Data/hora: 04/06/2024 01:59:27

Biblioteca(s): 	Embrapa Arroz e Feijão.	
Data corrente: 	18/01/2018	
Data da última atualização: 	18/01/2018	
Autoria: 	PONTES JUNIOR, V. A.; MELO, P. G. S.; PEREIRA, H. S.; MELO, L. C.	
Afiliação: 	V. A. PONTES JUNIOR; PATRICIA GUIMARAES SANTOS MELO, UFG; HELTON SANTOS PEREIRA, CNPAF; LEONARDO CUNHA MELO, CNPAF.	
Título: 	Genetic potential of common bean progenies obtained by different breeding methods evaluated in various environments.	
Ano de publicação: 	2016	
Fonte/Imprenta: 	Genetics and Molecular Research, v. 15, n. 3, gmr15038622, Sept. 2016.	
ISSN: 	1676-5680	
DOI: 	10.4238/gmr.15038622	
Idioma: 	Inglês	
Conteúdo: 	Grain yield is strongly influenced by the environment, has polygenic and complex inheritance, and is a key trait in the selection and recommendation of cultivars. Breeding programs should efficiently explore the genetic variability resulting from crosses by selecting the most appropriate method for breeding in segregating populations. The goal of this study was to evaluate and compare the genetic potential of common bean progenies of carioca grain for grain yield, obtained by different breeding methods and evaluated in different environments. Progenies originating from crosses between lines and CNFC 7812 and CNFC 7829 were replanted up to the F-7 generation using three breeding methods in segregating populations: population (bulk), bulk within F-2 progenies, and single-seed descent (SSD). Fifteen F-8 progenies per method, two controls (BRS Estilo and Perola), and the parents were evaluated in a 7 x 7 simple lattice design, with plots of two 4-m rows. The tests were conducted in 10 environments in four States of Brazil and in three growing seasons in 2009 and 2010. Genetic parameters including genetic variance, heritability, variance of interaction, and expected selection gain were estimated. Genetic variability among progenies and the effect of progeny-environment interactions were determined for the three methods. The breeding methods differed significantly due to the effects of sampling procedures on the progenies and due to natural selection, which mainly affected the bulk method. The SSD and bulk methods provided populations with better estimates of genetic parameters and more stable progenies that were less affected by interaction with the environment.	
Thesagro: 	Feijão; Melhoramento genético vegetal; Phaseolus vulgaris.	
Thesaurus Nal: 	Beans; Genotype-environment interaction; Natural selection; Plant breeding.	
Categoria do assunto: 	G Melhoramento Genético	
URL: 	http://ainfo.cnptia.embrapa.br/digital/bitstream/item/171339/1/CNPAF-2016-gmr-hsp.pdf	
Registro original: 	Embrapa Arroz e Feijão (CNPAF)	
Exemplares: 	CNPAF - (35138-1) - UPC - AP - DD - 2016 -  - 2016 - DIS