Heterosis and Inbreeding Depression for fruit yield and its components in Brinjal (Solanum melongena L.) (original) (raw)
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Electronic Journal of Plant Breeding, 2010
Genetical studies on fruit yield per plant and its attributing traits alongwith quality traits like total soluble solids (TSS) and rind thickness were conducted following line x tester mating design comprising of 8 lines and 6 testers at Horticulture Research Farm, Indira Gandhi Agricultural University, Raipur. The analysis revealed that all the parents were found good general combiners for most of the characters. However, line IGBO 65 and tester KS 327 were found best combiners for fruit yield per plant. The ratio of gca variance/ sca variance were observed less than unity for all the characters which revealed the predominance of non-additive gene action. The hybrid, IGBL 70 X PPL was found best on the basis of specific combining ability and heterosis for fruit yield per plant. A high magnitude of heterosis (115.84%) for fruit yield per plant over better parent was observed. There was high heterosis response in most of the hybrids which supports the role of non-additive gene effects. The heterosis in relation to combining ability for quality parameters i.e. TSS and rind thickness were also found significantly high in the respective hybrids, IGBO 40 X KS 331 and IGBR 44 X IVBL 9. Indirect selection for traits such as, plant height, fruits per plant, fruit length, fruit girth and branches per plant could be done in order to achieve higher yield through heterosis breeding in brinjal.
Exploitation of heterosis for yield and its contributing traits in brinjal (Solanum melongena L.)
International Journal of Chemical Studies, 2019
The present investigation was carried out to study genetic parameters for fifteen yield and its contributing characters in 64 (48 F1s, 12 lines and 4 testers) entries with two check varieties during Kharif 2017-18 (Y1) to 2018-19 (Y2). In Y1 heterosis over mid parent for total fruit yield per plant ranged from-55.50 to 98.18 percent and standard heterosis from-55.22 to 94.04 percent. In Y2, heterosis over mid parent for total fruit yield per plant ranged from-55.05 to 99.20 percent and standard heterosis from-58.64 to 79.09 percent. In the case of pooled analysis, heterosis over mid parent for total fruit yield per plant ranged from-55.78 to 98.65 percent and standard heterosis from-56.87 to-85.78 percent. In Y1 Out of 48 crosses, twenty-eight and twenty-two of the F1's showed significant and positive heterosis over mid parent and standard heterosis for total fruit yield per plant respectively. InY2 out of 48 crosses, twentynine and eighteen of the F1's showed significant and positive heterosis over mid parent and standard heterosis for total fruit yield per plant respectively. In pooled analysis out of 48 crosses, twenty-eight and twenty-one of the F1's showed significant and positive heterosis over mid parent and standard heterosis for total fruit yield per plant respectively.
Journal of Horticultural Sciences, 2022
Generation mean analysis of brinjal lines, GL 401 × BR 104 (CROSS I), GL 401 × W 230 (CROSS II) and W 230 × RMO 1142 (CROSS III) six generation of three crosses viz. highlighted the involvement of epistatic interactions (duplicate) for most of the qualitative traits. However, the number of fruits per plant in CROSS I & III and fruit girth, calyx length, and yield per plant in CROSS II confirmed the occurrence of complementary epistasis. Mainly, additive effect for fruit girth, non-additive effect for calyx length, calyx width, peduncle girth, fruit weight, and fruit length, and both types for peduncle length, number of fruits /cluster, number of fruits/ plant, and yield/ plant were experienced. Additive × dominance or dominance × dominance type of interactions were more prevalent than additive × additive type of interactions for different traits. Cluster bearing was monogenic dominant and green color of calyx as well as peduncle was dominant over purple with the duplicate type of epistasis. Fruit shape was digenic with incomplete dominance. Fruit color displayed digenic control in CROSS I & II and tri-genic ratio in CROSS III with incomplete dominance of purple and green pigmentations producing variable color intensity in homozygous or heterozygous conditions.
The present investigation was carried out during late kharif season of 2020-2021 to study the magnitude of heterosis, in brinjal (Solanum melongena L.). The evaluation of F 1 hybrids was done at three different locations viz., Hill Millet Research Station, Waghai (E 1), Fruit Research Station, Gandevi (E 2) and Regional Horticultural Research Station, Navsari (E 3). Line x tester mating design comprising of 7 lines, 4 testers, their resultant 28 hybrids and one standard check GNRB-1 was followed. The experiment was conducted in Randomized Complete Block Design (RBD) with three replications. Significant and positive standard heterosis for fruit yield plant-1 was obtained in all the environments. The estimates of standard heterosis varied from-24.89 (IC-110662 × GOB-1) to 28.25 per cent (NBL-117 × GOB-1) in E 1 ;-32.08 (GJB-3 × GOB-1) to 19.58 per cent (NBL-117 × Swarna Mani) in E 2 and-28.87 (IC-110662 × Swarna Mani) to 15.48 per cent (NBL-117 × Swarna Mani) in E 3. An overall view of all the top yielding crosses with respect to fruit yield contributing traits revealed that the higher fruit yield was mainly due the more number of fruits plant-1. The current study demonstrates good potential for heterosis in brinjal commercial utilization and for separating purelines from the offspring of heterotic F 1 s.
Studies on Heterosis in Brinjal (Solanum melongena L.)
