Discussion on strategy of grain quality improvement for super high yielding japonica rice in Northeast China

IMR OpenIR

	Discussion on strategy of grain quality improvement for super high yielding japonica rice in Northeast China
其他题名	Discussion on strategy of grain quality improvement for super high yielding japonica rice in Northeast China
	Mao Ting 1; Li Xu 2; Jiang Shukun 3; Tang Liang 1; Wang Jiayu 1; Xu Hai 1; Xu Zhengjin 1
	2017
发表期刊	JOURNAL OF INTEGRATIVE AGRICULTURE
ISSN	2095-3119
卷号	16 期号:5 页码:1075-1083
摘要	japonica rice is mainly distributed in Northeast China and accounts for 44.6% of the total cultivated area of japonica rice in China. The comprehensive using of inter -subspecies heterosis is the main breeding mode of super japonica rice varieties in this region. Improving rice quality at relative high yielding level is the current research focus. Performing crosses between indica and japonica lines allows for the recombination of regulatory genes and genetic backgrounds, leading to.connplicated genetic rice quality characteristics, which can be used to explore patterns of quality improvement. In the present study, we utilize recombinant inbred lines (RILs) derived from indica japonica hybridization to analyze the effect factors of rice quality derived from genetic factors, which contain both regulatory genes concerning rice quality and genetic backgrounds' random introduction frequency coming from indica (Di value), and the improvement strategy was further discussed. The regulatory genes involved in amylase content (Wx) and nitrogen utilization efficiency (NRT1.113) were the major factors affecting the amylose content (AC) and protein content (PC) in RILs, respectively. Both the Di value and the major grain width gene (GS5) had regulatory effects on milled rice width (MRW) in RILs, and their interaction explained the major variance of MRW in the RILs. With the mediation of MRW and chalkiness degree (C), Di value had a further impact on head rice rate (HR), which was relitively poor when the Di value was over 40%. In Northeast China, the Di value should be lowered by backcrossing or multiple crosses during the breeding of indica japonica hybridization to maintain the whole better HR and further to emphasize the use of favorable genes in individual selection.
其他摘要	japonica rice is mainly distributed in Northeast China and accounts for 44.6% of the total cultivated area of japonica rice in China. The comprehensive using of inter-subspecies heterosis is the main breeding mode of super japonica rice varieties in this region. Improving rice quality at relative high yielding level is the current research focus. Performing crosses between indica and japonica lines allows for the recombination of regulatory genes and genetic backgrounds, leading to complicated genetic rice quality characteristics, which can be used to explore patterns of quality improvement. In the present study, we utilize recombinant inbred lines (RILs) derived from indica-japonica hybridization to analyze the effect factors of rice quality derived from genetic factors, which contain both regulatory genes concerning rice quality and genetic backgrounds’ random introduction frequency coming from indica (Di value), and the improvement strategy was further discussed. The regulatory genes involved in amylase content (Wx) and nitrogen utilization efficiency (NRT1.1B) were the major factors affecting the amylose content (AC) and protein content (PC) in RILs, respectively. Both the Di value and the major grain width gene (GS5) had regulatory effects on milled rice width (MRW) in RILs, and their interaction explained the major variance of MRW in the RILs. With the mediation of MRW and chalkiness degree (C), Di value had a further impact on head rice rate (HR), which was relatively poor when the Di value was over 40%. In Northeast China, the Di value should be lowered by backcrossing or multiple crosses during the breeding of indica-japonica hybridization to maintain the whole better HR and further to emphasize the use of favorable genes in individual selection.
关键词	SUBSPECIES DIFFERENTIATION RILS POPULATION EATING QUALITY ENCODES TRAITS QTL COOKING WEIGHT INDICA WIDTH super rice indica-japonica hybridization genetic dissection quality improvement
收录类别	CSCD
语种	英语
资助项目	[National Natural Science Foundation of China] ; [Cultivation Plan for Youth Agricultural Science Technology Innovative Talents of Liaoning Province, China] ; [Program for Changjiang Scholars and Innovative Research Team in University, China]
CSCD记录号	CSCD:5991333
引用统计	被引频次：5[CSCD] [CSCD记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/155159
专题	中国科学院金属研究所
作者单位	1.中国科学院金属研究所 2.Liaoning Institute Saline Alkali Land Utilizat, Panjin 124010, Peoples R China 3.Heilongjiang Acad Agr Sci, Cultivat & Farming Res Institute, Harbin 150086, Peoples R China
推荐引用方式 GB/T 7714	Mao Ting,Li Xu,Jiang Shukun,et al. Discussion on strategy of grain quality improvement for super high yielding japonica rice in Northeast China[J]. JOURNAL OF INTEGRATIVE AGRICULTURE,2017,16(5):1075-1083.
APA	Mao Ting.,Li Xu.,Jiang Shukun.,Tang Liang.,Wang Jiayu.,...&Xu Zhengjin.(2017).Discussion on strategy of grain quality improvement for super high yielding japonica rice in Northeast China.JOURNAL OF INTEGRATIVE AGRICULTURE,16(5),1075-1083.
MLA	Mao Ting,et al."Discussion on strategy of grain quality improvement for super high yielding japonica rice in Northeast China".JOURNAL OF INTEGRATIVE AGRICULTURE 16.5(2017):1075-1083.