| 提高低温敏感型甘蓝型油菜雄性不育三系制种杂交率的途径 |
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| 引用本文： | 张德发,冯林,李凤扬. 提高低温敏感型甘蓝型油菜雄性不育三系制种杂交率的途径[J]. 中国油料作物学报, 1997, 0(2) |
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| 作者姓名： | 张德发 冯林 李凤扬 |
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| 作者单位： | 四川省农科院作物研究所!成都，610066，四川省农科院作物研究所!成都，610066，四川省农科院作物研究所!成都，610066 |
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| 基金项目： | 四川省科委“八五”资助项目 |
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| 摘 要： | 1990～1994年，以两个低温敏感型甘蓝型油菜细胞质雄性不育系为材料，探讨了提高制种杂交率的途径。结果表明：（1）在平丘区秋播制种条件下，不育系的不育度在70％以下，平均制种杂交率为62．0％，在自然生态条件下，难以筛选到秋播制种的适宜区域。（2）采用平丘区晚直播制种途径，不育系的不育度可提高到90％以上，但制种亲本个体发育不良，综合性状差，制种产量受影响。（3）高海拔区（2600～3200m）春播制种途径，其制种杂交率达93．0％以上，两年制种产量达到607．5～1939．5kg／hm2，平均1298．3kg／hm2，超过平丘区秋制水平。
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| 关 键 词： | 甘蓝型油菜 细胞质雄性不育性 温敏性 制种 |
SOME INVESTIGATION ON THE WAY FOR RAISING CROSS-RATE IN PRODUCTING SEED OF THREE-LINE SENSETIVE TO LOWER TEMPERATURE IN B.NAPUS |
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| Zhang Defa,Feng Lin,Li Fengyang. SOME INVESTIGATION ON THE WAY FOR RAISING CROSS-RATE IN PRODUCTING SEED OF THREE-LINE SENSETIVE TO LOWER TEMPERATURE IN B.NAPUS[J]. Chinese Journal of Oil Crop Sciences, 1997, 0(2) |
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| Authors: | Zhang Defa Feng Lin Li Fengyang |
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| Abstract: | From 1990 to 1994, for studying the way how to raise cross-rate in producting seed, two CMS lines sensetive to lower temperature were used in the eXperiment. The results showed that the cross-rate in producting seed could be effectively raised to 93% and the yield in producting seed could achived to 1298kg/hm2 by the way to product seed at the place with higher elevation (1600~3200m) by spring sowing. |
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| Keywords: | Rapeseed (B. napus L.) Cytoplasmic male sterility Temperature sensetivity Producting seed |
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