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通过对国内外引进的162个品种的田间自然发病调查和苗期接种鉴定,筛选出抗病型品种37个,中抗型21个,中感型60个,感病型44个.抗锈型品种中大多数是从国外引进且多属于矮生类型,其中少数矮生品种可直接用于生产,其余品种虽园艺性状不佳、但仍可作为蔓生菜豆育种的抗源亲本.抗病基因分析结果表明,抗锈性受一对基因控制且为显性.F_2代抗与感分离,经x~2测定完全符合3:1比例.本文对抗锈育种目标、苗期接种鉴定方法及用纯系小种作基因分析等进行了讨论.
Through the investigation of 162 natural cultivars introduced in the field and identification of seeding inoculation at home and abroad, 37 resistant cultivars, 21 medium resistant cultivars, 60 medium susceptible cultivars and 44 susceptible cultivars were screened. Most of the cultivars were introduced from abroad and mostly belong to the dwarf type. Among them, a few dwarf varieties could be directly used for the production, while the remaining cultivars could be used as breeding progeny of Hemisia faba L., although their horticultural traits were not good. The results showed that the resistance to rust was controlled by a pair of genes and dominant, and the separation of resistance and susceptibility of F2 was completely consistent with the ratio of 3: 1 by x ~ 2 assay.In this paper, Race for gene analysis were discussed.