不同种植方式对光温敏雄性不育小麦育性表达的影响  

Effect of the Different Planting Modes on the Fertility Expression in Photo-Thermo-Sensitive Male Sterile Wheat

作　　者：秦志列[1] 孙辉 张风廷 赵昌平 王志敏[1] 

机构地区：[1]中国农业大学农学与生物技术学院,北京100094 [2]北京杂交小麦工程技术研究中心,北京100097

出　　处：《安徽农业科学》2007年第24期7385-7387,共3页Journal of Anhui Agricultural Sciences

基　　金：北京市科委首都农业育种平台项目(YZPT01-08);863项目(2002AA207004);北京市自然基金项目(6042008和6992010)

摘　　要：光温敏雄性不育小麦育性的稳定表达是实现其成功利用的关键。研究了不同种植方式对2个光温敏雄性不育小麦育性表达的影响。结果表明，随播种时期的推迟、播种密度的降低、行间距的增加，自交结实率呈升高趋势。方差分析表明，播种时期对自交结实的影响最大，播种时期与播种密度、播种行间距间均存在显著的互作。年度间、株间、株内穗间、穗内小穗间、小穗内小花间均存在自交结实的差异，其中不同蘖位间自交结实粒数由多到少的顺序为主茎〉第1分蘖〉第2分蘖〉第3分蘖，第5-10小穗自交结实多于其他部位。光温敏雄性不育小麦BS366的育性可表现出由0％-70％的连续变化，而BS210的育性则在11％-42％。The effect of different planting modes on fertility expression in photo-themo-sensitive male sterile wheat was analyzed in the paper. The results showed the self-setting rate was gradually increased with the sewing time（SW） delaying,the planting density（PD） decreasing and row space（RS） increas- ing. The variance analysis indicated that the＇ sewing time had the strongest influence on fertility expression, and the SW× PD or SW × RS effect was signifi- cant（ P 〉 0.01 ）. The differences in fertility between different years, plants, tillers and florets were existent. In different tiller position, self-crossed seed fer- tility was decreased orderly： main tiller〉 first tiller〉 second tiller〉 third tiller.The grain number of seed-setting from the fifth to tenth spikes was more than other spikes. The scope of self-crossed seed-setting rate in BS366 and BS210 was 0%-70% and 11%-42 % respectively.

关 键 词：小麦 光温敏雄性不育 育性表达 种植方式 

分 类 号：S512.1[农业科学—作物学] Q343.3[生物学—遗传学]