Combining Ability Studies and the Gene Action  involved in Sunflower Lines

Hilli, Harshavardan J.; madi, ShobhaIm; Soregaon, C. D; Hilli, J. S.; Bankapur, Nishant S.

doi:10.20546/ijcmas.2020.901.250

Cited by 7 publications

(8 citation statements)

References 2 publications

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“…About 25% of crosses recorded significant sca effects for plant height, head diameter and seed yield per plant which indicate the presence of epistasis. This result conforms with the earlier reports of Chandirakala et al (2016), Nichal et al (2017) Ghaffari and Shariati, (2018), Hilli et al (2020) and Karande et al (2020). Hence, these crosses may be exploited in the sunflower breeding programme for increasing seed yield and oil yield components.…”

Section: Resultssupporting

confidence: 92%

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Combining ability analysis in sunflower (Helianthus annuus L.)

2022

EJPB

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A study was carried out to assess the combining ability of ten CMS lines with four testers using the line x tester method. Biometrical observations were taken for days to 50% flowering, plant height, head diameter, days to maturity, volume weight, hundred seed weight, seed yield /plant, oil content and oil yield/plant. Specific combing ability variance was greater than the general combining ability variance for all the characters which indicated that non-additive gene action played a major role in inheritance. The gca of parents were not in agreement with the per se performance for various traits. Hence, the selection of parents should be based on gca alone for a breeding programme. Three lines viz., COSF 12A, COSF 13A and CMS 207A, and tester IR 6 were identified as good general combiners for seed and oil yield. Among the hybrids generated using good general combiners, COSF 13A x IR 6 had the additive type of gene action for seed and oil yield per plant. In general, most of the crosses had non-significant sca for oil yield per plant and oil content which indicated the presence of an additive type of gene action. Hence, the selection of good general combiners for oil content, seed and oil yield will help to evolve high oil yielding hybrids in sunflowers.

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Section: Resultssupporting

confidence: 92%

“…Results indicated that specific combining ability variances were higher than general combining ability variances for all the traits indicating a preponderance of non-additive types of gene action for all the traits. Hence, these characters can be subjected to heterosis breeding (Khalid et al, 2018;Lakshman et al, 2019 andHilli et al, 2020).…”

Section: Resultsmentioning

confidence: 99%

Combining ability analysis in sunflower (Helianthus annuus L.)

2022

EJPB

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“…The results revealed that, among the twelve characters studied, characters viz., days to 50% owering, plant height, days to maturity and volume weight there was preponderance of additive gene action as indicated by greater than unity GCA to SCA ratio (Table 8), while remaining characters viz., head diameter, stem diameter, 100 seed weight, seed yield, hull content, seed lling percent, oil content and oil yield manifested a higher magnitude of SCA variance as compared to GCA variance. Similar to the present ndings, non-additive gene actions were documented for head diameter (cm), stem diameter (cm), 100 seed weight (g), seed yield (kg/ha), hull content (%), seed lling percent, oil content (%), and oil yield (kg/ha) by Bhoite et al (2018) and Hilli et al (2020).…”

Section: Variance Due To General and Speci C Combining Ability Effectssupporting

confidence: 89%

“…Top ranking hybrids had atleast one parent with low combining ability type of parental combinations suggesting the action of non additive gene in the inheritance of this trait. Non additive gene action for oil content and oil yield was also reported by Azad et al (2016) and Hilli et al (2020). None of the hybrids were good speci c combiners for all the characters studied.…”

Section: Speci C Combining Ability Effectssupporting

confidence: 76%

Combining Ability And Nature of Gene Effects Controlling Seed Yield And Its Component Traits In Alien Cytoplasm Based Hybrids In Sunflower (Helianthus Annuus L.)

