A_2类型高粱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_2 CMS Posterity in Sorghum

作　　者：李金梅[1] 赵威军[1] 仪治本[2] 梁小红[2] 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：《山西农业科学》2006年第3期24-27,共4页Journal of Shanxi Agricultural Sciences

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A2雄性不育系(CMS)A2V4,A2TX622;相应的保持系B2V4,B2TX622;恢复系1383-2,晋粱5号及用恢复系与不育系组配成3个杂交种(A2TX622×晋粱5号,A2V4×1383-2,A2V4×晋粱5号)的F1,F2群体为材料,进行A2类型高粱后代花粉碘染色率与田间自交结实率之间关系的研究。结果表明:RT与R0.25,R0.75和R1.0存在极显著的回归关系,回归方程为RT=1.188×R0.25+0.906×R0.75+0.915×R1.0。品种间存在差异。A2V4×晋粱5号F2群体的回归方程为RT=-21.407×R0.25+3.966×R0.75+0.930×R1.0;A2V4×1383-2 F2群体的回归方程为RT=0.988×R0.75+0.928×R1.0;A2TX622×晋粱5号F2群体的回归方程为RT=1.247×R0.25+1.184×R0.75+0.931×R1.0。In this study we analyzed the association of self-fruitful rate and rate of pollen stained with 1% I2- KI of A2 cytoplasmic male sterilityl CMS） in Sorghum with two cytoplasmic male sterile lines and maintainer lines（A2V4/B2V4 ,A2TX622/B2TX622 ）, two restorers（ 1383 - 2 ,Jinliang 5） and F1 and F2 populations of three cross classifications（A2Tx622 × Jinliang 5, A2V4 × 1383 - 2 and A2V4 × Jinliang 5 ）. There was the most significant liner regression between RT and R0.25 ,R0.75, R1.0, which regression equation was： RT= 1. 188 × R0.25 ＋ 0. 906 × R0.75 ＋ 0. 915 × R1.0. There was difference in cross classificationso The regression equation of F2 populations of A2V4 × Jinliang 5 was： RT = - 21. 407 × R0.25 ＋ 3. 966 × R0.75 ＋ 0. 930 × R1.0. It of F2 populations of A2V4 × 1383 - 2 was： RT = 0. 988 × R0.75 ＋ 0. 928 × R1.0. And it of F2 populations of A2Tx622 × Jinliang 5 was： RT = 1. 247 × R0.25 ＋ 1. 184 × R0.75 ＋ 0. 931 × R1.0.

关 键 词：高粱 CMS A2 花粉碘染色率 自交结实率 

分 类 号：S514.032[农业科学—作物学]