International Journal of Bio-resource and Stress Management
The present investigation was conducted to find out the heterosis in brinjal. The yield and yield attributing characters, viz. days to 50% flowering, number of primary branches plant-1 , plant height, fruit length, fruit diameter, number of marketable fruits plant-1 , weight of marketable fruits plant-1 , number of unmarketable fruits plant-1 , weight of unmarketable fruits plant-1 , total number of fruits plant-1 , total yield plant-1 and total yield ha-1 were worked out through line x tester analysis involving ten lines and three testers. All the thirty hybrids with their parents were grown in RBD with three replications at Vegetable Research Centre, G.B. Pant University of Agriculture and Technology, Pantnagar during 2013-14 and 2014-15 and pooled analysis was carried out for relative heterosis, heterobeltiosis and economic heterosis. For days to 50% flowering, maximum negative relative heterosis, heterobeltiosis and economic heterosis were shown by BB85 x Pant Samrat, BRLVAR 6 x DBL02 and PB 71 x DBL02, respectively. For total number of fruits plant-1 , high magnitude of relative heterosis and heterobeltiosis were shown by Swarn Syamli x Pant Rituraj and economic heterosis was shown by the PB 66 x Pant Samrat. For total yield plant-1 , high magnitude of relative heterosis and heterobeltiosis were shown by IBWL 2001-1 x Pant Rituraj and maximum economic heterosis was shown by SMB115 x DBL02. As regards to economic heterosis, the hybrids SMB115 x DBL02, PB 66 x Pant Samrat and IBWL 2001-1 x Pant Rituraj were observed as promising hybrids for different yield characters and can be exploited as commercial hybrids.
Biological Forum – An International Journal , 2023
The present investigation was carried out by using eight diverse parents for appraisal of combing ability in brinjal. Parents were crossed in half diallel fashion to obtain 28 hybrids. Combining ability is an assessment of genotypes on the basis of their offspring performance in some definite mating design. A parent that performs well by its own performance might not always result in better hybrids when combined with another parent. So, performing combining analysis is necessary to identification of better combination of parents. Analysis of variance for combining ability revealed highly significant differences for mean square of GCA and SCA for all studied characters except days to 50 % flowering indicating that both additive and non additive gene action were important for inheritance of these characters. The ratio of σ 2 gca/σ 2 sca was lower than unity for all the traits except days to 50 % flowering indicate the pre dominant role of non additive gene action. The GCA effect showed that the parents viz., NB-20-7 and GJB 3 observed as good general combiner for fruit yield per plant while for the SCA effect, hybrids viz., NB-20-3 × NB-20-8 at Navsari (L1), NB-20-3 × GJB 3 at Waghai (L2) and NB-20-4 × NB-20-9 at Bardoli (L3) act as good specific combiner for fruit yield per plant.
Genetic variability, heritability and genetic advance studies in brinjal (Solanum melongena L
Thirteen parents along with thirty hybrids were evaluated during two successive years 2013-14 and 2014-2015 and pooled analysis was also carried out at VRC, GBPUAT Pantnagar, for twelve yield attributing characters. High phenotypic coefficient of variation (PCV) was recorded than their correspondent genotypic coefficient of variation (GCV). This was because of the reason that variability at phenotypic level includes both genotypic and environment variability. In pooled data high PCV was observed for the character number of unmarketable fruits per plant (44.07%), whereas high GCV was recorded for number of marketable fruits per plant (40.37%). High heritability coupled with high genetic advance as percent of mean was recorded for total number of fruits per plant (67.99%) indicating importance of additive gene action controlling this character.
Genetic Studies for Parental Selection among Brinjal (Solanum melongena L.) Varieties
Aims: To evaluate twenty brinjal varieties for suitable parent selection in yield aspects. Study Design: The experiment was carried out in Randomized Block Design (RBD) with three replications. Place and Duration of Study: The study was carried out at Horticulture Experiment Station, Methodology: A field experiment was conducted with twenty different brinjal varieties. The observations were recorded on thirteen quantitative and qualitative traits. The mean data were subjected to the various statistical and biometrical analyses. Results: Analysis of variance indicates that twenty diverse varieties of brinjal differed significantly for the thirteen traits. The highest estimate of phenotypic (PCV) and genotypic (GCV) coefficient of variation were recorded in case of Avg. Fruit Weight (gm) (PCV=35.71) and (GCV=34.80) followed by Avg. Yield/ Plant (kg) (PCV= 28.60) and (GCV=27.53), and Fruit Circumference (cm) (PCV =26.19) and (GCV=24.96) while Days to 50% Flowering exhibited lowest value (11.02 and 7.82). The presences of high heritability with the high genetic advance in per cent of the mean were observed for Avg. Fruit Weight (gm) (94.95 and 69.85), Avg. Yield/ Plant (kg) (92.62 and 54.58), Fruit Circumference (cm) (90.81 and 49.00), No. of Primary Branches/ Plant (90.08 and 45.77) and No. of Fruits/Plant (89.50 and 45.12). Conclusion: These findings exhibiting additive gene effect and selection for these traits is reliable for a further breeding programme. Selection of suitable parents is an important criteria for the success of crop improvement programme. Original Research Article Kasera et al.; CJAST, 31(2): 1-9, 2018; Article no.CJAST.45883 2