Homeostasis of common bean populations with different genetic structures



Document title: Homeostasis of common bean populations with different genetic structures
Journal: CBAB. Crop breeding and applied biotechnology
Database: PERIÓDICA
System number: 000269900
ISSN: 1518-7853
Authors: 1


2
Institutions: 1Universidade Federal de Lavras, Departamento de Biologia, Lavras, Minas Gerais. Brasil
2Universidade Federal de Lavras, Departamento de Ciencias Exatas, Lavras, Minas Gerais. Brasil
Year:
Season: Jun
Volumen: 7
Number: 2
Pages: 111-116
Country: Brasil
Language: Inglés
Document type: Artículo
Approach: Experimental
English abstract Eight lines of common bean, a mixture in equal proportions (MP) and the F2 generation of the multiple hybrids (MH) between them were analyzed to verify whether they differ in homeostasis and phenotypic plasticity. The experiments were conducted in 20 environments (seasons and locations) from November 2004 to December 2005, in Alto Paranaíba and the south of Minas Gerais state. Based on the mean yield of the environments the stability was evaluated by the ecovalence values (Wi 2). To estimate the repeatability of the stability parameters the 20 environments were separated in two groups of 10, simulating 1000 possibilities. The MH and MP were the most stable. Nevertheless, high stability was also identified in some pure lines. The repeatability of mean grain yield (rk 2=0.73) was higher than Wi 2 (rk 2=0.18). The chances of success of selection for the smallest contribution to the G x E interaction are small
Disciplines: Agrociencias
Keyword: Fitotecnia,
Leguminosas,
Biotecnología,
Mejoramiento genético,
Frijol,
Phaseolus vulgaris,
Homeostasis,
Fenotipos
Keyword: Agricultural sciences,
Crop husbandry,
Legumes,
Genetic improvement,
Bean,
Phaseolus vulgaris,
Homeostasis,
Phenotypes
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