深水稻和非深水稻的淹没响应比较。
A comparison of the submergence response of deepwater and non-deepwater rice.
机构信息
MSU-DOE Plant Research Laboratory, Michigan State University, East Lansing, Michigan 48824.
出版信息
Plant Physiol. 1986 Feb;80(2):479-82. doi: 10.1104/pp.80.2.479.
Twelve cultivars of rice (Oryza sativa L.), representing deepwater, short-statured, and semidwarf types, were tested for their response to submergence. The magnitude of the response varied between cultivars; however, all cultivars responded to submergence by rapid growth once internodal elongation had started. Three of these cultivars were tested for elongation capacity at four ages. The deepwater rice was capable of rapid internodal elongation in response to submergence at 4 weeks of age. Growth of the short-statured and semidwarf cultivars was not stimulated by submergence until about 10 weeks of age. In air, the internodes of deepwater rice grew slower than did those of the short-statured and semidwarf cultivars. We also investigated the elongation response of stem sections of all 12 cultivars to an atmosphere containing 3% O(2), 6% CO(2), 91% N(2) (all by volume), and 1 microliter per liter ethylene. We found that the response of each of the non-deepwater cultivars was qualitatively and quantitatively similar to that of the deepwater rice.
12 个水稻品种（Oryza sativa L.），代表深水、矮化和半矮化类型，被测试对淹没的反应。品种间的反应幅度不同；然而，所有品种在节间伸长开始后，通过快速生长对淹没作出反应。其中 3 个品种在 4 个年龄时进行了伸长能力测试。深水稻在 4 周龄时对淹没有快速的节间伸长能力。短化和半矮化品种的生长直到大约 10 周龄时才受到淹没的刺激。在空气中，深水稻的节间生长速度比矮化和半矮化品种慢。我们还研究了所有 12 个品种的茎段对含有 3% O(2)、6% CO(2)、91% N(2)（均按体积计）和 1 微升/升乙烯的大气的伸长反应。我们发现，每个非深水品种的反应在定性和定量上都与深水稻相似。
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