Genetic analysis of yield and quantitative traits in pigeonpea (Cajanus cajan L. Millsp.)

Ajay, B. C.; Gnanesh, Belaghihalli N.; Ganapathy, K. N.; Gowda, M. Byre; Prasad, P.S.; Veerakumar, G. N.; Venkatesha, S. C.; Fiyaz, R. Abdul; Ramya, K. T.

doi:10.1007/s10681-011-0556-1

Cited by 15 publications

(8 citation statements)

References 31 publications

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“…Selection intensity and progress in improving population performance may be greater under complementary interactions than under duplicate interactions (Ajay et al, 2012). For all the above traits with duplicate gene action rapid genetic gain could be observed under mild selection using existing variability.…”

Section: Resultsmentioning

confidence: 99%

Genetic Association Estimates Using Third and Fourth Degree Statistics in Early Segregating Generations of Cowpea

Dinesh¹,

Viswanatha²,

Lohithaswa³

et al. 2018

Int.J.Curr.Microbiol.App.Sci

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Section: Resultsmentioning

confidence: 99%

Genetic Association Estimates Using Third and Fourth Degree Statistics in Early Segregating Generations of Cowpea

Dinesh¹,

Viswanatha²,

Lohithaswa³

et al. 2018

Int.J.Curr.Microbiol.App.Sci

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“…F 5 and later decreasing in F 6 . When evaluating the parents and progenies of the F 1 , F 2 , and F 3 generations of four pigeon pea crosses, Ajay et al (2012) found high heritability values. According to these authors, the association of high h 2 b and genetic advance values is indicative of the possibility of a successful selection in later generations.…”

Section: Resultsmentioning

confidence: 95%

“…Obala et al (2018) used ANOVA to estimate broadsense heritability (h 2 b ) in pigeon pea, finding values from 0.519 for number of pods per plant to 0.999 for days to flowering, with the h 2 b of 0.519 having particular importance for grain protein content. Studying five pigeon pea generations, Ajay et al (2012) reported a high heritability and genetic advance in yield-related traits, which are indicative of the high effectiveness of the performed selection. Furthermore, Sharma et al (2019) used mixed models to evaluate pigeon pea lineages, observing a high broad-sense heritability (>70%) for most traits.…”

Section: Introductionmentioning

confidence: 99%

Heritability estimated by different methods in four generations of progenies from a pigeon pea cross

Costa

Santos

2022

Pesq. agropec. bras.

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The objective of this work was to compare different methods to estimate heritability in 30 pigeon pea families from the F3, F4, F5, and F6 generations, for nine variables. The experimental design was a randomized complete block with three replicates and 20 plants per plot. Broad-sense heritability was estimated by the analysis of variance ( A N O V A) [ h 2b-E(MS)], restricted maximum likelihood/best linear unbiased prediction (REML/BLUP) (h2b-REML), parent-offspring regression (h2PO), and standard deviation unit (h2UP). The h2b-E(MS) and h2b-REML estimates were similar for seven of the analyzed variables. For a higher genetic control and easier selection, values of h2b-E(MS) and h2b-REML >0.70 were estimated for two variables in four generations, two variables in three generations, three variables in two generations, and one variable in one generation. Values of h2UP and h2PO >0.70 were obtained for four and five variables, respectively. The estimates via regression or parent-offspring correlation showed some values outside the expected range of 0 to 1. The ANOVA [h2b-E(MS)] and REML/BLUP [h2b-REML] methods are the best to estimate pigeon pea heritability.

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“…Amaefula et al [42] reported higher dominance variance for most of the traits examined, which contradicts the results of the present study. Ajay et al [69] reported that additive variance, despite being a major factor, is not usually the best measure of the inheritance of a character. Terefore, the possibility of having a trait highly afected by a gene may still show a relatively low additive variance.…”

Section: Discussionmentioning

confidence: 99%

Hybrid Vigor and Heritability Estimates in Tomato Crosses Involving Solanum lycopersicum × S. pimpinellifolium under Cool Tropical Monsoon Climate

Ene

Abtew

Oselebe

et al. 2023

International Journal of Agronomy

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High humidity is a major constraint to increased tomato fruit production in a cool tropical monsoon climate. However, the genetic variation observed in Solanum pimpinellifolium makes it a good gene donor for breeding tomato cultivars capable of thriving under high humidity. The objective of this study was to estimate heterosis, heritability for higher yield, and to assess the adaptability of the genotypes to humid conditions. Genotypes were raised from five morphologically divergent parents, viz., wild parent (W)–“LA2093,” “CLN2498D” (D), “CLN2417H” (H), “Tima” (T), and “UC Dan INDIA” (U). The F1s were generated by biparental mating design using “LA2093” as a common pollen donor that was selfed to produce F2s and backcrossed to both parents to obtain BC1s and BC2s. The trial was laid out in a randomized complete block design with three replicates. Data were collected on selected yield-influencing traits and analyzed. “D × W” and “U × W” hybrids showed significant positive better parent heterosis for fruit weight per plant (30.4% and 35.5%) and total fruit yield (48.6% and 26.9%), respectively. The additive variance was higher than dominance variance for all the traits, including total fruit yield in all hybrids viz., “H × W,” “D × W,” “T × W,” and “U × W.” High narrow sense heritability estimate of ≥60% was observed in “D × W” and “U × W” hybrids for the majority of the floral and fruit traits including total fruit yield. This makes the improvement of “D × W” and “U × W” hybrids by direct selection advantageous. Hence, the adoption of selection for the affected traits in subsequent tomato breeding programs would enhance fruit yield and adaptability to humid environments.

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Genetic analysis of yield and quantitative traits in pigeonpea (Cajanus cajan L. Millsp.)

Cited by 15 publications

References 31 publications

Genetic Association Estimates Using Third and Fourth Degree Statistics in Early Segregating Generations of Cowpea

Genetic Association Estimates Using Third and Fourth Degree Statistics in Early Segregating Generations of Cowpea

Heritability estimated by different methods in four generations of progenies from a pigeon pea cross

Hybrid Vigor and Heritability Estimates in Tomato Crosses Involving Solanum lycopersicum × S. pimpinellifolium under Cool Tropical Monsoon Climate

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