摘要
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。
Both cytoplasmic and genic male sterility are useful for wheat genetics and breeding. The effects, possibility and reproducibility of Streptomycin in inducing male sterility of common wheat (Triticum aestivum L. ) were studied for 4 years at Beijing Agricultural University. The result indicated that the germination rate was seriously inhibited by the treatment of streptomycin. Many chlorophyll mutants such as albino seedling were induced by streptomycin in M1 generation. The induced male-sterile mutation rate was highly dependent on the wheat genotypes, the restorer line has shown to be less sensitive to the streptomycin than maintainer line although great difference was also existant among the maintainer lines. No significant difference was observed in using either 5OO mg .L-1 or 1000 mg ·L-1 streptomycin.The induction of male sterile mutant in wheat by streptomycin was highly reproducible in different years for the genotypes used. Male sterile mutant rates in M1 generation vary from 0. 13 ×10-3 to 13. 07 ×10-3. depending on the genotypes. Higher mutation rate could be obtained when the Ml seeds were treat ed with streptomycin succesively.
出处
《中国农业大学学报》
CAS
CSCD
北大核心
1996年第5期1-7,共7页
Journal of China Agricultural University
基金
国家自然科学基金
攀登计划资助
关键词
小麦
雄性不育
链霉素
诱变
育种
wheat Triticum aestivum
male sterility
induced mutation
streptomycin
