Key Laboratory of Crop Genomics and Molecular Breeding of Jiangsu Province, State Key Laboratory of Hybrid Rice, Key Laboratory of Plant Functional Genomics of the Ministry of Education, Yangzhou University, Yangzhou 225009, China; Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Jiangsu Key Laboratory of Crop Genetics and Physiology, Yangzhou University, Yangzhou 225009, China.
Key Laboratory of Crop Genomics and Molecular Breeding of Jiangsu Province, State Key Laboratory of Hybrid Rice, Key Laboratory of Plant Functional Genomics of the Ministry of Education, Yangzhou University, Yangzhou 225009, China.
Biotechnol Adv. 2022 Nov;60:108014. doi: 10.1016/j.biotechadv.2022.108014. Epub 2022 Jun 28.
Grain appearance, one of the key determinants of rice quality, reflects the ability to attract consumers, and is characterized by four major properties: grain shape, chalkiness, transparency, and color. Mining of valuable genes, genetic mechanisms, and breeding cultivars with improved grain appearance are essential research areas in rice biology. However, grain appearance is a complex and comprehensive trait, making it challenging to understand the molecular details, and therefore, achieve precise improvement. This review highlights the current findings of grain appearance control, including a detailed description of the key genes involved in the formation of grain appearance, and the major environmental factors affecting chalkiness. We also discuss the integration of current knowledge on valuable genes to enable accurate breeding strategies for generation of rice grains with superior appearance quality.
稻谷外观是决定稻米品质的关键因素之一，反映了稻谷吸引消费者的能力，其特征主要包括四大属性：粒形、垩白度、透明度和颜色。挖掘有价值的基因、研究遗传机制以及培育具有改良外观的品种，是水稻生物学的重要研究领域。然而，稻谷外观是一个复杂而综合的性状，因此很难理解其分子细节，从而难以实现精确的改良。本综述重点介绍了稻谷外观控制的最新研究成果，包括参与稻谷外观形成的关键基因的详细描述，以及影响垩白度的主要环境因素。我们还讨论了整合有价值基因的现有知识，以实现准确的育种策略，从而培育出具有优异外观品质的稻谷。
