| 抗虫棉中棉所30号种子萌发过程中生理变化的研究 |
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| 引用本文： | 丁双阳,何钟佩,段留生.抗虫棉中棉所30号种子萌发过程中生理变化的研究[J].中国农业大学学报,1998(Z4). |
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| 作者姓名： | 丁双阳 何钟佩 段留生 |
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| 作者单位： | 中国农业大学作物化学控制研究中心;中国农业大学作物化学控制研究中心 北京; |
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| 基金项目： | 博士点基金; 自然科学基金 |
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| 摘 要： | 以转 Bt 基因抗虫棉中棉所30号与其背景材料中棉所16号为材料研究了种子萌发过程的生理变化,结果表明:转 Bt 基因抗虫棉种子萌发时吸水速率慢,浸种外渗物质高,种子活力低,脂肪降解利用较慢,表现在发芽率和成苗率低、幼苗生长缓慢等。同时种子萌发过程中,转 Bt 基因抗虫棉种子和幼苗中内源激素含量及比例与常规棉差异很大,脱落酸(ABA)含量较高,赤霉素(GAs)含量较低,GAs/ABA 低,可能与种子萌发不良有关;生长素(IAA)含量降低,细胞分类索(CTKs)含量提高和 IAA/CTKs 的降低可能是抗虫棉苗期生长势弱的重要原因。
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| 关 键 词： | 转Bt基因抗虫棉 种子萌发 幼苗 内源激素 |
Physiological Differences of Bt Cotton Zhongmiansuo 30 to the Normal Cotfon During Seed Germination |
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| Ding Shuangyang He Zhongpei Duan Liusheng.Physiological Differences of Bt Cotton Zhongmiansuo 30 to the Normal Cotfon During Seed Germination[J].Journal of China Agricultural University,1998(Z4). |
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| Authors: | Ding Shuangyang He Zhongpei Duan Liusheng |
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| Institution: | Ding Shuangyang He Zhongpei Duan Liusheng (Lab.of Crop Chemical Control CAU,Beijing 100094) |
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| Abstract: | Physiological difference between Bt cotton zhongmiansuo 30 and normal cotton zhongmiansuo 16,with similar genetic backround as zhongmiansuo 30 was studied.Com- paredwith the normal cotton,water was absorbed more slowly by Bt cotton during germi- nation period,soluble matter was released more,fat was degraded and utilized slower,so the rates of germination,seedling alive and growth were all decreased.Level of endoge- nous hormones were quite different between the two varieties.Bt cotton had higher ABA, lower... |
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| Keywords: | Bt cotton germination seedling plant hormones |
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