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棉 花 学 报 Cotton Science 2008，20(2)：137-140
Characterization of Inheritance on Fertility of a New Male-sterile Line Wnafstu of Cotton Abstract：The male sterile line, temporarily designated as Wnafstu developed by NWSUAF, was characterized through several successive backcrossing （plant to plant）using five accessions of G.hirsutum Cv.CCRI 41, Shaan 7359, Shaan 2089, Shaan 2234 and Shaan 204 as recurrent male parents, and crossed with three male-fertile lines (8046-1,8046-2 and 8046-3) with the same genetic background as Wnafstu. The progenies of Wnafstu backcrossed with five accessions were stable in male sterility with 100% plants; but the F1 population of crosses with 8046 was partially fertile with irregular segregation ratio. It inferred that the male sterility was controlled by cytoplasmic genetic factor(s).
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