Per se performance , components of genetic variation and correlation for seed and oil yields in linseed germplasm ( Linum usitatissimum L . ) (original) (raw)
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Methodology: A total of 100 linseed germplasm accessions and four standard checks were studied by examining 10 quantitative traits which contribute to yield and its attributing traits. And observations recorded. Results: Outcome of the study revealed that analysis of variance for 10 quantitative characters showed differences for various characters. Results from genetic variability analysis state that the highest GCV/PCV was recorded for the traits 50% flowering, secondary branches plant-1. Seven accessions such as LCK-9406, NL-126, Sumerpur Local, SJKO-8, L-103, EC-397752, R.S.-6 were recorded as having the highest oil content (%) greater than Original Research Article
The experiment was conducted using simple lattice design with two replication and the trails was totally consisted fifty six genotypes. Data on seed yield and other Agronomic traits were used to estimate the genetic variability parameters, heritability and genetic advance (GA). Analysis of variance revealed highly significant and significant difference for all studied traits. Evaluated characters were exhibited different levels of variability, heritability and genetic advance among the studied genotypes. Low to high phenotypic coefficient of variation (PCV) and genotypic coefficient of variation (GCV) were recorded. The highest GCV and PVC values were found particularly for lodging percent (76.65% and 90.63%), harvest index (42.26% and 47.92%) yield per hectare (41.23% and 48.19%) and number of capsule per branch (30.81% and 37.25%) respectively, whereas low GCV and PCV (8.27% and 9.73% respectively) manifested for days to maturate. The highest broad sense heritability value manifested for harvest index (77.78%) followed by seed yield per hectare (73.21%), while lowest heritability (3.78%) revealed only for seed per capsule. In present study low to moderate genetic advance were manifested and high heritability and genetic advance as percentage of mean (>50) was recorded for lodging percentage, number of capsule per branch, seed yield per hectare and harvest index, indicating predominance of additive gene action for these characters. Therefore the result of this study suggests existence of variability for seed yield and other agronomic traits in these linseed genotypes, which should be exploited in future breeding.
Genetic Variability in Bold Seeded genotypes of Linseed (Linum usitatissimum L.)
International Journal of Current Microbiology and Applied Sciences
The recent experiment with the title “Genetic variability in bold seeded linseed (Linum usitatissimum L.) was conducted in “Research cum instructional farm, Department of Genetics and Plant Breeding, College of Agriculture, IGKV, Raipur, C.G.” during rabi season 2021-2022, we used total 40 bold seeded (> 6.5 gm of 1000 seed weight) linseed genotypes including 5 checks (RLC-133, RLC-138, RLC-143, RLC-148 & RLC- 153), we used Randomized complete block design with three replications for sowing the seed in field and observations were recorded for different agro morphological traits, listed on linseed descriptors Kanpur (2010) are “days to commencement of flowering, plant height(cm), days to 50 % flowering, days to maturity, number of primary branches per plant, number of secondary branches per plant, total number of branches per plant, number of capsules per plant, number of seeds per plant, 1000 seed weight (g), oil content (%), harvest index (%), and seed yield per plant (g).” All ...
Genetic diversity in indigenous and exotic linseed germplasm (Linum usitatissimum L.)
Electronic Journal of Plant Breeding, 2015
Field experiments were conducted involving 103 indigenous and exotic accessions of linseed germplasm during Rabi 2011–12 and Rabi 2012–13 at ICAR-NBPGR Regional Station, Akola to assess the extent of genetic diversity in the germplasm based on seven quantitative traits. Using Mahalonobis’ D2 distance, the germplasm were grouped into 12 clusters. Cluster I was the largest with 23 accessions, cluster XII was smaller with two accessions and clusters V, VI, VIII, X and XI were the smallest with one accession in each. The contribution of seed oil content and 1000 seed weight towards genetic divergence were higher. The inter-cluster distance was the farthest between cluster IX and cluster XII and cluster VIII and XII. Hybridization between IC 567363 in cluster VIII versus EC 541215 and EC 541218 in cluster XII and EC 541198, IC 397953, IC 267673 in cluster IX versus EC 541215 and EC 541218 in cluster XII is suggested to obtain desirable progenies.
Morphological and molecular characterization of germplasm is important for the sustainable exploitation of crops. Linseed or flax (Linum usitatissimum) is a multipurpose crop grown in many environments for food, feed, fibre and industry. In Ethiopia, a centre of diversity for linseed, it is valued for food and export. Here, we aimed to develop and use a set of morphological descriptors to determine levels and patterns of diversity in Ethiopian germplasm from the tropical highlands (3–15°N, [ 2,000 m a.s.l.) in 198 Ethiopian traditional varieties. The Ethiopian traditional varieties included plants with both fibre and oilseed stem-branching morphotypes, although most were relatively small-seeded. Traditional variety oil quality was assessed; oil content was as low as 30 % compared to 47 % reported elsewhere. Days-to-flowering and days-to-maturity varied widely and were highly heritable. Ethiopian linseed had dominant and recessive yellow seed genotypes; some had a recessive conjoined or conjoined-seed character. The descriptors developed here will be useful for genetic mapping and selection of breeding lines. The results show the range of characters which can be exploited in breeding lines appropriate for smallholder and commercial farmers in Ethiopia, producing a sustainable, secure, high-value crop meeting agricultural, economic and cultural needs.
