高粱A_3类型后代花粉碘染色率与田间自交结实率的关系  

The Association of Self-fruitful Rate and Rate of Pollen Stained with 1%I_2-KI of A_3 CMS Posterity in Sorghum

作　　者：赵威军[1] 仪治本[2] 梁小红[2] 李金梅[1] 程庆军[1] 

机构地区：[1]山西省农业科学院饲草遗传育种重点实验室山西省农业科学院高粱研究所,山西晋中030600 [2]中北大学,山西太原030051

出　　处：《华北农学报》2006年第6期37-40,共4页Acta Agriculturae Boreali-Sinica

基　　金：山西省科技攻关项目(021011);山西省农业科学院青年基金项目(YQN0601)

摘　　要：以高粱A3雄性不育系A3299，A32457，A3JW；相应的保持系B3299，B32457，B3JW；恢复系1174及用恢复系1174与3个A3不育系组配成3个杂交种的F1，F2群体为材料，分析高粱如类型后代花粉碘染色率与田间自交结实率之间的关系。结果表明：田间3个F1组合的套袋结实率为10％-70％，平均约为50％，与花粉染色率相当。3个组合F2可育与不育单株比约为1：1，育性分离不同于配子体模式，也不符合孟德尔分离规律。RT与R0.72和R1.0存在极显著的回归关系，与R0．25存在显著的回归关系，回归方程为RT=0．188R0．25＋0．832R0.75＋0．933R1.0，品种间存在差异。In this study, the association of self-fruitful rate and rate of pollen stained with 1% I2-KI of A3 cytoplasnile male sterility（CMS） in Sorghum was analyzed with three cytoplasmic male sterile lines and maintainer lines（ A3299/ B3299, A32457/B32457, A3JW/B3JW）, one restorer（1174） and F1 and F2 populations of three cross classifications（ A3299 × 1174, A32457 × 1174, A3 JW × 1174）. The results demonstrated that self-fruitful ratio of F1 populations of three cross classifications were 10 % -70 %.the average being 50 %, which were equivalent to the rates of pollen stained with 1% 12- KI. Ratio of fertile plants to sterile plants of F2 populations of three cross classifications were 1 ： 1, which were not coincident to law of gemetophyte segregation and Mendel＇ s law of segregation. There was the most significant liner regression between RT and Ro.75, R1.0, and significant liner regression between RT and R0.25, which regression equation was ： RT = 0. 188 R0.25 ＋ 0.832 R0.75 ＋ 0.933 R1.0, and there was difference in cross classifications.

关 键 词：高粱 CMS 花粉碘染色率 自交结实率 

分 类 号：S514[农业科学—作物学]