Epistasis in intra- and inter-gene pool crosses of the common bean

Borel, Jerônimo Constantino; Ramalho, Magno Antônio Patto; Abreu, A. F. B.

doi:10.4238/gmr.15017573

Cited by 9 publications

(8 citation statements)

References 25 publications

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“…However, it should be noted the presence of a considerable number of epistatic interactions for vegetative growth, plant production and flowering time traits that have not been reported so far. Taken together, these epistatic interactions reinforce the hypothesis that epistasis is involved in the genetic control of agronomical traits as well as epistatic interactions are more frequent in inter-gene pool crosses than in intra-gene pool crosses of common bean (Borel et al, 2016). Thus, for example, significant genetic interactions were found for the genomic region where the FIN locus is located (Pv01) with other genomic regions on Pv02, Pv06, and Pv11 in the MA RIL population, as well as on Pv04 in the AM RIL population.…”

Section: Discussionsupporting

confidence: 71%

Major Contribution of Flowering Time and Vegetative Growth to Plant Production in Common Bean As Deduced from a Comparative Genetic Mapping

González

Yuste‐Lisbona

Saburido³

et al. 2016

Front. Plant Sci.

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Determinacy growth habit and accelerated flowering traits were selected during or after domestication in common bean. Both processes affect several presumed adaptive traits such as the rate of plant production. There is a close association between flowering initiation and vegetative growth; however, interactions among these two crucial developmental processes and their genetic bases remain unexplored. In this study, with the aim to establish the genetic relationships between these complex processes, a multi-environment quantitative trait locus (QTL) mapping approach was performed in two recombinant inbred line populations derived from inter-gene pool crosses between determinate and indeterminate genotypes. Additive and epistatic QTLs were found to regulate flowering time, vegetative growth, and rate of plant production. Moreover, the pleiotropic patterns of the identified QTLs evidenced that regions controlling time to flowering traits, directly or indirectly, are also involved in the regulation of plant production traits. Further QTL analysis highlighted one QTL, on the lower arm of the linkage group Pv01, harboring the Phvul.001G189200 gene, homologous to the Arabidopsis thaliana TERMINAL FLOWER1 (TFL1) gene, which explained up to 32% of phenotypic variation for time to flowering, 66% for vegetative growth, and 19% for rate of plant production. This finding was consistent with previous results, which have also suggested Phvul.001G189200 (PvTFL1y) as a candidate gene for determinacy locus. The information here reported can also be applied in breeding programs seeking to optimize key agronomic traits, such as time to flowering, plant height and an improved reproductive biomass, pods, and seed size, as well as yield.

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Section: Discussionsupporting

confidence: 71%

Major Contribution of Flowering Time and Vegetative Growth to Plant Production in Common Bean As Deduced from a Comparative Genetic Mapping

González

Yuste‐Lisbona

Saburido³

et al. 2016

Front. Plant Sci.

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“…Other studies have shown that populations obtained by hybridization between gene groups -when exempt from incompatibility -present equal or inferior performance in terms of grain yield compared to their parents (Bruzi, Ramalho, & Abreu, 2007;Johnson & Gepts, 2002). This finding was corroborated by Borel, Ramalho, and Abreu (2016) for grain yield and 100-seed weight. These authors emphasized the marked effect of epistasis when Andean and Mesoamerican genotypes were used.…”

Section: Resultsmentioning

confidence: 68%

Heterosis for the root distribution trait in common bean

et al. 2020

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Heterosis has been one of the most studied phenomena since genetic studies were conceived. Knowledge of this phenomenon for the root distribution trait in beans (Phaseolus vulgaris L.) can favour the development of genotypes that are more tolerant to abiotic stresses. This study aimed to verify the occurrence of heterosis for the root distribution trait in hybrid F1 populations of common bean derived from crosses within and between gene groups. Thirty-six populations (six parents and 30 hybrids) were evaluated under field conditions in the agricultural years 2016/17 and 2017/18. The root distribution was assessed with the adapted Bohm method. The genotypes responded similarly to environmental changes (absence of an interaction). However, the root distribution differed significantly between the agricultural years. Comparisons between the mean of hybrids from crosses within each gene pool and the mean of parents did not reveal heterosis. The comparisons between gene groups showed significant differences only between BRS Embaixador x IPR Uirapuru, CBS 14 x IPR Uirapuru, and BAF 53 x IPR Uirapuru and the mean of parents. The absence of heterosis in the root trait can be explained by the degree of kinship between the gene groups, as well as some epistatic interactions.