Sharma

Shadakshari²

2021

Preprint

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The present research aimed to study gene effects for seed yield and its component traits in sunflower hybrids having diverse cytosterile sources from Helianthus annuus and H. argophyllus. Five lines and ten testers were crossed in a line x tester mating design to develop 50 F1 hybrids for genetic analysis. The analysis of variance revealed significant differences among the traits studied. Seasonal variation was found significant for all the traits except stem diameter, volume weight and seed filling percentage. The mean squares of lines and testers from crosses both determine the GCA were also significant for most of the traits which revealed the prevalence of additive variances and additive gene action. The mean squares of lines x tester interactions were also significant for all the traits considered. The significance of lines x tester interactions indicated that SCA is also important in the expression of traits and demonstrated the value of non-additive variances and dominant genes controlling the various traits. Among the diverse cytosterile lines, ARG-6-3-1-4 was identified as the best general combiner for stem diameter, volume weight, seed yield, hull content, oil content and oil yield. While, the line ARG-2-1-2 was best general combiner for days to 50 per cent flowering, head diameter, 100 seed weight and seed filling percentage. The tester M17-R was observed to be best general combiner for earliness and volume weight, while RHA 93 was the best general combiner for plant height, seed yield and oil content. The best cross combinations; MUT-2-8-3-2 x GKVK 3 was found to be good specific combiner for stem diameter, 100 seed weight, seed yield, seed filling percentage, oil content and oil yield, while ARG-6-3-1-4 x GKVK 3 was good specific combiner for days to 50% flowering, plant height and 100 seed weight.

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“…Hybrid breeding in Sunflower was started economically after the discovery of CMS by Leclercq in 1960 and restorer genes by Kinman in 1970 (Fick and Miller, 1997). and currently, hybrid breeding program is well developed (Chandirakala et al,2016;Nichal et al, 2017;Ghaffari and Shariati, 2018;Hilli et al,2020;Karande et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Association between molecular diversity and hybrid performance in sunflower (Helianthus annuus L.)

2023

EJPB

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The present study was aimed to assess the molecular genetic diversity in 14 parental lines (10 maintainers and 4 restorers) of sunflower crop using 51 SSR markers. A total of 147 alleles were produced with the range of 1-6 alleles per locus. The polymorphic information content (PIC) values ranged from 0.12(ORS1198 in LG5) to 0.74(ORS384 in LG15) with an average PIC of 0.51. A phylogenetic tree was constructed by neighbour-joining method which grouped the parents into four clusters. Among the maintainer and restorer combinations, the dissimilarity index was maximum between CMS 519B and CSFI 99 (0.67) which indicateed high divergence between them. Lower dissimilarity value was observed between RCR CMS 38B and LTRR 341 (0.40) suggested less divergence between them. Mahalanobis D 2 analysis was also carried out among the parental lines. The D 2 analysis grouped the parental lines into six clusters. Among them genotype pairs CMS104B vs RHA 1-1 and CSFI 99 vs LTRR341 had highest and lowest D 2 values respectively. Dissimilarity and D 2 values for parental combinations, mean performance, mid and better parental heterosis of 40 hybrids for yield and its component traits were subjected to simple correlation analysis. The D 2 analysis did not show any association with performance of hybrids. However, the dissimilarity values showed association with hybrid performance and heterosis for plant height and volume weight. Hence, the present study indicated that the selection of parental genotypes with high molecular diversity could result in improved performance of plant height and volume weight in sunflower hybrids. However further study is required with multi environment data sets.

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Combining Ability Studies and the Gene Action involved in Sunflower Lines

Cited by 7 publications

References 2 publications

Combining ability analysis in sunflower (Helianthus annuus L.)

Combining ability analysis in sunflower (Helianthus annuus L.)

Combining Ability And Nature of Gene Effects Controlling Seed Yield And Its Component Traits In Alien Cytoplasm Based Hybrids In Sunflower (Helianthus Annuus L.)

Association between molecular diversity and hybrid performance in sunflower (Helianthus annuus L.)

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