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Registro Completo
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: |
-- |
Marc: |
LEADER 01944naa a2200289 a 4500 001 1054889 005 2010-07-20 008 1996 bl --- 0-- u #d 100 1 $aZHANG, X. P. 245 $aDevelopment of genic male-sterile watermelon lines with delayed-green seedling marker. 260 $c1996 520 $aHybrid 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. 650 $abreeding 650 $agermplasm 650 $apedigree 650 $aCitrullus Lanatus 650 $aGermoplasma 650 $aMelão 650 $aMelhoramento 650 $aProdução 650 $aSemente 653 $aBackcross 653 $aHybrid 653 $aSeed production 700 1 $aRHODES, B. B. 700 1 $aBAIRD, W. V. 773 $tHortScience$gv.31, n.1, p.123-126, 1996.
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