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“…They involved crossings from the Mesoamerican lines "Flor de Mayo" and "Talismã" with the Andean lines "Eriparsa", "Goiano Precoce", and "Manteigão Fosco". It is due to an incompatibility phenomenon widely studied (Shii et al, 1981;Vilarinho et al, 2004;Bruzi et al, 2007;Borel et al, 2016).…”

Section: Resultsmentioning

confidence: 99%

“…On several occasions, common bean breeders aim at increasing the variability by means of hybridization of Andean x Mesoamerican lines. On almost every occasion, it was also reported that the hybrid population performs lower than the mean of the parents, i.e., there was also a negative heterosis (Silva et al, 2004;Borel et al, 2016). The explanation for the occurrence of negative heterosis for grain yield has been studied and the information available indicates a possible effect of epistasis (Moreto et al, 2012;Borel et al, 2013;Borel et al, 2016).…”

Section: Resultsmentioning

confidence: 99%

“…On almost every occasion, it was also reported that the hybrid population performs lower than the mean of the parents, i.e., there was also a negative heterosis (Silva et al, 2004;Borel et al, 2016). The explanation for the occurrence of negative heterosis for grain yield has been studied and the information available indicates a possible effect of epistasis (Moreto et al, 2012;Borel et al, 2013;Borel et al, 2016). On the other hand, these two gene pools originate from very distinct regions and it is likely that during successive cultivation in such regions, genotypic combinations favorable to each condition may have developed.…”

Section: Resultsmentioning

confidence: 99%

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Research Article Genetic control of traits related to grain filling in the common bean

Guilherme¹,

Abreu²,

Silva³

et al. 2021

Genet. Mol. Res.

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A possible strategy to increase grain yield in common beans (Phaseolus vulgaris) is to obtain lines with earlier flowering and a longer grain filling period, associated with a higher dry matter accumulation rate. We examined the genetic control of these traits to investigate whether it is possible to select lines with earlier flowering, a longer period of grain formation, and a higher dry matter accumulation rate in the grain. We also sought to determine whether it would be feasible to use these traits as an indirect selection strategy for grain yield. Ten lines belonging to the Andean and Mesoamerican gene pool were crossed in a diallel scheme in Lavras, MG. The hybrids together with the parents were evaluated in a randomized block design in three seasons, corresponding to generations F 2 , F 3 and F 4. The variables measured were number of days to flowering (NDF), grain dry matter (GDM), grain yield (YIELD), number of days to physiological maturity (NDPM) and dry matter accumulation rate (RATE). We found that for NDF, NDPM and RATE, the general combining ability (GCA) explained most of the variation. Both GCA and the specific combining ability were important for YIELD. However, for this trait, the estimate of heterosis was significant, but negative (-27.7%), when the crosses involved the Andean x Mesoamerican lines. The estimated values of correlation between NDPM x NDF were positive (0.72 **), and negative between NDF x RATE (-0.52 **) and NDPM x RATE (-0.43*). Consequently, none ©FUNPEC-RP www.funpecrp.com.br Genetics and Molecular Research 20 (1): gmr18697 S.R. Guilherme et al. 2 of the populations presented potential for obtaining new lines with high grain yield, based on indirect selection for early flowering and traits associated with grain filling.

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Epistasis in intra- and inter-gene pool crosses of the common bean

Cited by 9 publications

References 25 publications

Major Contribution of Flowering Time and Vegetative Growth to Plant Production in Common Bean As Deduced from a Comparative Genetic Mapping

Major Contribution of Flowering Time and Vegetative Growth to Plant Production in Common Bean As Deduced from a Comparative Genetic Mapping

Heterosis for the root distribution trait in common bean

Research Article Genetic control of traits related to grain filling in the common bean

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