| 两个不同穗型小麦品种生育后期碳水化合物代谢的比较研究 |
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| 引用本文： | 赵会杰,邹琦,张秀英.两个不同穗型小麦品种生育后期碳水化合物代谢的比较研究[J].作物学报,2003,29(5):676-681. |
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| 作者姓名： | 赵会杰 邹琦 张秀英 |
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| 作者单位： | 河南农业大学农学院,河南郑州,450002 |
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| 基金项目： | 国家重点基础研究发展规划项目 (G19980 10 10 0 )，河南省自然科学基础研究项目资助 (0 1110 10 80 0 ) |
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| 摘 要： | 比较研究表明,两个不同穗型小麦品种在产量形成期的碳水化合物代谢存在明显差异.大穗型品种(豫麦66)在灌浆中后期旗叶可维持较高的净光合速率(Pn)、蔗糖磷酸合成酶(SPS)活性与可溶性碳水化合物(WSC)含量;籽粒则具有较高的蔗糖合成酶(SS)活性和淀粉积累速率.因此,其产量水平和反映源库关系协调程度的粒叶比均高于多穗型品种(豫
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| 关 键 词： | 小麦 大穗型 多(小)穗型 碳水化合物代谢 |
| 收稿时间： | 2002-05-16 |
| 修稿时间： | 2002年5月16日 |
Comparison between Two Wheat Varieties with Different Spike Type in Carbohydrate Metabolism during Late Growth Period |
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| Zhao Huijie,Zou Qi,Zhang Xiuying.Comparison between Two Wheat Varieties with Different Spike Type in Carbohydrate Metabolism during Late Growth Period[J].Acta Agronomica Sinica,2003,29(5):676-681. |
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| Authors: | Zhao Huijie Zou Qi Zhang Xiuying |
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| Abstract: | Two wheat varieties with different spike type were used to study carbohydrate metabolism during the stage for yield formation and obvious differences were found. Compared with small-spike variety (Yumai 49), large-spike variety (Yumai 66) maintained higher net photosynthetic rate, activity of sucrose phosphate synthase and content of water soluble carbohydrate in flag leaf during mid to late grain-filling stage. At the same time, the activity of sucrose synthase and the rate of starch accumulation in the grains of Yumai 66 were also higher than those of Yumai 49. Consequently, the yield and the grain-leaf ratio (an index for measuring source-sink relationship) of the large-spike variety were higher than those of the small-spike variety. |
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| Keywords: | Wheat Large-spike variety Small-spike variety Carbohydrate metabolism |
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