| 淹水对玉米不定根形态结构和ATP酶活性的影响 |
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| 引用本文： | 魏和平,利容千.淹水对玉米不定根形态结构和ATP酶活性的影响[J].植物生态学报,2000,24(3):293-297. |
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| 作者姓名： | 魏和平 利容千 |
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| 作者单位： | 武汉大学生命科学院!武汉430072 |
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| 基金项目： | 国家“九·五”科技攻关项目的子项目!( 95 -0 0 1-0 4-0 2 ) |
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| 摘 要： | 淹水２天后，玉米苗基节内即有不定根原基一进于正常植株。淹水１６天后，从基节部长出的不定根数多于正常植株，但淹水导致根系生长和干物质积累大幅度下降。淹水幼苗不定根伸长区内有发达的通气组织形成，使根内部组织孔隙度大幅提高。电镜细胞化学研究表明，经１５天淹一，不定根根尖细胞内ＡＴＰ酶的分布与正常功苗基本相同，酶活性尽管有一定的下降，但仍保持较高水平。根据实验结果，本文重点讨论了不定根的发生及其内部通气组
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| 关 键 词： | 淹水 玉米 不定根 通气组织 ATP酶 |
| 修稿时间： | 1999-01-21 |
EFFECT OF FLOODING ON MORPHOLOGY,STRUCTURE AND ATPASE ACTIVITY IN ADVENTITIOUS ROOT APICAL CELLS OF MAIZE SEEDLINGS |
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| WEI He,Ping and LI Rong,Qian.EFFECT OF FLOODING ON MORPHOLOGY,STRUCTURE AND ATPASE ACTIVITY IN ADVENTITIOUS ROOT APICAL CELLS OF MAIZE SEEDLINGS[J].Acta Phytoecologica Sinica,2000,24(3):293-297. |
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| Authors: | WEI He Ping and LI Rong Qian |
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| Abstract: | Formation of adventitious root primordia in the basal node of maize seedlings is observed after 2 days in plants that have been flooded:earlier than in unflooded maize seedlings.The number of adventitious roots growing from the basal node in maize seedlings flooded for 15 days is significantly higher than in unflooded seedlings.However,flooding also strongly reduces the growth of adventitious roots and dry matter accumulation of the whole root system.By 15 days of flooding maize seedlings have produced many aerenchyma formations in adventitious roots.These markedly increase the internal porosity of adventitious roots.Results of ultracytochemistry research show that the ATPase distribution pattern in adventitious root apical cells of maize seedlings flooded for 15 days is similar to that of normal maize seedlings. The ATPase activity in root apical cells of flooded maize is lower than in normal maize,though still very high.The discussion addresses the relationship between adventitious root,their internal aerenchyma formation and the flooding tolerance of plant. |
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| Keywords: | Flooding Maize Adventitious roots Aerenchyma ATPase |
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