality parameters among the niger accessions grown in different states of the country. Hybridization between accessions of different clusters will result in creation of wide spectrum of variability in subsequent segregating generations for further use in breeding programmes.
Biomass and Bioenergy, 2012
Amongst minor oilseed crops, niger has not been given considerable importance as compared to the ... more Amongst minor oilseed crops, niger has not been given considerable importance as compared to the sunflower, safflower, linseed and sesame. A study on 35 niger genotypes was conducted to evaluate their potential in terms of oil quantity, quality and biodiesel traits. Oil quality was determined by fatty acid composition for two consecutive years and the results were compared with other minor oilseed crops. Niger oil has four major fatty acids namely palmitic, stearic, oleic and linoleic acid. Genotypes which showed consistent fatty acid profile for the 2 consecutive years were also reported. Oleic and linoleic fatty acids showed high variability ranging from 23.52 to 53.05% and 32.03e58.28%, respectively. High oleic (IC372586) and linoleic acid (IC211078, IC211080 and IC259393) containing genotypes were also identified. Total unsaturated fatty acid (81.79e85.06%) was found to be higher than total saturated fatty acid (14.94e18.21%). Based on saponification number (200.16e202.16) and Iodine value (105.69e126.7 g I 2 100 g À1) the niger oil finds its application in various industries while cetane number confirmed the use of it as biodiesel.
Molecular markers ISSR were used to assess the genetic diversity in 35 niger [Guizotia abyssinica... more Molecular markers ISSR were used to assess the genetic diversity in 35 niger [Guizotia abyssinica (L.f.) Cass.] germplasm accessions significantly differing for oil parameters. Of the 200 ISSR primers screened, 25 primers producing clear and polymorphic bands were selected. The efficiency of individual ISSR primers was also compared for the resolving power ranges (Rp; 0.16 to 7.5); number of banding patterns (Nb; 3 to 27); heterozygosity (H; 0.245 to 0.497); polymorphic information content (PIC; 0.215 to 0.374); and discrimination power (Dj; 0.138 to 0.992). The range of mean genetic similarities between accessions based on Jaccard’s similarity coefficient was significantly high (0.1 to 0.95) with a mean value of 0.40. The UPGMA clustering based on bootstrap analyses grouped the accessions into three major clusters. Although a significant genetic diversity was observed based on ISSR and biochemical markers, but only partial correlation between diversity based on these two parameters...
Journal of Environmental Biology, 2018
質的および量的形質データを用いたコアセットのインド国立遺伝子バンク開発で保存されているヒヨコマメ生殖質の特性評価【Powered by NICT】
Ethnobotany of turmeric (Curcuma longa L.)
607-614This paper deals with the ethnobotany of turmeric (Curcuma longa L.) - an ancient crop hav... more 607-614This paper deals with the ethnobotany of turmeric (Curcuma longa L.) - an ancient crop having its origin and early domestication in South Asia and ethnobotanically very important. Due to its manifold uses in cultural and social life of ethnic people of Asia with special reference to South and South East Asia, has very early domestication and evolutionary history. In India, its history begins from time immemorial, probably much prior to the great Indus valley civilization. It is grown from time immemorial in Orissa. It has been mainly used as a colouring agent, a magic substance and a substance of religious importance and medicine from ancient times. Also, several other species of the genus Curcuma are economically useful. An attempt has been made in the paper to assemble information and elucidate the historical, legendary, religious, literary and mythological aspects substantiating logically the probable origin of the crop in India. Its ethnic connections in relation to its c...
Variability and ethnobotany of jackfruit in Western Ghats of Kerala, India
Jackfruit is an important component of tree based homestead farming in humid south west India. Di... more Jackfruit is an important component of tree based homestead farming in humid south west India. Diversity for fruit characters, named types, socio-cultural importance, medicinal uses, food and fodder uses, seed preservation methods for of f season use, folklore surrounding jack tree, miscellaneous uses, etc., are dealt in detail and the need for on-farm conservation is stressed.
