Analysis of variance for diallel analysis

Present study was conducted with 10 parents, their 45 hybrids along with 4 checks viz., Pratap QPM Hybrid-1, Vivek QPM-9, HQPM-1 and HQPM-5 to estimate GCA and SCA of parents and crosses respectively in diallel mating design (excluding reciprocal crosses) in two environments (Kharif 2014 and Rabi 2014-15) at the Instructional farm, Rajasthan College of Agriculture, MPUAT, Udaipur. Two characters viz.

13p gaocaolon9 22-12-2020 14 2   Download

Diallel analysis was done using 60 F1s obtained from 15 lines x 4 testers in line x tester mating design. Highly significant gca and sca various were observed. Non additive genetic variances were predominant for most of the characters.

9p nguathienthan8 20-10-2020 11 1   Download

Nine diverse genotypes of bitter gourd (Momordica charantia L.) were crossed during summer season of 2015 in diallel design (excluding reciprocals).The resultant 36 hybrids along with the parents were evaluated in randomized block design with three replications during Kharif 2015 at Horticulture farm, S.K.N. College of Agriculture, Jobner. Each parents/F1 were sown in furrow maintaining 2.25m x 0.75m spacing. The analysis of variance for experimental design revealed the existence of adequate genetic variability in experimental material for all traits under study.

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Gene action for various quantitative and qualitative traits was explored in a half diallel involving seven elite inbred lines. Variance/Co-variance graphs revealed that the yield potential traits like (days to 50% pollen shed, days to 75% brown husk, plant height ear placement height, ear length, kernel rows per ear, kernel per row, test weight and grain yield,) displayed that the intercept of the regression line was negative showing over dominance type of gene action.

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The present investigation entitled “Diallel Analysis in Cowpea (Vignaunguiculata (L.) Walp.)” was conducted during kharif, 2013. The present study involves seven parents which were crossed in half diallel fashion in order to determine heterosis and combining ability. Seven parents viz., GC-3, CPD-91, HC-08-02, PGCP-1, GC-06-01, JOB-129 and CP-105, their resultant 21 crosses along with two standard checks viz., VCM-8 and Phule Pandhari were grown during Kharif 2013 in a Randomized Block Design with two replications.

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Heterosis in chilli was studied in 6 x 6 diallel fashion excluding reciprocals. Analysis of variance revealed that, significant difference among the treatments for all the characters studied.

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Combining ability effects of yield and its components in okra were studied through full diallel analysis of 66 F1 hybrids derived by crossing 12 nearly homozygous germplasm lines viz., IC- 45831, IC- 282272, IC- 43733, IC- 43750, IC- 45802, Sel – 4, Pusa Mukhmali, Parbhani Kranti, VRO- 3, Sel – 10, Pusa A-4 and SB – 8 and by using Arka Anamika as check. Out of these 12 genotypes, IC-45802, Parbhani Kranti and VRO-3 exhibited highest significant GCA effect for fruit yield per plant (g) and subsequent fruit yield per hectare (q).

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The present study was carried out for development of hybrids in ridge gourd for earliness and yield traits. Twenty eight crosses were developed through half diallel fashion. Evaluated the crosses and along with their parents in Randomized block design (RBD). Significant differences found in the analysis of variance for early and yield related traits which indicates enormous genetic variability present in the ridge gourd.

6p quenchua8 29-09-2020 14 1   Download

Eight parental lines of okra and their 28 F1 hybrids obtained from half diallel were studied to identify the good general and specific combiners for yield and quality parameters. Both general a combining ability (GCA) and specific combining ability (SCA) variances were highly significant for all the characters indicating the importance of both additive and nonadditive gene actions.

8p trinhthamhodang1213 02-06-2020 36 0   Download

A study was conducted to assess the extent of heterosis and combining ability of muskmelon in a half diallel mating design. Forty five F1 hybrids and ten inbred lines were evaluated for fourteen different characters during 2014-15 at Department of Vegetable Science, Punjab Agricultural University, Ludhiana. The analysis of variance indicated significant variability among all the genotypes for all the traits except fruit weight and acidity.

