Estimation of heterosis for yield-related traits for single cross and three-way cross hybrids of oilseed rape (Brassica napus L.)

Wolko, Joanna; Dobrzycka, Agnieszka; Bocianowski, Jan; Bartkowiak-Broda, I.

doi:10.1007/s10681-019-2482-6

Cited by 32 publications

(18 citation statements)

References 41 publications

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“…There have been previous studies, which clearly demonstrate the trait specific nature of heterosis [25,56,57]. In B. napus and soybean, positive heterosis was seen for yield related traits (1000 seed weight and seed yield) but not for plant height [56,57]. van Hulten et al [58] reported that the genetic mechanisms underlying heterosis were highly trait specific and were largely dependent on the genetic background.…”

Section: Plos Onementioning

confidence: 97%

“…The highest value from the population for heterosis for plant height was 36% and 58% at the F 2 and sub selected F 3 generation respectively (Table 1). There have been previous studies, which clearly demonstrate the trait specific nature of heterosis [25,56,57]. In B. napus and soybean, positive heterosis was seen for yield related traits (1000 seed weight and seed yield) but not for plant height [56,57].…”

Section: Plos Onementioning

confidence: 98%

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Advances in lentil production through heterosis: Evaluating generations and breeding systems

et al. 2022

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Heterosis is defined as increased performance of the F1 hybrid relative to its parents. In the current study, a cohort of populations and parents were created to evaluate and understand heterosis across generations (i.e., F1 to F3) in lentil, a self-pollinated annual diploid (2n = 2× = 14) crop species. Lentil plants were evaluated for heterotic traits in terms of plant height, biomass fresh weight, seed number, yield per plant and 100 grain weight. A total of 47 selected lentil genotypes were cross hybridized to generate 72 F1 hybrids. The F1 hybrids from the top five crosses exhibited between 31%–62% heterosis for seed number with reference to the better parent. The five best performing heterotic crosses were selected with a negative control for evaluation at the subsequent F2 generation and only the tails of the distribution taken forward to be assessed in the F3 generation as a sub selection. Overall, heterosis decreases across the subsequent generations for all traits studied. However, some individual genotypes were identified at the F2 and sub-selected F3 generations with higher levels of heterosis than the best F1 mean value (hybrid mimics). The phenotypic data for the selected F2 and sub selected F3 hybrids were analysed, and the study suggested that 100 grain weight was the biggest driver of yield followed by seed number. A genetic diversity analysis of all the F1 parents failed to correlate genetic distance and divergence among parents with heterotic F1’s. Therefore, genetic distance was not a key factor to determine heterosis in lentil. The study highlights the challenges associated with different breeding systems for heterosis (i.e., F1 hybrid-based breeding systems and/or via hybrid mimics) but demonstrates the potential significant gains that could be achieved in lentil productivity.

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Section: Plos Onementioning

confidence: 97%

Section: Plos Onementioning

confidence: 98%

Advances in lentil production through heterosis: Evaluating generations and breeding systems

et al. 2022

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“…The following model was used to estimate general and specific combining ability effects of the ij th observations. [18] for some traits in Brassica napus.…”

Section: Discussionmentioning

confidence: 99%

Combining ability for agronomic and quality traits in Indian mustard

Choudhary¹,

Sharma²,

Sanadya³

et al. 2020

Int. J. Chem. Stud.

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The present study was carried out among forty-nine Indian mustard genotypes involving F1s, their parents and 2 checks developed through Line x Tester mating design and evaluated at Breeding Research Farm, MPUAT, Udaipur in Rabi-2018 in Randomized Block Design. Results revealed that contribution of General combining ability to total mean squares was higher than that of Specific combining ability for all the traits, providing that additive gene action was more important in their inheritance. The analysis of variance revealed that the mean squares due to genotypes, parents, crosses and parents v/s crosses were significant for all the traits. General combining ability mean squares for lines and testers and Specific combining ability mean squares were significant for most of the traits indicating that both additive and nonadditive gene action were involved in the inheritance of these traits. However, the contribution of General combining ability to total mean squares was higher than that of Specific combining ability for DOF, DOM, NSP, NPB, LMA, LS, SYP HI and OC traits, providing that additive gene action was more important, while non-additive gene action for resting traits. Lines PM-27 and SKM-1313 had positive General combining ability effects for seed yield per plant and negative General combining ability effects for oil content. These lines can be used as parents to create synthetic varieties or hybrids.

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“…Lint yield and fiber quality is strongly regulated by heterosis. In breeding programs, cytoplasmic male sterile (CMS) lines greatly accelerated the exploitation of heterosis in crops, such as rice (Song et al, 2021), rape (Wolko et al, 2019), wheat (Gupta et al, 2019). Since the discovery of first CMS gene T-urf13 in maize (Levings, 1976), molecular mechanisms of many CMS genes have been improved (Dewey et al, 1987;Moneger F, 1994;Song & Hedgcoth, 1994;H et al, 1995).…”

Section: Introductionmentioning

confidence: 99%

Integrated cyto-physiological and proteomic analyses reveal new insight into CMS mechanism in a novel upland cotton CMS line LD6A

Zheng

Khan

Zhou

et al. 2022

Preprint

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Cytoplasmic male sterile (CMS) system has extensively been exploited for hybrid vigor in plant breeding programs. However, its application in many crops is limited due to poor understanding of molecular mechanism of fertility restoration. Using advanced analytical approaches, we elucidated molecular pathways regulating CMS induction and fertility restoration in cotton. Reproductive structures of a novel CMS (LD6A) and its maintainer (LD6B) line were analyzed for physiological and proteomic changes during the development process. Significant differential expression of proteins, such as Abrin, malate dehydrogenase, malic enzyme, isocitrate dehydrogenase, histone acetyltransferase was observed in CMS and its maintainer line. Transmission electron micrographs of anther tapetum showed that inner ridge of CMS mitochondria was relatively indistinct than that of LD6B with narrower membranous space at tetrad stage. Further, relatively higher reactive oxygen species were accumulated in the anther of CMS than its maintainer line at pollen mother cell and tetrad stage. We suggest that abnormal sequence of mitochondrial ribosome gene rps4 and rpl10 and high expression of ribosome-inactivating protein gene Abrin in CMS line damaged mitochondrial membrane and consequently induced pollen sterility. These data provide new insight into CMS mechanism in cotton crops and a tool to develop new CMS germplasm resources.

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Estimation of heterosis for yield-related traits for single cross and three-way cross hybrids of oilseed rape (Brassica napus L.)

Cited by 32 publications

References 41 publications

Advances in lentil production through heterosis: Evaluating generations and breeding systems

Advances in lentil production through heterosis: Evaluating generations and breeding systems

Combining ability for agronomic and quality traits in Indian mustard

Integrated cyto-physiological and proteomic analyses reveal new insight into CMS mechanism in a novel upland cotton CMS line LD6A

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