文献类型：期刊文献

中文题名：Impacts of nighttime post-anthesis warming on rice productivity and grain quality in East China

英文题名：Impacts of nighttime post-anthesis warming on rice productivity and grain quality in East China

作者：Wenjun Dong[1,2] Jin Chen[2] Lili Wang[2] Yunlu Tian[2] Bin Zhang[2] Yongcai Lai[1] Ying Meng[1] Chunrong Qian[1] Jia Guo[3]

第一作者：Wenjun Dong

机构：[1]Institute of Farming and Cultivation,Heilongjiang Academy of Agricultural Sciences;[2]Institute of Applied Ecology,Nanjing Agricultural University;[3]Institute of Wetland Research,Chinese Academy of Forestry

年份：2014

卷号：0

期号：1

起止页码：63-69

中文期刊名：作物学报：英文版

收录：CSTPCD;;Scopus

基金：supported by the National Key Technology Support Program of China (2011BAD16B14);the Chinese Natural Science Foundation (30771278);the Program for New Century Excellent Talents in University (NCET-05-0492)

语种：英文

中文关键词：Climatic;warming;Food;security;Rice;production;Growth;response;Grain;quality

外文关键词：Climatic warming Food security Rice production Growth response Grain quality

分类号：S511

摘要：The impacts of nighttime post-anthesis warming on rice productivity and grain quality in East China were evaluated for two cultivars, II You 128, an indica rice, and Wuyunjing 7, a japonica rice. Warming by 3.0 °C stimulated the nighttime respiration rate and decreased the photosynthesis rate, resulting in significant decreases of 21.2% and 24.9% in aboveground biomass accumulation for II You 128 and Wuyunjing 7, respectively. Warming significantly reduced the rates of seed setting and grain filling, especially of inferior kernels(those lower in panicles), while the filling rate of superior kernels remained almost unchanged. As a result, 1000-grain weight and grain yield were respectively 3.7% and 30.0% lower for II You 128 and 12.8% and 34.3% for Wuyunjing 7 in warmed plots than in the unwarmed control. Nighttime warming also significantly reduced the grain milling and appearance quality of both varieties. More negative effects of warming on inferior than on superior kernels were found. The above results have important implications for rice variety cultivation in East China.
The impacts of nighttime post-anthesis warming on rice productivity and grain quality in East China were evaluated for two cultivars, II You 128, an indica rice, and Wuyunjing 7, a japonica rice. Warming by 3.0 °C stimulated the nighttime respiration rate and decreased the photosynthesis rate, resulting in significant decreases of 21.2% and 24.9% in aboveground biomass accumulation for II You 128 and Wuyunjing 7, respectively. Warming significantly reduced the rates of seed setting and grain filling, especially of inferior kernels(those lower in panicles), while the filling rate of superior kernels remained almost unchanged. As a result, 1000-grain weight and grain yield were respectively 3.7% and 30.0% lower for II You 128 and 12.8% and 34.3% for Wuyunjing 7 in warmed plots than in the unwarmed control. Nighttime warming also significantly reduced the grain milling and appearance quality of both varieties. More negative effects of warming on inferior than on superior kernels were found. The above results have important implications for rice variety cultivation in East China.