Data/hora: 17/06/2024 23:30:25

Biblioteca(s): 	Embrapa Soja.	
Data corrente: 	30/07/1993	
Data da última atualização: 	20/05/2009	
Autoria: 	SPECHT, J. E.; NICKELL, C. D.	
Afiliação: 	University of Nebraska at Lincoln, USA.	
Título: 	Soybean cultivar development for high-temperature, semi-arid irrigation culture.	
Ano de publicação: 	1981	
Fonte/Imprenta: 	In: CONFERENCE ON IRRIGATED SOYBEAN PRODUCTION IN ARID IN AND SEMI-ARID REGIONS, 1979, Cairo. Proceedings. Urbana-Champaign : INTSOY / University of Illinois, 1981. p.14-22. (INTSOY. Series, 20).	
Idioma: 	Inglês	
Notas: 	Ver trabalho preliminar no PC 3730.	
Conteúdo: 	Soybean breeding programs designed to develop cultivars suited to irrigation culture in regions of high temperatures and very low rainfall are similar in most respects to the soybean-improvement programs employed in temperate, rain-fed areas. The breeding procedures employed are primarily determined by the soybean breeder - considering the resources available, the nature of the genetic variance, and the genetic gain desired per year. Plant introduction and pure-line or mass selection can be used to exploit the existing natural genetic variability. Pedigree, bulk population, and single-seed descent can be used to segregate materials derived from artifical crosses of selected parents. Backcrossing can be used to improve existing cultivars. Recurrent selection inintermated populations can be employed to maximize recombination, optimize the use of greater genetic variability, and improve the efficiency of selection. Many of the breeding objectives employed for soybeans raised in a temperate, rain-fed culture are also applicable to a high-temperature, semiarid, irrigated culture. However, the unique environmental conditions present in the latter environment may require a quitedifferent ideotype in order to fully exploit the potentials of an irrigated culture. The characterization of the phenotypic features of thisideotype should be the main goal of the breeder.	
Palavras-Chave: 	EUA; Regiao semi-arida; Semi-arid region; Soybean; USA.	
Thesagro: 	Irrigação; Melhoramento; Soja.	
Thesaurus Nal: 	breeding; irrigation.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Soja (CNPSO)