Genetic divergence and combined selection for traits that provide high agronomic performance in common bean lines 1

Developing common bean cultivars with upright plant architecture offers a number of advantages, e.g., easier management practices, reduced incidence of some diseases, improved grain quality due to less contact of the pods with soil and reduced losses in mechanized harvest (Ramalho et al., 1998). The...

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Bibliographic Details
Published in:Revista Ceres 2022-05, Vol.69 (3), p.274-282
Main Authors: Ribeiro, Nerinéia Dalfollo, dos Santos, Greice Godoy, Argenta, Henrique da Silva
Format: Article
Language:English
Subjects:
Agricultural production
Agronomy
Beans
Cluster analysis
Cultivars
Divergence
Experiments
Genetic diversity
Genotypes
Phaseolus vulgaris
Plant breeding
Research facilities
Research institutions
Seed coats
Seeds
Vegetables
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Summary:Developing common bean cultivars with upright plant architecture offers a number of advantages, e.g., easier management practices, reduced incidence of some diseases, improved grain quality due to less contact of the pods with soil and reduced losses in mechanized harvest (Ramalho et al., 1998). The use of cluster analysis and the selection index may generate complementary and more in-depth information about the genetic diversity of promising parents for use in breeding programs. [...]the present study was undertaken to examine the genetic diversity of common bean genotypes for 17 agronomic traits, select superior genotypes for traits that provide high agronomic performance and define promising crosses. According to the Köppen classification, the climate in the region is humid subtropical (Alvares et al., 2013). The evaluated treatments were 17 common bean genotypes, consisting of four cultivars (Pérola, Fepagro Garapiá, BRS Intrépido and Fepagro Triunfo) and 13 lines obtained by different research institutions that participated of the Value of Cultivation and Use (VCU) experiment of Common-Bean Southern-Brazilian network in the 2018 and 2019 biennial (Table 1).The evaluated genotypes have different grain types, namely, carioca (beige seed coat with brown streaks), black, cranberry (cream seed coat with red streaks) and pink, typical of the Mesoamerican and Andean gene pools.
ISSN:0034-737X
2177-3491
DOI:10.1590/0034-737X202269030004