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94．18．26中所具有的不育基因经验证来自“Probus”突变体，即mslb基因。具有mslb不育基因的4B染色作为顶端缺失，致使与正常4B染色体的S臂端体配对的百分率降低到29．5％，而对与整条正常4B染色体的配对影响不大。所有的研究表明，该缺失染色体能象其它染色体一样随配子稳定遗传给后代。缺失断点（mslb）与Rht3位点间交换率或随品种背景或随位点上的基因不同而变化，ms－Rht3／Ms－rht3间和ms—rht3／Ms－Rht3间的交换率分别为5．5％和11．6％。ms与Rht3基因连锁的建立可望在杂交小麦和轮回选择中发挥作用。
The sterile gene contained in 94.18.26 was verified from the “Probus” mutant, the mslb gene. 4B staining with the mslb infertility gene as apical deletion resulted in a 29.5% reduction in the pairing with the S arm arm of the normal 4B chromosome, with little effect on pairing with the entire normal 4B chromosome. All studies show that the missing chromosome can be passed on to the progeny as a gamete with other chromosomes. The exchange rates between mslb and Rht3 sites varied with the genotypes of the breeds or the loci. The exchange rates between ms-Rht3 / Ms-rht3 and ms-rht3 / Ms-Rht3 were 5.5% and 11.6%. The establishment of linkage between ms and Rht3 gene is expected to play a role in hybrid wheat and cyclotomic selection.