Response of grain-filling rate and grain quality of mid-season indica rice to nitrogen application

作     者：ZHANG Jing ZHANG Yan-yan SONG Ning-yuan CHEN Qiu-li SUN Hong-zheng PENG Ting HUANG Song ZHAO Quan-zhi ZHANG Jing;ZHANG Yan-yan;SONG Ning-yuan;CHEN Qiu-li;SUN Hong-zheng;PENG Ting;HUANG Song;ZHAO Quan-zhi

作者机构：College of AgronomyHenan Agricultural UniversityZhengzhou 450046P.R.China Xinyang Agriculture and Forestry UniversityXinyang 464001P.R.China 

出 版 物：《Journal of Integrative Agriculture》 (农业科学学报（英文版）)

年 卷 期：2021年第20卷第6期

页      面：1465-1473页

核心收录：

学科分类：09[农学] 0901[农学-作物学] 

基　　金：the National Key R&D Program of China(2016YFD0300505) the Rice Industry Technology System of Henan Province,China(S201204-G02) 

主　　题：mid-season indica rice grain-filling rate rice quality nitrogen 

摘      要：Nitrogen is one of the important factors for high yield of *** from high yield,high quality has become the current urgent demand for rice ***-filling stage is crucial for rice yield and quality ***,the effect of nitrogen on grain-filling characteristics and the relationship of grain-filling characteristics and rice quality of mid-season indica rice were still unclear.A field experiment was carried out to ascertain the critical grain-filling characteristics that contribute to rice milling quality,appearance quality and cooking and eating quality under nitrogen *** results showed that nitrogen applications prolonged the duration of superior and inferior grain *** mean grainfilling rate(G_(mean))and the maximum grain-filling rate(G_(max))of the inferior grains were positively correlated with chalky kernel rate,chalkiness,and amylose *** time reaching the maximum grain-filling rate(T_(max)G)of the inferior grains was positively correlated with brown rice rate,milled rice rate,and head milled rice *** kernel rate and chalkiness were negatively correlated with peak paste viscosity and breakdown *** amylose content and more crude protein content were detected in nitrogen application of Liangyoupei 9 and Y Liangyou 2 both in 2016 and *** to the correlation analysis,better cooking and eating quality of Y Liangyou 2 which had less amylose content might result from its higher G_(max)and G_(mean)of inferior grain than that of Liangyoupei 9 in the treatments of nitrogen *** results indicated that the prolonging grain-filling duration and increasing grain weight at the maximum grain-filling rate of inferior grains contributed to the improvement of milling quality,appearance quality,and cooking and eating quality of mid-season indica rice under appropriate nitrogen applications.