| 对缺硼反应不同的油菜品种根系生长特性研究 |
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| 引用本文： | 宋世文,曹享云,耿明建,刘武定. 对缺硼反应不同的油菜品种根系生长特性研究[J]. 植物营养与肥料学报, 2000, 6(2): 202-206. DOI: 10.11674/zwyf.2000.0212 |
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| 作者姓名： | 宋世文 曹享云 耿明建 刘武定 |
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| 作者单位： | 1.华中农业大学资源环境与农业化学系 湖北武汉430070 |
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| 摘 要： | 在营养液培养、根箱土培和组织培养条件下 ,研究了不同油菜品种根系生长变化动态。结果表明 ,缺硼明显降低根系长度 ,尤其抑制根尖伸长 ,且与品种间缺硼敏感性密切相关 ,即对敏感品种的抑制程度高于不敏感品种。营养液培养条件下缺硼 5天 ,敏感品种根系生长严重受阻 ,根尖解剖结构破坏 ,根冠脱落 ,根尖膨大 ,细胞畸形且排列紊乱 ;而不敏感品种受害程度相对较轻 ,根冠完整 ,根尖稍膨大。表明油菜缺硼基因型差异首先表现在根尖形成和伸长生长上
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| 关 键 词： | 缺硼 甘蓝型油菜 硼效率 根系生长 |
| 修稿时间： | 1999-03-30 |
Root growthcharacteristics of rape cultivars responding to B deficiency |
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| SONG Shi-wei,CAO Xiang-yun,GENG Ming-jian,LIU Wu-ding. Root growthcharacteristics of rape cultivars responding to B deficiency[J]. Plant Nutrition and Fertilizer Science, 2000, 6(2): 202-206. DOI: 10.11674/zwyf.2000.0212 |
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| Authors: | SONG Shi-wei CAO Xiang-yun GENG Ming-jian LIU Wu-ding |
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| Affiliation: | 1.Dept. of Resou.;Envir. and Agrochem.;Huazhong Agric. Univ.;Wuhan 430070 |
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| Abstract: | The root growth dynamics of boron?efficient and inefficient rape cultivar were studied under solution culture, soil culture and MS medium culture, respectively. The results showed that the root growth, in particularly the tip elongation, of two rape cultivars was decreased significantly by boron deficiency, but the reduction of the inefficient cultivar was much more than that of the efficient one. Cultured for 5 days in a B?deficient solution, the anatomical structure of root tip of the inefficient cultivar was destroyed seriously, its root cap was disappeared, the root tip was enlarged, and the tip cells disformed and disarranged. The damage of the efficient cultivar by B deficiency was much less, it had a normal root cap, and a slightly enlarged root tip. These suggest that the genotypical difference of rape cultivars to B deficiency was firstly appeared in the root tip formation and enlongation. |
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