期刊
JOURNAL OF AGRONOMY AND CROP SCIENCE
卷 202, 期 6, 页码 564-575出版社
WILEY
DOI: 10.1111/jac.12183
关键词
endosperm cell proliferation; grain-filling characteristic; summer maize; waterlogging
类别
资金
- National Modern Agricultural Technology & Industry System [CARS-02-20]
- National Basic Research Program of China (973 Program) [2015CB150404]
- National Natural Science Funds [31271662]
- Shandong Key Agricultural Technology Innovation Project
A field experiment was performed to study the effects of waterlogging for different durations (3 and 6 days) on grain filling and endosperm cell proliferation of summer maize hybrids DengHai605 (DH605) and ZhengDan958 (ZD958) at the third leaf stage (V3), the sixth leaf stage (V6) and the 10th day after the tasselling stage (10VT). Results showed that waterlogging damages on grain filling and endosperm cell proliferation varied with growth stage and duration of waterlogging. The most significant effect of waterlogging was observed at V3, followed by V6 and 10VT. Endosperm cell content, average endosperm cell proliferation rate, grain weight and grain-filling rate were reduced significantly with increasing waterlogging durations, with the most significant (P<0.05) reduction in V3-6 with a decrease of 37.1%, 51.9%, 13.6% and 12.1% for DH605, and 27.3%, 51.1%, 17.4% and 14.3% for ZD958, respectively. Waterlogging damages on grain filling and endosperm cell proliferation resulted in a significant reduction in grain yield. Waterlogging at V3 had the most yield reduction, followed by V6 and 10VT. Yield reduction after waterlogging for 6days at different stage was about twice as much as that after waterlogging for 3days. Clearly, the most significant inhibition of grain growth for waterlogging was observed at V3, followed by V6 and 10VT. The inhibition was enhanced significantly with increasing waterlogging durations. Endosperm cell number and grain weight was decreased by 8.3-24.1% and 1.2-10.8% after waterlogging for 3days, while decreased by 12.9-32.2% and 4.6-14.7% after waterlogging for 6days, compared to CK.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据