Marine Fish Calendar. 4 Cochin
The article provides details about the marine fish landing at Cochin fisheries harbour, Kerala du... more The article provides details about the marine fish landing at Cochin fisheries harbour, Kerala during the period 1981-1985. It was found that the majority of the landing was contributed by purse seine followed by trawlers, drift gill nets, boat seines, hooks and lines etc.
A Note on Baccaurea courtallensis (Muell.) Arg., (Moottipotti) A Wild Edible Fruit of Western Ghats
Indian Journal of Plant Genetic Resources, 2003
Baccaurea courtallensis (Muell.) Arg. known as Moottippotti in Kerala occurs in evergreen and sem... more Baccaurea courtallensis (Muell.) Arg. known as Moottippotti in Kerala occurs in evergreen and semi-evergreen forests at lower elevations in Western Ghats and bears edible fruits. Exploration and collection of the same in few pockets of Western Ghats and preliminary observation on populations and their fruit characters in situ indicated existence of good amount of genetic heterogeneity within the population. A preliminary attempt to establish the species outside its niche was partially successful but indicated that it may be amenable to conservation, domestication and development as a multi-purpose tree in tropics.
A knowledge on the fish fauna of the Exclusive Economic Zone of India is essential to study the d... more A knowledge on the fish fauna of the Exclusive Economic Zone of India is essential to study the distribution, zoogeography and biological aspects of the fish resources. The present check list of fishes is based on the pelagic and bottom trawl collections of FORV Sagar Sampada during her cruises 1-30, in the EEZ along both the east and west coasts of India during the years 1985-'87. This list is arranged alphabetically by families and genera. The list consists of 87 families and 242 species, including both conventional and nonconventional fish fauna of the Indian EEZ. The depth-wise distribution of the species in the latitude zones are also given.
Fluctuations in the mackerel catches at Cochin
The heavy catches of mackerel were observed during 21st and 28th September. 1982 ,at the Fisherie... more The heavy catches of mackerel were observed during 21st and 28th September. 1982 ,at the Fisheries Harbour, Cochin,by purse-seiners, and since these are quite unprecedented in the recent past, observations made on the biology of the fish and its fishery are presented. The overall size-range of the fish during the month was 153-276 mm and the modal sizes varied between 180 and 250 mm suggesting that the fishery was supported mainly by 1-year and 2-years-old individuals. A majority of fish (58%) were in spent condition followed by immature, spent-recovering and developing individuals. The 92% of the bumper catch of 21st September comprised of spent fish followed by spent-recovering individuals of 2-years-old. Size ranges and dominant modal sizes of mackerel in the purse seine catches during September were compared. The high catch rates, on some these days in September indicates that the mackerel shoals available in the inshore waters were not adequately exploited before the introducti...
Incursion of brown algae and sargassum fishesinto the Cochin backwaters
An incursion of sea weeds like brown algae and reef fishes like Sargassum fishes was observed in ... more An incursion of sea weeds like brown algae and reef fishes like Sargassum fishes was observed in the Cochin backwaters on 6-12-1991. It appears that the habitat disturbance caused by the human interference along the southern part of the west coast brought the reef fishes along with the marine algae into the backwaters being assisted by the strong northerly current prevailing during the season.
Observations on zooplankton biomass in relation to thermocline in Lakshadweep area
Based on a survey conducted in February, 1987 in the oceanic waters around Lakshadweep Islands by... more Based on a survey conducted in February, 1987 in the oceanic waters around Lakshadweep Islands by FORV Sagar Sampada, zooplankton abundance from 28 stations was correlated with the top-depth of thermocline and its intensity.
Crisis in fisheries harbour, Cochin
In the cochin fisheries harbour, controlled by cochin port trust, nearly 5,000 people are employe... more In the cochin fisheries harbour, controlled by cochin port trust, nearly 5,000 people are employed In various operations connected with the handling of fish catches from an average of 300 fishing vesselsdue to this strike by the fish merchants all the fishing boats operating from the harbour had to Suspend their fishing operations.the crew members of these purse seiners are understood to have started an agitation for getting increased share of their wages.the crew wants the original payment of the share of wages restored and are agitating for the same. In resolving such problems in the various fisheries, more concern and involvement of the state department of fisheries would be helpful.
