Genetic analysis for yield under seedling and terminal heat stress in Indian mustard

Singh, Vikrant; Bhajan, Ram; Pant, Usha

doi:10.5958/0975-928x.2017.00001.1

Cited by 5 publications

(7 citation statements)

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“…The discrepancy could be due to a combination of factors. The effects of heat and moisture stress on Brassica crops have been reported in different studies to negatively impact pod number and seed fill reducing yield (Angadi et al., 2000; Nuttal et al., 1992; Singh et al., 2014). High temperatures (>25°C), during bud and flowering stages, can result in the abortion of flowers and pods in Brassica spp.…”

Section: Resultsmentioning

confidence: 99%

Growth, yield, and yield stability of canola in the Northern Great Plains of the United States

2023

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Canola (Brassica napus L.) may diversify wheat-based cropping systems in the Northern Great Plains. However, agronomic adaptability and stability of highyielding genotypes have not been widely evaluated over the diverse environmental conditions of South Dakota (SD). A 2-year field experiment was conducted in two contrasting environments (Brookings-eastern SD and Pierre-Central SD) to evaluate genotypes (10 in 2019 and 12 in 2020) for days to 50% flower, lodging, pods plant −1 , seed yield, 1000-seed weight, and yield stability. Seed yield for all genotypes in Brookings averaged 1961 and 1740 kg ha −1 , in 2019 and 2020, respectively, whereas at Pierre, yields averaged 1470 and 858 kg ha −1 . Seed oil concentration was greater at Brookings (456 and 406 g kg −1 in 2019 and 2020, respectively) than at Pierre (356 g kg −1 in 2019). The additive main effects and multiplicative interaction model (AMMI) evaluated eight genotypes across locations and years for genotype × environment (GE) interactions and stability. Environment was the most dominant cause of variation among genotypes, explaining 67.7%, 41.4%, and 45.7%, of the variations in pods plant −1 , 1000-seed weight, and seed yield, respectively, whereas GE explained most of the remaining variation. A combination of AMMI-1 biplots and AMMI stability values found variability in genotypic response to environments for seed yield suggesting cultivar recommendations should be environment specific.

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Section: Resultsmentioning

confidence: 99%

Growth, yield, and yield stability of canola in the Northern Great Plains of the United States

2023

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“…Thus, the parents Tori-7, BARI Sarisha-6 and SAU Sarisha-3 showed the potentiality for developing early flowering hybrids. Earliness was also (Singh et al, 1996;Khan et al, 2014) and Brassica campestris (Singh et al, 2017) in the previous studies. Hybrid 2 showed the highest significant negative SCA effects (-20.70) for days to 80% maturity, whereas hybrid 5 showed the highest significant positive SCA effects (4.05) indicated that SAU Sarisha-1 and SAU Sarisha-3 could be useful for developing early maturing varieties (Table 5).…”

Section: Specific Combining Ability (Sca) Effectsmentioning

confidence: 65%

“…Consideration of per se performance in combination with the combining ability estimates usually provides a better choice of superior parents in a hybridization programme (Abro et al, 2009). GCA effects for earliness, plant height, number of branches, number of pods, length of pods, number of seeds, seed yield and 1000-seed weight were also reported in the previous studies in different Brassica species (Singh et al, 1996;Verma, 2000;Chowdhury et al, 2004;Shiva, 2011;Khan et al, 2014;Azizinia, 2016;Meena et al, 2016;Naheed et al, 2017;Singh et al, 2017).…”

Section: General Combining Ability (Gca) Effectsmentioning

confidence: 70%

“…Hybrid 2 showed the highest significant negative SCA effects (-20.70) for days to 80% maturity, whereas hybrid 5 showed the highest significant positive SCA effects (4.05) indicated that SAU Sarisha-1 and SAU Sarisha-3 could be useful for developing early maturing varieties (Table 5). Early maturity was also observed in hybrids derived from different Brassica species (Acharya and Swain, 2004;Chowdhury et al, 2004;Singh et al, 2017). Only hybrid 5 produced statistically significant negative SCA value (-5.07) for their height.…”

Section: Specific Combining Ability (Sca) Effectsmentioning

confidence: 80%

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Combining ability and gene action analysis in a half-diallel cross of Brassica rapa L.

