强、中、弱筋小麦籽粒中淀粉、蛋白质积累和淀粉体发育的比较
强、中、弱筋小麦籽粒中淀粉、蛋白质积累和淀粉体发育的比较
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DOI：
10.3724/sp.j.1006.2009.00962
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发表时间：
2009-03
期刊：
影响因子：
--
通讯作者：
熊飞
中科院分区：
文献类型：
--
作者：
熊飞
以强筋、中筋、弱筋小麦品种烟农19、扬麦16、宁麦13为材料，比较了籽粒灌浆过程中淀粉和蛋白质的积累以及成熟籽粒中淀粉质组分的变化。3个品种籽粒中淀粉、直链淀粉和支链淀粉含量的动态变化趋势相似，表现为宁麦13号>扬麦16号>扬农19号。灌浆期淀粉、直链淀粉和支链淀粉的积累量呈S曲线变化，积累速率呈抛物线变化。3个品种中，扬农19的淀粉及其组分积累量和积累率最高，宁麦13最低。3个品种籽粒灌浆过程中蛋白质含量变化均呈V型曲线，盐农19籽粒蛋白质含量最高，宁麦13籽粒蛋白质含量最低。在籽粒发育过程中，前期以大淀粉体为主，后期以小淀粉体为主。3个品种的大淀粉体数依次为盐农19号>扬麦16号>宁麦13号，小淀粉体数则相反。在成熟籽粒胚乳细胞中，盐农19的大淀粉体多于小淀粉体，且结构致密。在宁麦13号上，观察到了相反的情况。
Wheat cultivars Yannong 19, Yangmai 16, and Ningmai 13 responsible for strong-, medium-, and weak-gluten types respectively, were used to compare the accumulations of starch and protein during grain filling as well as the amyloplast components in mature grains. The contents of starch, amylose, and amlylopectin in grains showed similar dynamic changes in the three cultivars, and ranked as Ningmai 13＞Yangmai l6＞Yangnong 19. The accumulation quantifies of starch, amylose, and amlylopectin varied in trends of S-curve during the grain-filling period, and the accumulation rate was in a parabola. Among the three cultivars, Yangnong 19 possessed the highest quantity and rate in the accumulation of starch and its components, and Ningmai 13 the lowest. The changes of protein content during grain filling in three cultivars all presented V-curves with the highest content in Yannong 19 and the lowest content in Ningmai 13. During the development of grains, large amyloplast formed in earlier period and small amyloplast was observed mainly in later period. The quantity of large amyloplast in the three cultivars showed Yannong 19＞Yangmai 16＞Ningmai 13, whereas those of small amyloplast randed in the opposite direction. In endosperm cells of mature grain, large amyloplast was more than small amyloplast in Yannong 19, and the amyloplasts were in compact structures. In Ningmai 13, the opposite status was observed.
影响因子：
1.9
作者：
J. Panozzo;H. Eagles
通讯作者：
J. Panozzo;H. Eagles