Generation Mean Analysis for Yield and Yield Components in Cowpea  [Vigna unguiculata (L.) Walp.]

Gupta, R.P.; Patel, S. R.; Modha, Kaushal; Wadekar, P.B.

doi:10.20546/ijcmas.2017.607.262

Cited by 8 publications

(18 citation statements)

References 14 publications

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“…The result indicated that additive (d), dominance (h) and epistatic component of genetic variance play major role in the inhetitance of this trait. Similar result was also found by Rehman et al (2009), Bhagirath et al (2013) [1] and Gupta et al (2017) [4] .…”

Section: Days To First Flowersupporting

confidence: 88%

Genetic architecture in blackgram [Vigna mungo (L). Hepper]

Vandodariya¹,

Chauhan²,

Rk³

et al. 2020

Int. J. Chem. Stud.

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Generation mean analysis study was carried out to estimate the gene action governing inheritance of yield and its components in blackgram using six parameter model. Six generations of a cross NUK-15-02 × NUK-15-09 was studied. Simple scaling test as well as joint scaling test were carried out to check the adequacy of additive-dominance model. Additive gene effect had lower magnitude than dominance gene effect in most of the characters. Additive × additive type of epistatis was found significance for days to first flower, plant height and branches per plant. Dominance × dominance gene interaction was registered significant by days to first flower, days to maturity and plant height. Hereby for the improvement of various characters studied in this cross, followed population improvement approach which takes in to account both additive and non-additive gene action.

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Section: Days To First Flowersupporting

confidence: 88%

Genetic architecture in blackgram [Vigna mungo (L). Hepper]

Vandodariya¹,

Chauhan²,

Rk³

et al. 2020

Int. J. Chem. Stud.

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“…The results of present study revealed that heterosis may occur in these mungbean crosses possibly due to the high genetic variation between male and female parental lines (all male parents are internationally introduced lines except M4-2 which is a mutant line). This result was in agreement with the findings of Gupta et al (2017) who reported that dominance and forms of epistasis depend on the selection of the parental materials to improve crop varieties.…”

Section: Resultssupporting

confidence: 93%

Genetic studies in mungbean [Vigna radiata (L.) Wilczek]

Khajudparn

Poolsawat

Tantasawat

2018

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To study the genetics of seven agronomic and physiological characters (total dry matter (TDM), number of pods per plant, seed weight per plant, 100-seed weight, number of seeds per pod, pod length and root length density) which were correlated with yield, eight crosses of mungbean were made, and the agronomic and physiological characters were evaluated in the six basic generations (P1, P2, F1, F2, BC1 and BC2) of each cross. It was found that most characters including TDM, number of pods per plant, seed weight per plant and root length density showed additive, dominance and epistatic gene effects, except for 100-seed weight, number of seeds per pod and pod length. One hundred-seed weight and number of seeds per pod possessed only additive gene effects, while pod length was controlled by both additive and dominance gene effects. The duplicate epistasis revealed the presence of a large number of non-additive gene actions controlling TDM, number of pods per plant, seed weight per plant and root length density that may hinder the improvement of these characters, and confirmed that selection of these characters in later generations would be more feasible.

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“…One of the advantages of generation mean analysis, the genetic analysis procedure used in this study, is that it provides a procedure for testing models with significant gene effects for adequacy. It has, therefore, been used extensively in the genetic analysis of several traits in cowpea [32,33], soybean [34], lentil [35], faba bean [36], wheat [37,38], and maize [39,40]. The non-significance of dominance and the three digenic epistatic gene effects for PodLNT in TVu 2280 × TVu 6642 as well as the adequacy of the additive model ('m' and 'a') clearly indicate that the trait was simply inherited in this cross.…”

Section: Discussionmentioning

confidence: 99%

“…Inadequacy of models with digenic epistatic effects for some of the traits suggests the involvement of higher order gene interactions for those traits. The involvement of epistasis for yield components in cowpea has been reported [13,14,33]. Important contribution of epistasis to traits of economic importance implies that a significant component of performance for those traits derives from gene interactions.…”

Section: Discussionmentioning

confidence: 99%

Inheritance of Pod Length and Other Yield Components in Two Cowpea and Yard-Long Bean Crosses

et al. 2021

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This study determined the gene effects involved in the inheritance of pod length and other yield-related traits and relationships among traits in crosses between two cowpea lines (TVu 2280 and TVu 2027) and a yard-long bean (TVu 6642) line with long pods. Plants of six generations (P1, P2, F1, F2, BC1P1, and BC1P2) derived from TVu 2280 × TVu 6642 and TVu 2027 × TVu 6642 were evaluated under field conditions. Data collected on 14 yield components of each cross were used for generation mean analysis. Gene effects and their magnitudes varied with the crosses; digenic epistatic gene effects were detected for 10 traits in TVu 2280 × TVu 6642 and 11 traits in TVu 2280 × TVu 6642. Only additive gene effect was significant for pod length in TVu 2280 × TVu 6642 while additive, dominant, and two of the three digenic epistatic gene effects were significant in TVu 2027 × TVu 6642. Models that incorporated only significant additive, dominant, and digenic epistasis were adequate for all 14 traits in TVu 2280 × TVu 6642 and eight of the 12 traits in TVu 2027 × TVu 6642 for which model-fitting was possible. Across segregating generation of the two crosses, pod length (PodLNT) was significantly (p < 0.001) correlated with three major yield components viz. pod weight (0.84, 0.77), number of seeds per pod (0.41, 0.30) and seed weight per pod (0.61, 0.29). Significant correlation of PodLNT with seed yield per plant was moderate and significant (p < 0.01–0.001) in the BC1P1 of the two crosses (0.31 and 0.41). An improvement in cowpea seed yield is feasible through selection for long pods in segregating generations involving crosses with yard-long bean.

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Generation Mean Analysis for Yield and Yield Components in Cowpea [Vigna unguiculata (L.) Walp.]

Cited by 8 publications

References 14 publications

Genetic architecture in blackgram [Vigna mungo (L). Hepper]

Genetic architecture in blackgram [Vigna mungo (L). Hepper]

Genetic studies in mungbean [Vigna radiata (L.) Wilczek]

Inheritance of Pod Length and Other Yield Components in Two Cowpea and Yard-Long Bean Crosses

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