Inheritance of growth habit detected by genetic linkage analysis using microsatellites in the common bean (Phaseolus vulgaris L.).

The genetic linkage map for the common bean (Phaseolus vulgaris L.) is a valuable tool for breeding programs. Breeders provide new cultivars that meet the requirements of farmers and consumers, such as seed color, seed size, maturity, and growth habit. A genetic study was conducted to examine the genetics behind certain qualitative traits. Growth habit is usually described as a recessive trait inherited by a single gene, and there is no consensus about the position of the locus. The aim of this study was to develop a new genetic linkage map using genic and genomic microsatellite markers and three morphological traits: growth habit, flower color, and pod tip shape. A mapping population consisting of 380 recombinant F10 lines was generated from IAC-UNA × CAL143. A total of 871 microsatellites were screened for polymorphisms among the parents, and a linkage map was obtained with 198 mapped microsatellites. The total map length was 1865.9 cM, and the average distance between markers was 9.4 cM. Flower color and pod tip shape were mapped and segregated at Mendelian ratios, as expected. The segregation ratio and linkage data analyses indicated that the determinacy growth habit was inherited as two independent and dominant genes, and a genetic model is proposed for this trait.

Bibliographic Details

Main Authors:	CAMPOS, T. de, OBLESSUC, P. R., SFORÇA, D. A., CARDOSO, J. M. K., BARONI, R. M., SOUSA, A. C. B. de, CARBONELL, S. A. M., CHIORATTO, A. F., GARCIA, A. A. F., RUBIANO, L. B., SOUZA, A. P. de
Other Authors:	TATIANA DE CAMPOS, CPAF-AC; Paula Rodrigues Oblessuc, IAC; Danilo Augusto Sforca, UNICAMP; Juliana Morini Kupper Cardoso, IAC; Renata Moro Baroni, IAC; Adna Cristina Barbosa de Sousa, UNICAMP; Sergio Augusto Morais Carbonell, IAC; Alisson Fernando Chioratto, IAC; Antonio Augusto Franco Garcia, ESALQ; Luciana Benchimol Rubiano, IAC; Anete Pereira de Souza, UNICAMP.
Format:	Artigo de periódico biblioteca
Language:	English eng
Published:	2011-10-05
Subjects:	Marcador microssatélite, Mapeo de cromosomas, Hábito de crecimiento, Frijoles, Fitomejoramiento, Repeticiones de microsatélite., Melhoramento genético vegetal, Feijão, Phaseolus vulgaris, Crescimento, Interação genética, Mapa, Marcador genético, Características Agronômicas., Plant breeding, Beans, Agronomic traits, Growth habit, Chromosome mapping, Microsatellite repeats.,
Online Access:	http://www.alice.cnptia.embrapa.br/alice/handle/doc/902568
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