论文部分内容阅读
利用链霉素连续4年较系统地研究了诱变冬、春小麦不同基因型雄性不育的可行性和诱变效果。试验结果表明链霉素处理小麦种子可降低田间出苗率，并诱导出程度不同的白化苗。不同小麦基因型对链霉素的敏感性不同。对链霉素的抗性和雄性不育株诱变率在不同品种间都存在较大的差异。恢复类型的品种对链霉素反应较迟钝，保持类型的品种间也存在一定的差异。500mg·L-1和1000mg·L－1的链霉素浓度处理后雄性不育株诱变率无明显差异。链霉素可在冬、春小麦不同基因型中诱导出雄性不育突变，不同年份和不同的基因型上有较好的重视性，诱变当代雄性不育诱变率可从0．13×10－3到13．07×10－3。诱变二代雄性不育诱变率在2．04×10－3左右。重复诱变可提高诱变效果。
Streptomycin for 4 consecutive years more systematic study of mutagenic winter and spring wheat genotypes of different genotypes of male infectivity and mutagenic effects. The results showed that streptomycin treatment of wheat seeds can reduce the rate of emergence in the field, and induce different levels of albino seedlings. Different wheat genotypes have different sensitivity to streptomycin. The resistance to streptomycin and the mutation rate of male sterile plants were different among different varieties. Restoration types of the reaction to streptomycin more sluggish, there are also some differences between the types of breed. There was no significant difference in mutagenicity between male sterile plants treated with 500 mg · L-1 and 1000 mg · L-1 streptomycin. Streptomycin can induce male sterility mutations in different genotypes of winter wheat and spring wheat, and has a good emphasis on different years and genotypes. The mutation rate of male sterility can be increased from 0.13 × 10 -3 to 13.07 × 10 -3. Mutagenesis The second generation of male sterile mutagenesis rate of 2.04 × 10-3 or so. Repeated mutagenesis can improve the mutagenic effect.