Zeba¹,

Ali²,

Liton³

et al. 2020

J. Agric. Sci. Pract.

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Fifteen hybrids along with six parents were tested to identify good combiners through analyzing combining ability and gene action for yield and its attributes. The experiment was conducted in randomized complete block design with three replications during 2010/11 at research farm of Sher-e-Bangla Agricultural University (SAU), Dhaka. Data for days to 50% flowering and 80% maturity, plant height, number of primary and secondary branches, number of pods per plant, number of seeds per pod, pod length, seed yield and 1000-seed weight was recorded for analysis.The results showed that mean squares for parents, hybrids, parent vs hybrid were significantly different (p<0.01 or p<0.05) for most of the traits. Highly significant mean squares due to general combining ability (GCA) were found for all the traits except for length of pod, whereas highly significant mean squares due to specific combining ability (SCA) were also found for days to 50% flowering, number of secondary branches per plant, number of pods per plant, length of pod and seed yield per plant. This indicated that both additive and non-additive gene effects were important but additive gene effects were predominant for the expression of most of the measured traits. Estimates of GCA and SCA effects for yield and its attributes suggested that parent BARI Sarisha-6, BARI Sarisha-15 and Tori-7 was good combiners for different traits. Hayman’s graphical analysis indicated both over- and partial-dominance for growth and yield attributes. As dominant (non-fixable) variation was high for most of the attributes, substantial improvements of these traits may be possible by transferring complementary gene into non-epistatic high-dominance crosses or eliminating duplicate genes from high-dominance crosses. Considering GCA, SCA and per se performance BARI Sarisha-6, BARI Sarisha-15 and Tori-7 might be good parents towards an effective breeding programme.

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“…Indian mustard is widely grown under different agro-ecological conditions [ 26 ]. The seedling as well as flowering stages are the most sensitive to heat stress [ 27 ].…”

Section: Discussionmentioning

confidence: 99%

Heat-Stress-Induced Changes in Physio-Biochemical Parameters of Mustard Cultivars and Their Role in Heat Stress Tolerance at the Seedling Stage

Sakpal

Yadav

Choudhary

et al. 2023

Plants

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In the era of global warming, heat stress, particularly at the seedling stage, is a major problem that affects the production and productivity of crops such as mustard that are grown in cooler climates. Nineteen mustard cultivars were exposed to contrasting temperature regimes—20 °C, 30 °C, 40 °C and a variable range of 25–40 °C—and evaluated for changes in physiological and biochemical parameters at the seedling stage to study their role in heat-stress tolerance. Exposure to heat stress showed detrimental effects on seedling growth as revealed by reduced vigor indices, survival percentages, antioxidant activity and proline content. The cultivars were grouped into tolerant, moderately tolerant and susceptible based on the survival percentage and biochemical parameters. All the conventional and three single-zero cultivars were found to be tolerant and moderately tolerant, respectively, while double-zero cultivars were reckoned to be susceptible except for two cultivars. Significant increases in proline content and catalase and peroxidase activities were found associated with thermo-tolerant cultivars. More efficient antioxidant system activity and proline accumulation were noticed in conventional along with three single-zero (PM-21, PM-22, PM-30) and two double-zero (JC-21, JC-33) cultivars that might have provided better protection to them under heat stress than the remaining one single- and nine double-zero cultivars. Tolerant cultivars also resulted in significantly higher values of most of the yield attributing traits. Heat-stress-tolerant cultivars could easily be selected based on the survival percentage, proline and antioxidants at the seedling stage and included as efficient cultivars in breeding programs.

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Genetic analysis for yield under seedling and terminal heat stress in Indian mustard

Cited by 5 publications

References 0 publications

Growth, yield, and yield stability of canola in the Northern Great Plains of the United States

Growth, yield, and yield stability of canola in the Northern Great Plains of the United States

Combining ability and gene action analysis in a half-diallel cross of Brassica rapa L.

Heat-Stress-Induced Changes in Physio-Biochemical Parameters of Mustard Cultivars and Their Role in Heat Stress Tolerance at the Seedling Stage

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