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温度对早籼稻米垩白发生与胚乳物质形成的影响 被引量:76

Effect of Temperature on Rice Chalkiness Formation and Changes of Materials in Endosperm
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摘要 Under two treatments of temperature i. e. high temperature (day/night: 33℃ /29℃ ) and proper temperature (day/night: 26℃ /22℃ ) in growth chamber, grain weight, water content, starch, soluble sugar and protein content and Q enzymes, starch phosphorylase, proteinase, peroxidase in endosperm during grain filling were continuously measured in early indica rice Luhongzao 1 (more chalkiness ) and Zhongyouzao 3 (less chalkiness ).With high temperature treatment, peaks of materials synthesis (or transformation) and enzyme activity in endosperm were earlier than those of proper temperature treatment. It affected the sequence and pattern of changes of materials and enzymes in endosperm during normal grain filling, and resulted in rice chalkiness increasing. Under two treatments of temperature i. e. high temperature (day/night: 33℃ /29℃ ) and proper temperature (day/night: 26℃ /22℃ ) in growth chamber, grain weight, water content, starch, soluble sugar and protein content and Q enzymes, starch phosphorylase, proteinase, peroxidase in endosperm during grain filling were continuously measured in early indica rice Luhongzao 1 (more chalkiness ) and Zhongyouzao 3 (less chalkiness ).With high temperature treatment, peaks of materials synthesis (or transformation) and enzyme activity in endosperm were earlier than those of proper temperature treatment. It affected the sequence and pattern of changes of materials and enzymes in endosperm during normal grain filling, and resulted in rice chalkiness increasing.
机构地区 中国水稻研究所
出处 《中国水稻科学》 CAS CSCD 北大核心 1997年第3期183-186,共4页 Chinese Journal of Rice Science
基金 浙江省自然科学基金 中国农业科学院院长基金
关键词 温度 早籼 稻米 垩白 发生 胚乳 物质形成 灌浆 酶活性 chalkiness, endosperm, enzyme activity, grain filling
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