Inheritance of Microspore Embryogenic Ability in Brassica napus L.

doi:10.3321/j.issn:1000-7091.2001.01.006

Abstract

Abstract: Inheritance of microspore embryogenic ability in B.napus was examined by 4×4 diallel crosses using 2 high responsive cultivars (`Topas' and `Lisandra') and 2 low and no responsive ones (`Kizakino' and `Kamikita').Most of F₁ hybrids showed that embryo yields similar to the high responsive parent and some showed embryo yields similar to the mid parent value.Diallel analyses showed that both additive and dominant effects were significant at 1% level in the genetic control of microspore embryogenic ability.Additive gene effects were predominant.High embryogenic ability was controlled by dominant nuclear genes.The broad-and narrow-sense heritabilities were 97.2% and 81.1%,respectively.From the results of segregation of embryo yields in F₂ population of`Lisandra'×`Kamikita',it is concluded that the microspore embryogenic ability was controlled by two loci with additive effects.

Key words: Brassica napus L., Microspore culture, Embryogenic ability, Inheritance, Diallel analysis

CLC Number:

S34.3

ZHANG Feng lan, TAKAHATA Yoshihito. Inheritance of Microspore Embryogenic Ability in Brassica napus L.[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2001, 16(1): 27-32. doi: 10.3321/j.issn:1000-7091.2001.01.006.

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