芝麻雄性核不育化学保持效果初探Ⅰ.化学保持剂对核不育的育性恢复效果  

An analysis of chemical maintaining effect on genetic male sterility in sesame ( Sesamum indicum L.) Ⅰ. The restoration effect of CRA on genetic male sterility in sesame

作　　者：郑永战[1] 王文泉[1] 梅鸿献 张体德 

机构地区：[1]河南省农科院芝麻研究中心,河南郑州450002

出　　处：《中国油料作物学报》2000年第3期13-15,共3页Chinese Journal of Oil Crop Sciences

基　　金：河南省"九五"攻关课题 !(95 10 10 114 )

摘　　要：罩网隔离条件下 ,用 5种化学保持剂 ( CRA)对 2个芝麻雄性核不育材料分 3个生育阶段进行叶面喷施。结果表明 :与空白对照相比 ,雄性不育株花粉不育度从 87.7%下降到 54.8% ,花粉育性恢复率最高可达32 .9% ,平均为 2 2 .9%。不育株自交结蒴率最高达到 1 7.9% ,结实率最高达到 8.0 %。以 D4、D5 、D1 1 、D1 2 、D1 4 、D1 6 6个处理效果较好 ,其单株自交结蒴率最高达 4 1 .4 % ,结实率最高达 2 0 .7% ,不育株单株自交结实能力提高 1 .8～ 1 2 .6倍。所用 5种化学保持剂以 CRA0Two male sterile lines of sesame grown isolatedly were treated with 17 treatments (D 1～D 17 ) by 5 types of CRA at 2 concentrating levels. The results showed that the average restoration rate of pollen fertility was 22.9%, with the maximum 32.9%; that the maximum of capsule and seed rates of male sterile plants were 17.9% and 8.0%, respectively. The effects of treatments D 4、D 5、D 11 、D 12 、D 14 、D 16 were better than those of the others. The capsule and seed rates at single plant level were up to 41.4% and 20.7%. The relative seed productivity of male sterile plants treated was increased by 1.8～12.6 times compared with CK. CRA02 was the best among the 5 types of CRA used.

关 键 词：芝麻 雄性核不育 育性恢复 化学保持剂 制种 

分 类 号：S565.303.8[农业科学—作物学] S565.303.5