1B/1R与非1B/1R小麦K型雄性不育系比较研究

利用非1B/1R类型小麦雄性不育系及保持系与1B/1R类型小麦雄性不育系及保持系进行农艺性状、抗病性、光合速率及SOD活性的分析比较。结果表明,T.spelta1BS染色体导入使非1B/1R类型小麦比1B/1R类型不易产生单倍体,农艺性状中除株高具明显优势外,其他性状均不存在显著差异,两类不育系及保持系的抗病性也无明显差异;非1B/1R的K型不育系光合速率高于1B/1R类K型不育系;1B/1R和非1B/1R类型不育系的SOD活性的变化差异较小,均呈下降趋势,保持系差异较大。非1B/1R类型和1B/1R类型小麦雄性不育系花粉败育的关键时期均为二核期到三核期。

The Comparative Investigation of 1B/1R and Non-1B/1R K Type Wheat Male Sterile Lines

Two types of wheat male sterile lines,1B/1R type and non-1B/1R type,and their male maintainable lines were selected to study the agronomical characters,disease resistance,photosynthesis rate and activities of SOD in anthers.The results showed that T.spelta 1BS chromosome made the male sterile lines of Non-1B/1R type produce less haploid and higher plant height than that of 1B/1R type,and there were no significant difference on the disease resistance and agronomical characters between two types of wheat male sterile lines;The male sterile lines of Non-1B/1R type were with higher photosynthesis rate than that of 1B/1R type.There were little difference of SOD activities between two types,which were all with tendency of decrease.There was difference of SOD activities between two types of male maintainable lines.The key period of microspore abortion of two types of male sterile lines was similarly from dinucleate stage to thinucleate stage.