11p caygaocaolon5 27-05-2020 24 2   Download

The investigation was conducted to assess the heterosis in respect to leaf yield and its component characters through 6 x 6 diallel mating design involving thirty hybrids and six parents in FCV tobacco during kharif 2016 at ZAHRS (Zonal Agricultural and Horticultural Research Station), College of Agriculture Shivamogga.

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The present investigation on combining ability studies was undertaken in 10 x 10 diallel set, excluding reciprocals, for grain yield and its 14 component traits in pearl millet. Both general combining ability (GCA) and specific combining ability (SCA) variances were highly significant for all the characters in all the three environments.

9p trinhthamhodang5 16-05-2020 26 1   Download

The genetic basis of variation in 10 X 10 diallel, diverse lines of Brassica juncea L. was examined. The parents were crossed in all possible combinations excluding reciprocals. The performance of 45 F1 hybrids and 10 parents were evaluated for number of seeds per siliqua, 1000 seed weight, seed yield per plant and oil content. Analysis of variance showed highly significant differences for these traits. The two scaling tests i.e.

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The objective of this study was to breed muskmelon hybrids possessing higher TSS, flesh, and rind thickness, early and total yields; lower seed cavity; and resistance to fruit fly. Eight genetically diverse parents viz., Kesar, exotic collections (EC-2, EC-3, EC-4, EC-5), and indigenous collections (GP-210, GP-211, GP-141) were crossed in a diallel fashion excluding reciprocals. The resulting 28 F1's were evaluated with their parents in completely randomized block design with three replications under open field conditions.

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A 10 x 10 diallel analysis excluding reciprocals in sponge gourd (Luffa cylindrica (Roem.) L.) revealed highly significant mean squares due to genotypes for all characters except days to first picking and fruit girth. The mean square due to parents was highly significant for node to first female flower, number of primary branches per vine, ten fruit weight, fruit girth, fruit yield per vine and significant for node to first male flower.

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Combining ability analysis was carried out for earliness, fruit yield and its related traits in okra in a 6 × 6 full diallel fashion. Both general combining ability (GCA) and specific combining ability (SCA) variances are highly significant for all the characters indicating the importance of additive and non-additive gene actions. The highest significant negative GCA effect for earliness were recorded by the parents Arka Anamika, Parbhani kranti and for fruit yield per plant the best general combiner were found to be Parbhani kranti.

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The experiment comprised of twenty one maize hybrids generated from a 7 X 7 diallel cross, along with their parents and two standard check hybrids (Gujarat Maize 3 and HQPM 1). The analysis of variance revealed that all the characters studied exhibited highly significant genotypic differences. This indicated that experimental material under study had sufficient genetic diversity for different traits among females, males, hybrids and checks.

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Combining ability analysis was carried out for fruit yield and its components in okra in a 8 x 8 full diallel cross. Both general a combining ability (GCA) and specific combining ability (SCA) variances were highly significant for all the characters indicating the importance of both additive and non-additive gene actions. The proportion of variance due to GCA/SCA was found to be less than unity for all the characters except for fruit length indicating predominance of non-additive gene action in determining these traits except fruit length which is determined by additive gene action.

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Half diallel analysis of ten parents was performed to know the high heterotic crosses and their relationship in terms of general and specific combining ability (GCA & SCA) in Indian mustard.

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The combining ability for yield and spot blotch disease resistance was studied in 21 cross combinations generated by crossing the selected spot blotch resistant and susceptible parents in 7 x 7 half half diallel design. Analysis of variance for combining ability indicated that SCA variance was higher than GCA variance for all the traits under study. The GCA component was significant for all the traits studied except for the trait thousand grain weight. The SCA component was significant for all the traits except for number of productive tillers per plant and thousand grain weight.

5p trinhthamhodang4 22-03-2020 10 1   Download