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| 水稻茎秆解剖结构与抗倒伏能力关系的研究 |
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杨艳华1,2, 朱 镇2, 张亚东2, 赵庆勇2, 周丽慧2, 王才林2*
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1.江苏大学 生命科学研究院, 江苏 镇江 212013;2.江苏省农业科学院 粮食作物研究所/
江苏省优质水稻工程技术研究中心/国家水稻改良中心南京分中心, 南京 210014
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| 摘要: |
| 利用石蜡切片法研究了抗倒伏水稻品种南粳44、武运粳7号与不抗倒伏水稻品系宁7412基部茎秆解剖结构及其与水稻抗倒伏能力的关系。结果表明:抗倒伏水稻品种南粳44和武运粳7号基部节间的维管束数目较多,维管束鞘较厚,细胞层数较多,细胞排列紧密、体积较小; 而不抗倒伏水稻品系宁7412基部节间的维管束数目偏少,维管束鞘较薄,细胞层数较少,细胞体积大。从解剖结构还可看出,南粳44和武运粳7号茎秆内的贮藏物质明显多于宁7412。这些茎秆解剖结构的差异可用于区分不同水稻品种(系)的抗倒性强弱,可以作为抗倒伏水稻品种的选育指标和筛选依据,为水稻抗倒伏品种的选育提供了理论依据。 |
| 关键词: 水稻 抗倒性 解剖结构 |
| DOI：10.3969/j.issn.1000-3142.2012.06.022 |
| 分类号:Q944.5 |
| Fund project: |
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| Relationship between anatomic structure of the stem and lodging resistance of rice |
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YANG Yan-Hua1,2, ZHU Zhen2, ZHANG Ya-Dong2,
ZHAO Qing-Yong2, ZHOU Li-Hui2, WANG Cai-Lin2*
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1.Institute of Life Sciences, Jiangsu University, Zhenjiang 212013, China;2.Institute of Food Crops,
Jiangsu Academy of Agricultural Sciences/Jiangsu High Quality Rice R &3.D Center/Nanjing
Branch of China National Center for Rice Improvement, Nanjing 210014, China
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| Abstract: |
| The anatomic structure of the stem was investigated and analyzed through the paraffin method with three rice cultivars(lines)(Nanjing 44,Wuyunjing 7,lodging resistance; Ning 7412,easy lodging). Compared with Ning 7412,Nanjing 44 and Wuyunjing 7 had more developed mechanics tissue,such as more and larger vascular bundles,thicker bundle sheath cell,and more cell layers. It was also found that the basal internodes of Nanjing 44 and Wuyunjing 7 had more storage substance than Ning 7412. The differences of the stem anatomical structure could be used to distinguish the lodging resistance among different rice cultivars(lines),which lay a scientific theoretical basis for rice breeding of lodging resistance. |
| Key words: rice lodging resistance anatomic structure |
