Data/hora: 25/06/2024 05:46:09

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