| 不同小麦品种籽粒淀粉组分及相关酶活性的差异 |
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| 引用本文： | 赵俊晔,于振文,孙慧敏,马兴华,孙强.不同小麦品种籽粒淀粉组分及相关酶活性的差异[J].作物学报,2004,30(6):525-530. |
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| 作者姓名： | 赵俊晔 于振文 孙慧敏 马兴华 孙强 |
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| 作者单位： | 山东农业大学农业部小麦栽培生理与遗传改良重点开放实验室，山东泰安 271018 |
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| 基金项目： | 国家自然科学基金，科技部研究示范项目 |
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| 摘 要： | 根据小麦成熟期籽粒淀粉组分的差异，用聚类分析的方法，将籽粒总淀粉含量相近、直链淀粉和支链淀粉含量存在差异的9个小麦品种分为3组：低直链淀粉组、中直链淀粉组和高直链淀粉组。研究籽粒灌浆过程中，直链淀粉与支链淀粉比值（直/支比值）的变化动态、淀粉合成相关酶活性的变化动态及其与淀粉组分积累的关系。结果表明：
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| 关 键 词： | 小麦 品种 直链淀粉 支链淀粉 淀粉合成相关酶 |
| 收稿时间： | 2003-01-28 |
| 修稿时间： | 2003年1月28日 |
Differences in Starch Components and Related Enzymes Activity in the Grains of Different Wheat Cultivars |
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| ZHAO Jun Ye,YU Zhen Wen ,SUN Hui Min,MA Xing Hua,SUN Qiang.Differences in Starch Components and Related Enzymes Activity in the Grains of Different Wheat Cultivars[J].Acta Agronomica Sinica,2004,30(6):525-530. |
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| Authors: | ZHAO Jun Ye YU Zhen Wen SUN Hui Min MA Xing Hua SUN Qiang |
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| Institution: | Key Laboratory of Wheat Cultivation Physiology & Genetic Improvement, Ministry of Agriculture, Shandong Agricultural University, Tai’an 271018, Shandong |
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| Abstract: | Nine wheat cultivars with similar total starch content and different amylose and amylopectin content in mature stage were classified into three groups: low amylose, medium amylose and high amylose. The dynamic changes in ratio of amylose to amylopectin, and the activity changes of four enzymes in relation to starch biosynthesis and their relationships to the amylose and amylopectin accumulated during grain filling period were examined. The results showed that the ratio of amylose and amylopectin of wheat cultivars from group of high amylose was significantly higher than those of the other groups in the 28 d and 35 d after anthesis, and that the different ratio of amylose to amylopectin of variant wheat cultivars was caused by different amylose and amylopectin accumulation rate during middle and late stages of grain filling. Wheat cultivars, from group of low amylose, also with low granule bounded starch synthetase (GBSS) activity during filling stage and with low adenosine diphosphate glucose pyrophosphorylase (ADPGPPase) and uridinediphosphate glucose pyrophosphorylase (UDPGPPase) activity during middle stage and late stage of filling, produced less amylose in grains. High soluble starch synthetase (SSS) activity enhanced accumulation of amylose and amylopectin in the early stage of filling, but it would accelerate amylopectin accumulation and decelerate amylose accumulation in the late stage of filling. |
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| Keywords: | Wheat Cultivar Amylose Amylopectin Enzymes in relation to starch biosyntheses |
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