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Heterosis and correlation in interspecific and intraspecific hybrids of cotton

Munir, S ; Hussain, S B ; Manzoor, H ; Quereshi, M K ; Zubair, M ; Nouman, W ; Shehzad, A N ; Rasul, S ; Manzoor, S A

Genetics and molecular research, 2016-06, Vol.15 (2) [Periódico revisado por pares]

Brazil

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  • Título:
    Heterosis and correlation in interspecific and intraspecific hybrids of cotton
  • Autor: Munir, S ; Hussain, S B ; Manzoor, H ; Quereshi, M K ; Zubair, M ; Nouman, W ; Shehzad, A N ; Rasul, S ; Manzoor, S A
  • Assuntos: Cotton Fiber - standards ; Gossypium - genetics ; Hybrid Vigor ; Hybridization, Genetic ; Inbreeding ; Plant Breeding ; Quantitative Trait, Heritable ; Selective Breeding
  • É parte de: Genetics and molecular research, 2016-06, Vol.15 (2)
  • Notas: ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
    content type line 23
  • Descrição: Interspecific and intraspecific hybrids show varying degrees of heterosis for yield and yield components. Yield-component traits have complex genetic relationships with each other. To determine the relationship of yield-component traits and fiber traits with seed cotton yield, six lines (Bt. CIM-599, CIM-573, MNH-786, CIM-554, BH-167, and GIZA-7) and three test lines (MNH-886, V4, and CIM-557) were crossed in a line x tester mating design. Heterosis was observed for seed cotton yield, fiber traits, and for other yield-component traits. Heterosis in interspecific hybrids for seed cotton yield was more prominent than in intraspecific hybrids. The interspecific hybrid Giza-7 x MNH-886 had the highest heterosis (114.77), while among intraspecific hybrids, CIM-554 x CIM-557 had the highest heterosis (61.29) for seed cotton yield. A major trait contributing to seed cotton yield was bolls/plant followed by boll weight. Correlation studies revealed that bolls/plant, boll weight, lint weight/boll, lint index, seed index, lint/seed, staple length, and staple strength were significantly and positively associated with seed cotton yield. Selection based on boll weight, boll number, lint weight/boll, and lint index will be helpful for improving cotton seed yield.
  • Editor: Brazil
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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