Effects of Wx Genotype, Nitrogen Fertilization, and Temperature on Rice Grain Quality.
Effects of Wx Genotype, Nitrogen Fertilization, and Temperature on Rice Grain Quality.
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DOI：
10.3389/fpls.2022.901541
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发表时间：
2022
影响因子：
5.6
通讯作者：
He, Yuqing
中科院分区：
文献类型：
--
作者：
Xia, Duo;Wang, Yipei;Shi, Qingyun;Wu, Bian;Yu, Xiaoman;Zhang, Changquan;Li, Yanhua;Fu, Pei;Li, Minqi;Zhang, Qinglu;Liu, Qiaoquan;Gao, Guanjun;Zhou, Hao;He, Yuqing
关键词：
质量是一种复杂的性状，不仅是水稻市场价值的关键决定因素，也是水稻育种的主要制约因素。它受遗传和环境因素的影响。然而，基因型和环境因素对稻米品质的综合影响尚不清楚。本研究采用三因素试验设计，对不同氮肥和温度条件下生长的不同Wx基因型水稻籽粒品质进行了研究。我们发现这三个因素对味道、外观和营养质量的影响是不同的。增加Wx功能和施氮显著降低了采食品质，而高温几乎没有影响。温度对植株外观质量的主要影响和低温条件下适度的Wx功能有利于植株外观质量的提高，高施氮量有利于植株外观质量的提高。在营养品质方面，Wx等位基因提高了直链淀粉含量（AC）和淀粉脂质含量（SLC）；施氮提高贮藏蛋白含量（PC）；温度升高，脂肪含量升高，PC含量降低。本研究有助于拓宽对影响水稻品质的主要因素的认识，为水稻品质改良和优质水稻品种的培育提供建设性信息。
Quality is a complex trait that is not only the key determinant of the market value of the rice grain, but is also a major constraint in rice breeding. It is influenced by both genetic and environmental factors. However, the combined effects of genotypes and environmental factors on rice grain quality remain unclear. In this study, we used a three-factor experimental design to examine the grain quality of different Wx genotypes grown under different nitrogen fertilization and temperature conditions during grain development. We found that the three factors contributed differently to taste, appearance, and nutritional quality. Increased Wx function and nitrogen fertilization significantly reduced eating quality, whereas high temperature (HT) had almost no effect. The main effects of temperature on appearance quality and moderate Wx function at low temperatures (LTs) contributed to better appearance, and higher nitrogen fertilization promoted appearance at HTs. With regard to nutritional quality, Wx alleles promoted amylose content (AC) as well as starch-lipids content (SLC); nitrogen fertilization increased storage protein content (PC); and higher temperature increased lipid content but decreased the PC. This study helps to broaden the understanding of the major factors that affect the quality of rice and provides constructive messages for rice quality improvement and the cultivation of high-quality rice varieties.
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影响因子：
11.4
作者：
Gao, Zhenyu;Zeng, Dali;Qian, Qian
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