Data/hora: 26/09/2024 03:59:06

Biblioteca(s): 	Embrapa Meio-Norte.	
Data corrente: 	04/06/1998	
Data da última atualização: 	20/07/2010	
Autoria: 	ZHANG, X. P.; RHODES, B. B.; BAIRD, W. V.	
Título: 	Development of genic male-sterile watermelon lines with delayed-green seedling marker.	
Ano de publicação: 	1996	
Fonte/Imprenta: 	HortScience, v.31, n.1, p.123-126, 1996.	
Idioma: 	Inglês	
Conteúdo: 	Hybrid seed production can be facilitated by using male sterility coupled with a seedling marker. This research was initiated to combine the ms male sterility and dg delayed-green seedling marker into watermelon [Citrullus lanatus (Thunb.) Matsum & Nakai] lines. Male-sterile plants of the male-sterile line GI74B were crossed with plants of delayed green breeding line Pale90, which has yellow cotyledons and pale-green, newly developed, true leaves. The double-recessive recombinants, male sterile and delayed green, from the F2 population were backcrossed to the male-fertile plants of GI7AB. The pedigree method was used for selection in the progenies. The segregation ratios obtained from F2 and BC1F2 populations suggest that the male-sterile and delayed-green traits are inherited independently and that delayed green is inherited as a single recessive nuclear gene. Two male-sterile watermelon lines with delayed-green seedling marker have been developed. These lines will provide a convenient way to introduce male sterility and the delayed-green seedling marker into various genetic backgrounds. These two lines can be used for testing the efficiency of a new, hybrid, watermelon, seed production system.	
Palavras-Chave: 	Backcross; Hybrid; Seed production.	
Thesagro: 	Citrullus Lanatus; Germoplasma; Melão; Melhoramento; Produção; Semente.	
Thesaurus Nal: 	breeding; germplasm; pedigree.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Meio-Norte (CPAMN)	
Exemplares: 	CPAMN - (6117-1) - UPC - SP - -- - S 11285 -  - S 11285 - DIS