| 水稻突变体B1-24的细胞学观察及其激素响应 |
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| 引用本文： | 罗盛伟,李华贵,李德红.水稻突变体B1-24的细胞学观察及其激素响应[J].华南师范大学学报(自然科学版),2012,44(2):111-114. |
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| 作者姓名： | 罗盛伟 李华贵 李德红 |
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| 作者单位： | 华南师范大学生命科学学院,广东广州,510631 |
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| 基金项目： | 教育部留学回国人员科研启动基金 |
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| 摘 要： | 以半矮化水稻突变体B1-24及其野生型惠阳珍珠早(Hyz)幼苗为材料,探究其细胞学特征及其对激素的响应.在光下生长的B1-24幼苗比Hyz矮14.62%,第一真叶长度短11.18%,黄化苗植株的中胚轴长度增长41.89%.B1-24黄化苗的胚芽鞘细胞长度仅为Hyz的45.95%,而中胚轴细胞长度是其118.28%.B1-24分别经激素GA3(600μg/mL)和IAA(7μg/mL)处理,其细胞长度显著增长,50μg/mL PAC处理使其严重缩短.推测B1-24的半矮化突变可能与激素合成或响应有关.
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| 关 键 词： | 水稻 半矮化突变 细胞学 激素 |
Study on the Cytology of Rice Mutant B1-24 and Its Responses to Phytohormones |
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| LUO Shengwei
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LI Huagui
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LI Dehong.Study on the Cytology of Rice Mutant B1-24 and Its Responses to Phytohormones[J].Journal of South China Normal University(Natural Science Edition),2012,44(2):111-114. |
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| Authors: | LUO Shengwei LI Huagui LI Dehong |
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| Institution: | (School of Life Science,South China Normal University,Guangzhou 510631,China) |
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| Abstract: | We investigated the cytological characteristics and hormone responses of semi-dwarf rice mutant B1-24 by comparing to the wild type Huiyangzhenzhuzao(Hyz).Compared with Hyz,the height of B1-24 seedlings grown in light was 14.62% shorter and the length of the first leaves was 11.18% shorter;while the mesocotyl length of B1-24 was 41.89% longer.In addition,the lengths of coleoptile and mesocotyl cells of etiolated B1-24 seedlings were 45.95% and 118.28% of that of Hyz,respectively.Treated with 600 μg/mL GA3 or 7 μg/mL IAA,the cell length of B1-24 was significantly increased to the same level of Hyz.While 50 μg/mL PAC could severely shorten all of them.Our results suggested that the semi-dwarf phenotypes of B1-24 may be related to the synthesis of,or response to phytohormone(s). |
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| Keywords: | rice semi-dwarf mutation cytology phytohormone |
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