The earliest maturing pigeonpea [Cajanus cajan (L.) Millspaugh] germplasm bred at ICRISAT

Srivastava, Rakesh K.; Saxena, K B

doi:10.1007/s10722-019-00743-3

Cited by 5 publications

(5 citation statements)

References 9 publications

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“…For TGS estimation, the value of the lower parent value was considered and the maximum frequency TGS (15.38%) was observed in cross IC 632961  Arka Sukomal followed by 12.2% and 3.08% in cross IC 632961  Arka Arjun and Arka Arjun  IC 632961 respectively in F 2 generation which may be due to non-additivity allelic interaction between loci or epistasis. Reports confirmed that transgressive segregation shown elevating potential premating barriers like flowering time in pigeon pea (Srivastava and Saxena, 2019). The results were in conformity with Aditya et al (2013) in soybean crosses and Kshirsagar et al (2013) in tomato who reported transgressive segregation for days to first flowering in F 3 generation.…”

Section: Days To 50% Floweringsupporting

confidence: 85%

Assessment of Transgressive Segregants for Yield and its Component Traits in French Bean (Phaseolus vulgaris L.)

Pramanik,

Kumari,

Sahu

et al. 2024

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Background: Extreme phenotypes carried on by transgressive segregation are, moreover, heritably stable in contrast to heterosis. It has been hypothesized that the development of extreme or “transgressive” traits in segregating hybrid populations assists in the adaptive divergence of hybrid taxa. The investigation on French bean was experimented to evaluate transgressive segregants generated in the F2 generation for yield and related traits. Methods: The present study on French bean was conducted during rabi 2019 to 2022 to elicit data on transgressive segregants produced for yield and related traits in F2 generation. Fertile F1 hybrids were developed from three crosses: IC 632961 × Arka Sukomal, IC 632961 × Arka Arjun and Arka Arjun × IC 63296. Heterosis was estimated for yield and related traits in these hybrids. The F2 progeny were evaluated in open field condition. Mean, standard deviation and percentage of transgressive segregants were estimated for quantitative traits under investigation. Result: Transgressive segregants were observed in all three crosses, with the highest number of transgressive segregants for yield traits found in the progeny of the cross IC 632961 × Arka Sukomal. The identification and isolation of such transgressive segregants indicate that the parents possess favourable alleles and genes governing the traits of interest, which can be consolidated into a single or a few genotypes through stringent selection. Superior and desirable transgressive segregants were observed for all sixteen yield and its component traits, except for leaf length, in the two cross combinations Arka Arjun × IC 632961 and IC 632961 × Arka Arjun. The highest percentage of transgressive segregation was observed for the number of inflorescences per plant (79.49%), followed by the number of pods per plant (78.46%) and pod yield per plant (75.61%) in the F2 generation.

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Section: Days To 50% Floweringsupporting

confidence: 85%

Assessment of Transgressive Segregants for Yield and its Component Traits in French Bean (Phaseolus vulgaris L.)

Pramanik,

Kumari,

Sahu

et al. 2024

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“…Pigeonpea is not grown commercially in California currently, but efforts are underway to breed pigeonpea with early maturity and short plant height, adapted to irrigated production conditions (Huynh and Roberts, personal communication). Pigeonpea growers need cultivars that can be planted throughout the year, possess early (130–140 d) or mid‐early maturity (150–160 d) (Saxena et al., 2019; Srivastava & Saxena, 2019), optimum plant height (<2.0 m), and determinate growth habit, which facilitates mechanical direct harvesting. Currently, the local cultivars such as ‘Cortada’ (Bosques‐Vega, Vélez‐Colón, & Acosta‐Villegas, 2000a) and ‘Guerrero’ (Bosques‐Vega, Vélez‐Colón, & Acosta‐Villegas, 2000b) are sensitive to photoperiod and, therefore, are recommended to be planted in the short‐daylength period (generally October–December) to decrease their days to harvest.…”

Section: Introductionmentioning

confidence: 99%

Registration of photoperiod insensitive pigeonpea cultivar ‘Lázaro’

Viteri

Bosques

Linares

et al. 2020

J of Plant Registrations

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Pigeonpea [Cajanus cajan (L.) Mill.] cultivar 'Lázaro' (Reg no. CV-331, PI 692612) was developed in the United States at the Isabela and Lajas Research Substations at the University of Puerto Rico in collaboration with researchers at the University of California, Riverside. Lázaro was derived from the bi-parental cross '2B-Bushy'/OP-61 and traces back to the selection of F 2 individual plants insensitive to long daylength (>12 h) and advanced by a combination of pedigree and bulk breeding methods. Lázaro is photoperiod insensitive, and its yield performance was tested in six environments with checks in Puerto Rico and under furrow and drip irrigation systems in California in 2017 and 2018. Lázaro has a determinate growth habit, initiates flowering from 69 to 94 d, reaches harvesting maturity between 130 to 149 d, and has a small beige seed (17 g per 100 seeds). Mean seed yield varied from 338 to 1,091 kg ha −1 in Puerto Rico and >3,300 kg ha −1 in California. Furthermore, Lázaro can be planted year-round compared with cultivars 'Cortada', 'Guerrero', and 'ICP 7035', which are photoperiod sensitive and thus only recommended for planting under short-daylength conditions.

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“…), for seed yield per plant (Chahota et al, 2007); peanut (Arachis hypogaea L.), for characters such as total biomass, crop index, sprout weight, root weight, mature pod weight, and grain weight per plant (Shreya et al, 2017); rice, for flowering days (Koide et al, 2019); and pigeon pea [Cajanus cajan (L.) Millsp. ], for earliness (Srivastava & Saxena, 2019). In pea, transgressive segregation was analyzed for quality characters (Ubayasena et al, 2011).…”

Section: Resultsmentioning

confidence: 99%

Transgressive segregations in two pea F2 populations and their respective F2:3 families

Cazzola

Bermejo

Cointry

2020

Pesq. agropec. bras.

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The objective of this work was to evaluate the variability present in two pea (Pisum sativum) F2 populations and their corresponding F2:3 families, as well as to determine, in both generations, the frequency of transgressive segregants in order to isolate early superior families. The study was conducted from a cross of green pea varieties (Ilca 5115 and Turf) and a cross of yellow pea varieties (Zavalla 15 and Amarilla). In both generations, morphological traits were evaluated. Phenotypic and genotypic variances, experimental error variance, genotypic and phenotypic coefficients of variation, broad-sense heritability, and transgressive segregants were determined. The green F2 population showed greater variation, whereas the yellow F2:3 families had higher average values for most traits. In the green F2:3 population, the percentage of transgressive segregants was greater or equal to 20, while, in the yellow one, no traits had a percentage greater than 20. High heritability values were obtained for most traits in both generations. Considering all traits, 45% of the transgressive segregants are found in the F2 populations and 42% of the F2 transgressive segregants in the F2:3 generation. The distribution of F2:3 families allows to select promising families according to the breeding program objectives.

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The earliest maturing pigeonpea [Cajanus cajan (L.) Millspaugh] germplasm bred at ICRISAT

Cited by 5 publications

References 9 publications

Assessment of Transgressive Segregants for Yield and its Component Traits in French Bean (Phaseolus vulgaris L.)

Assessment of Transgressive Segregants for Yield and its Component Traits in French Bean (Phaseolus vulgaris L.)

Registration of photoperiod insensitive pigeonpea cultivar ‘Lázaro’

Transgressive segregations in two pea F2 populations and their respective F2:3 families

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