A new record of natural stands of Psidium guineense swartz from Koliam, Kerala, India
Psidium guineense Swartz, a native of Central and South America, had been reported earlier to occ... more Psidium guineense Swartz, a native of Central and South America, had been reported earlier to occur as wild in Guwahati (Assam) and Tripura state. This is the first report of this species from Peninsular India. Detailed description, illustration and notes on ecology, adaptability and economic importance are provided.
Present status of exploitation of fish and shellfish resources: Oil sardine
Present status of exploitation of fish and shellfish resources: Oil sardine Considerable fluctuat... more Present status of exploitation of fish and shellfish resources: Oil sardine Considerable fluctuations coupled with a general decline in the oil sardine landings have been observed along the southwest coast of India during 1984-85 to 198889. The catch and effort data for oilsardine fishery during the different seasons have revealed that premonsoon period is the most productive period for the fishery. The decline in the fishery is attributed to the indiscriminate exploitation of juveniles and potential spawners by purse seiners and ring seins. T he traditional &or has k e n a diversely affected by the operations of purse seines in recent years in northern Kerala Exploitation of spawning st& of oilsardine during the b d n g from May to September is of great consequences far the conservation of the resources. Even though good m o n soon is most likely to have a positive Impact on the stock size and facilitate spawning and recruitment, the likely advantage is offset by Indiscreminate exp...
Observations on the purse-seine fishery for oil sardine at Cochin indicated that the fishery fluc... more Observations on the purse-seine fishery for oil sardine at Cochin indicated that the fishery fluctuated widely during 1980-'85. The best catch was in 1984 (17,665.90 t) and the poorest in 1985 (5,470.27 t). The highest monthly catch rate (1,181.0 kg) was in December, 1984 while the lowest (295.4 kg) in Novem ber, 1982. Range of total instantaneous mortality 'Z' was from 1.59 to 2.88, the average being 2.15. The natural mortality 'M' worked out to 0.75. The instantaneous fishing mortality 'F' has been estimated to be 1.4. The annual rate of exploitation 'a* has been estimated to be 0.5743. Average annual purseseine catch (A1) of oil sardine during these six years was 10,3361. The standing stock at Cochin for 1980'85 has been calculated at 7,383 t. The average annual stock of oil sardine at Cochin has been estimated at 17,998 t. Average annual catch of oil sardine in Kerala during the 6-year period was 1,23,519 t; the standing stock has been estima...
Evaluation of Okra Germplasm for Fruit Yield, Quality and Field Resistance to Yellow Vein Mosaic Virus
Indian Journal of Plant Genetic Resources, 2004
Field experiments were conducted with 941 indigenous and exotic germplasm of okra [Abelmoschus es... more Field experiments were conducted with 941 indigenous and exotic germplasm of okra [Abelmoschus esculentus (L.) Moench] at the Regional station of National Bureau of Plant Genetic Resources, Thrissur, Kerala from 1999–2001 to identify high yielding okra germplasm coupled with acceptable fruit quality and field resistance to yellow vein mosaic virus (YVMV). During the preliminary germplasm evaluation, 62 high yielding accessions were identified and were were subjected to further evaluation in order to confirm the stability of desired traits for which they were selected. As regard to fruit yield per plant, indigenous accession IC 265147 collected from Thrissur district of Kerala performed better than all others did. Fruit colour, pubescence, shape, thickness, mucilage content and taste of fruits were considered together for assessing fruit quality. Based on 1 to 9 point quality score chart the accessions were grouped into four quality groups viz. low, medium, good and excellent. Access...
Collection of rice germplasm from malabar, Kerala
In an exploration undertaken in northern districts of Kerala, parts of South Canara and Coorg dis... more In an exploration undertaken in northern districts of Kerala, parts of South Canara and Coorg districts of Karnataka, 104 accessions of rice comprising 60 landraces and 24 wild rice samples falling under four species were collected. Some of the very rare landraces which are at the verge of extinction, such as ‘Kurichyar’, ‘Karimpalar’, ‘Mavilan’, ‘Jathikurichyar’, ‘Wynadan chetty’, ‘Gounder’ and ‘Naikkar’ could be collected. The collection included special purpose local landraces as detailed in the text.