Genetic studies of yield and yield component of Linseed (Linumu sitatissimum L.)
Journal of Pharmacognosy and Phytochemistry, 2017
The phenotypic and genotypic variances, correlation and path coefficient, heritability and genetic advances were estimated for grain yield and yield traits in fourteen genotypes of linseed at Zonal Research Station (Birsa Agricultural University), Chianki during Rabi 2012-13. Phenotypic variance was greater than genotypic variance that indicates influence of environment on the traits studied. Heritability estimate values ranged from 0.36% for plant height to 0.97% for days maturity. High heritability estimates indicated that improvement may be made through selection. Genetic advance as percent of mean was recorded highest for seed yield per plant (86.76) followed by biological yield (57.67) and number of capsules per plant. High heritability coupled with high genetic advance as per cent of mean (>20%) was observed with seven yield components. Grain yield (g/plant) had significant and positive association with number of branches per plant, number of capsule per plant, 1000-seed we...
In the present study, the estimates of the parameters of variability viz., phenotypic coef-ficient of variation, genotypic coefficients of variation, heritability in broad sense (h 2), expected genetic advance expressed as percentage of mean and mean performance of various quantitative traits of linseed were studied. The analysis of variance revealed highly significant differences among the treatments for all traits. The magnitude of phenotypic coefficient of variation (PCV) was higher than genotypic coefficient of vari-ation for (GCV) all the characters. The high percentage of PCV was observed in grain yield/plant (67.96%) followed by biological yield /plant (54.11%), harvest index (53.90%), capsules/plant (50.42%), secondary branches (37.49%), primary branches (30.16%), grain yield/plot (25.40%) whereas, the GCV percentage was high in grain yield/plant (64.10%) followed by harvest index (52.75%), biological yield/plant (50.94%), capsules/plant (45.47%), secondary branches/plant (3...
Genetic variability, mean performance and analysis of variance in Linseed (Linum usitatissimum L.)
International Journal of Agricultural Invention, 2019
The most promising lines showing highest seed yield with high mean performance for other yield contributing characters were identified as EC-22672, NDLS-164, NDLS-169 and NDLS-205-03-02. The genotypes exhibiting highest mean performance for different characters such as EC-22672 for seed yield per plant, SLS-50, NDL-204, Meera and NDLS-204 for early days to 50% flowering, NDLS-181 for early days to maturity, EC- 41494 for plant height, NDLS-77 for primary branches per plant, NDLS-169 for secondary branches per plant, EC-41404 for number of capsules per plant, EC-41494 for number of seeds per capsule, Shekhar for biological yield, EC-23269 for harvest index and SLS-48 for test weight.
2021
The flax (Linum usitatissimum L.) is a diploid (2n = 30) autogamous (primarily self-pollinating) and an annual crop plant also called common flax or linseed. Linseed is an important oilseed crop, which belongs to the family Linaceae and order Geraniale having 14 genera and over 200 species. Almost all the species are annual herbs and some are shrubs. Linumu sitatissimum L. is the only species of the family Linaceae with non-dehiscent or semi-dehiscent capsules suitable for modern cultivation. The genetic diversity was investigated in 5 linseed lines which were collected from Oilseed Research Station, Latur. Six RAPD primers were utilized for genetic diversity analysis. In physiochemical characterization seed dimensions and biochemical properties of linseed viz. moisture, ash etc were estimated. The dendrogram produced from linseed genotypes show two main clusters. The first cluster consists of NL-356, RLC-156, Padmini, LCK-1625. The second cluster consists of sample LCK2627.These tw...
Relationship among phenotypic and quality traits in indigenous and exotic accessions of linseed
Pesquisa Agropecuária Brasileira, 2016
The objective of this work was to evaluate the relationship among phenotypic and quality traits in a set of indigenous and exotic accessions of linseed (Linum usitatissimum). The experimental material consisted of 151 accessions of linseed belonging to landraces and cultivars collected from diverse agroecological zones. Five randomly chosen plants of each accession in each replicate were tagged, and data were recorded for the 12 following agronomic traits: days to flowering, days to maturity, plant weight, plant height, tillers per plant, secondary branches per plant, capsules per plant, seeds per capsule, 1,000 seed weight, harvest index, seed yield per plant, and oil content. Capsules per plant, harvest index, and plant weight played a direct and indirect major role on seed yield. High heritability, coupled with high genetic advance for plant weight, secondary branches per plant, capsules per plant, and seed yield per plant, suggests that selection based on these traits can be effective. Regarding per se performance, the following accessions can be exploited for commercial cultivation: Shweta (5.41 g), Gaurav (5.07 g), and EX-3-3 (4.77 g) for seed yield; and Shubhra (45.09%), Mukta (44.94%), Laxmi-27 (45.06%), and Shweta (44.25%) for oil content. The chemical profiling of fatty acids obtained in the present study can provide a platform for the selection of accessions for the genetic improvement of linseed.