Genetic control of the number of days to flowering in common bean

Mendes, Marcela Pedroso; Botelho, Flávia Barbosa Silva; Ramalho, Magno Antônio Patto; Abreu, Ângela de Fátima Barbosa; Furtini, Isabela Volpi

doi:10.12702/1984-7033.v08n04a04

Cited by 10 publications

(5 citation statements)

References 4 publications

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“…Strongly associated traits are usually under the influence of the same gene or genes located close together on the chromosome and can both be selected simultaneously (Lobo, 2008). Days to flowering have been reported to be under the control of dominance and additive gene effect with the dominance effect being lower, and when present it reduces the number of days to flowering (Mendes et al, 2008). A similar correlation result (0.7) between days to flowering and days to maturity was reported in a previous study conducted by Kamfwa et al (2015).…”

Section: Discussionsupporting

confidence: 81%

Screening for yield-related agronomic traits in a panel of locally conserved common bean (Phaseolus vulgaris L.) accessions

Wanjohi¹,

Mwangi²,

Peter³

et al. 2023

J. Plant Breed. Crop Sci.

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Characterization and conservation of germplasm is a critical step toward the genetic improvement of the crop. This study assessed variation in 257 common bean genotypes which included 207 accessions obtained the National Gene Bank of Kenya, 33 accessions from Kenya Agricultural and Livestock Research Organization (KALRO), 13 landraces collected from farmers' fields and four commercial varieties for various agronomic traits. The experiments were laid out in a randomized complete block design with three replicates at Jomo Kenyatta University of Agriculture and Technology (Kenya) for four seasons between 2019 and 2020. Significant differences (P≤0.05) existed among the common bean accessions for all traits studied. Seed yield ranged from 220.6 to 4641.9 kg/ha (KNB0106) among the accessions with a mean of 1267.0 kg/ha. Significant (P ≤0.05) positive correlation was recorded for days to flowering and days to maturity (0.73), while 100-seed weight had a significantly negative correlation with the number of pods per plant (-0.66) and the number of seeds per pod (-0.65). High (>20%) broadsense heritability was recorded for 100-seed weight (89.0%), days to flowering (76.8%), and grain yield (60.5%). Nineteen accessions that combined early maturity and high-yielding traits were identified. On average, higher seed yields were recorded for large-seeded and climbing genotypes compared to smallseeded and bush types. Common bean accessions characterized can be exploited in breeding programs.

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Section: Discussionsupporting

confidence: 81%

Screening for yield-related agronomic traits in a panel of locally conserved common bean (Phaseolus vulgaris L.) accessions

Wanjohi¹,

Mwangi²,

Peter³

et al. 2023

J. Plant Breed. Crop Sci.

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“…Yet, there are no reports on the length of NDPM for these parents. There is information in the literature concerning the genetic control of NDF (Oliveira et al, 1996;Mendes et al, 2008). Overall, research indicates that there is a predominance of the additive effect, as observed in this study ( Table 2).…”

Section: Resultssupporting

confidence: 72%

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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“…Since QU-GENE simulates error variances based on the per plant broad-sense heritability, it was necessary to calculate these values based on the per plot heritability estimates reported in the literature (Atuahene-Amankwa et al 2004 ; Carneiro et al 2011 ; Carvalho et al 2013 ; Kolkman and Kelly 2002 ; Mendes et al 2008 ; Miklas et al 2001 ; Nienhuis and Singh 1988 ; Singh et al 1990 ; White and Singh 1991 ). While QU-GENE uses broad-sense heritability, narrow-sense heritability estimates were provided to QU-GENE, as only additive effects were considered among the QTL.…”

Section: Methodsmentioning

confidence: 99%

Simulations of rate of genetic gain in dry bean breeding programs

et al. 2023

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Key message A reference study for breeders aiming at maximizing genetic gain in common bean. Depending on trait heritability and genetic architecture, conventional approaches may provide an advantage over other frameworks. Abstract Dry beans (Phaseolus vulgaris L.) are a nutrient dense legume that is consumed by developed and developing nations around the world. The progress to improve this crop has been quite steady. However, with the continued rise in global populations, there are demands to expedite genetic gains. Plant breeders have been at the forefront at increasing yields in the common bean. As breeding programs are both time-consuming and resource intensive, resource allocation must be carefully considered. To assist plant breeders, computer simulations can provide useful information that may then be applied to the real world. This study evaluated multiple breeding scenarios in the common bean and involved five selection strategies, three breeding frameworks, and four different parental population sizes. In addition, the breeding scenarios were implemented in three different traits: days to flowering, white mold tolerance, and seed yield. Results from the study reflect the complexity of breeding programs, with the optimal breeding scenario varying based on trait being selected. Relative genetic gains per cycle of up to 8.69% for seed yield could be obtained under the use of the optimal breeding scenario. Principal component analyses revealed similarity between strategies, where single seed descent and the modified pedigree method would often aggregate. As well, clusters in the direction of the Hamming distance eigenvector are a good indicator of poor performance in a strategy.

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Genetic control of the number of days to flowering in common bean

Abstract: -The aim of this study was to investigate the genetic control of early flowering in common bean

Cited by 10 publications

References 4 publications

Screening for yield-related agronomic traits in a panel of locally conserved common bean (Phaseolus vulgaris L.) accessions

Screening for yield-related agronomic traits in a panel of locally conserved common bean (Phaseolus vulgaris L.) accessions

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

Simulations of rate of genetic gain in dry bean breeding programs

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