| 不同耐旱性玉米根系解剖结构比较研究 |
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| 引用本文： | 刘胜群,宋凤斌.不同耐旱性玉米根系解剖结构比较研究[J].干旱地区农业研究,2007,25(2):86-91. |
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| 作者姓名： | 刘胜群 宋凤斌 |
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| 作者单位： | 1. 中国科学院东北地理与农业生态研究所,吉林,长春,130012;中国科学院研究生院,北京,100039
2. 中国科学院东北地理与农业生态研究所,吉林,长春,130012 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 以大田生长的不同耐旱性玉米品种为试验材料,采用徒手切片法和常规石蜡制片法对玉米的初生根和各层次生根的基部、中部和根毛区显微结构进行了系统研究和比较.结果显示:与不酎旱品种玉米的根系相比,耐旱玉米的初生胚根的皮层细胞层数较少,木质部导管数量较多、导管直径较小;各层次生根的皮层细胞层教相对较少,木质部导管数量相对较多,导管直径相对较小.
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| 关 键 词： | 玉米 耐旱性 根系 解剖结构 |
| 文章编号： | 1000-7601（2007）02-0086-06 |
| 修稿时间： | 2006-07-17 |
A comparison of root anatomical structure of maize genotypes with different drought tolerance |
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| LI U Sheng-qun,SONG Feng-bin.A comparison of root anatomical structure of maize genotypes with different drought tolerance[J].Agricultural Research in the Arid Areas,2007,25(2):86-91. |
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| Authors: | LI U Sheng-qun SONG Feng-bin |
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| Institution: | 1. Northeast Institute of Geography and Agricultural Ecology, Chinese Academy of .Sciences, Changchun 130012, China ; 2. Graduate School of Chinese Academy of Sciences, Beijing 100039, China |
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| Abstract: | To investigate the relation between root anatomical structure and tolerance to drought of maize,experiments of maize with different tolerance to drought were conducted in the field.The microstructure of primary root and different secondary roots were studied by hand sectioning and routine mineral wax moviemaking.The result showed that the maize with high tolerance to drought had fewer cortex cell layer numbers,lesser diameter of metaxylem vessel,more metaxylem vessel amount in primary radicel,and fewer cortex cell layer numbers,more metaxylem vessel and lesser diameter in various secondary roots, compared with the maize with low tolerance to drought. |
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| Keywords: | maize drought tolerance root system anatomical structure |
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