| 摘要: |
| 1988年用不同类型的19个水稻品种在全国13个试点的分期播种试验和1989年的人工气候箱控温试验结果表明：结实期日均温是影响直链淀粉含量（Amylose content，AC）的最显著温度因子；大部分品种的AC与结实期温度间存在二次曲线关系，高AC品种在较高温度下的AC最大，而中、低AC品种的AC在较低温度下达到品种的最大AC值，AC对温度的敏感性同温度的高低有关，并存在品种类型间的差异；AC主要受结实前期的温度控制。 |
| 关键词: 直链淀粉含量，结实期，日均温，品种类型，水稻 |
| DOI： |
| 分类号:S511.101 |
| 基金项目:高等学校博士点基金资助项目 |
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| The Rdlationship between Amylose Content in Rice Grain and Temperature in Grain-Filling Stage |
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Zhou Deyi Zhang Songwu Gao Rusong Zhu Biyan,Zhou Deyi Zhang Songwu Gao Rusong Zhu Biyan,Zhou Deyi Zhang Songwu Gao Rusong Zhu Biyan
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| Abstract: |
| Based on the tests of 19 rice varieties with many sowing dates carried out in 13 experimcntal points in the country in 1988 and also the tests made in the artificial climate chamber in 1989 ,it has been found that the mean daily temperature is the most significant temperature affecting amylose content in rice varieties in the grain-filling stage;and that there is a quadratic curve relation between rice varieties with high amylose content and temperature in the grain-filling stage. Rice varieties with high amylose content show the highest amylose content under the higher temperature,while rice varieties with the middle and low amylose contents reach the maximum amylose content value under the lower temperature. The susceptibility of amylose content to temperature is related to high and low temperatures and also , exists in differences of rice varieties.Amylose content in rice varieties is mainly controlled by the temperature in early flling stage. |
| Key words: amylose content, grain-filling stage,mean daily temperature,variety type,rice |
