| 慕宇,朱荣,孙立影,康建宏.氮肥基追比对花后高温胁迫下春小麦淀粉形成的影响[J].干旱地区农业研究,2017,35(5):208~215 |
| 氮肥基追比对花后高温胁迫下春小麦淀粉形成的影响 |
| Effect of nitrogen dressing ratios and high temperature on the formation of starch after anthsis of spring wheat |
| |
| DOI：10.7606/j.issn.1000-7601.2017.05.31 |
| 中文关键词: 春小麦 高温 氮素 淀粉 产量 |
| 英文关键词:spring wheat high temperature nitrogen starch yield |
| 基金项目:国家自然科学基金(31160255)；国家科技支撑项目(2015BAD22B01) |
|
| 摘要点击次数: 1118 |
| 全文下载次数: 614 |
| 中文摘要: |
| 采用盆栽的方法研究不同的氮肥基追比对高温胁迫春小麦花后淀粉形成和产量的影响。结果表明：高温胁迫条件下，宁春4号和宁春47号籽粒直链淀粉、支链淀粉以及淀粉总含量、淀粉形成关键酶（ADPG-PPase、UDPG-PPase、SSS、GBSS）活性、千粒重和生物产量等与常温处理相比显著降低。两个品种氮肥基追比3∶7和4∶6条件下的直链淀粉含量、AGPP-PPase、GBSS、千粒重、生物产量等均优于氮肥基追比5∶5、7∶3、6∶4的处理。因此，花后高温降低了籽粒淀粉的含量、关键酶活性，从而降低了小麦产量和品质，而合理的氮肥基追比（3∶7和4∶6）能减轻高温对春小麦产量以及淀粉品质的影响。生产上可以采取相应的措施缓解高温的危害，提高春小麦产量和品质。 |
| 英文摘要: |
| Effect of nitrogen dressing ratios and high temperature on the formation of starch and yield after anthsis in spring wheat were studied by pot experiment. The result showed that, under high temperature,grain amylose, amylopectin, the concentration of total starch, key enzymes (ADPG-PPase, UDPG-PPase, SSS, GBSS) activity and yield of Ningchun 4 and Ningchun 47 were lower than the normal temperature processing. The concentration of amylose, the activity of AGPP-PPase, GBSS following the nitrogen dressing ratios of N1 (3∶7) and N2 (4∶6) were higher than the other nitrogen dressing ratios. Therefore, the concentration of starch and key enzymes activity were mainly affected by high temperature after flowering, which then affected the yield and quality. The effect of high temperature the yield and quality could be mitigated by reasonable nitrogen dressing ratios (3∶7 and 4∶6). For this reason, it was suggested that the reasonable measures could be taken to ease the harm of high temperature and improve the yield and quality of the spring wheat. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| | |