不同种植区域种植的水稻种质资源中产量与品质的关系。
Relationship between grain yield and quality in rice germplasms grown across different growing areas.
作者信息
Xu Quan, Chen Wenfu, Xu Zhengjin
机构信息
Rice Research Institute of Shenyang Agricultural University, Key Laboratory of Northern Japonica Rice Genetics and Breeding, Ministry of Education and Liaoning Province, Key Laboratory of Northeast Rice Biology and Genetics and Breeding, Ministry of Agriculture , Shenyang 110866 , China ; Laboratory of Plant Breeding, Graduate School of Agriculture, Kyoto University , Kyoto 606-8502 , Japan.
Rice Research Institute of Shenyang Agricultural University, Key Laboratory of Northern Japonica Rice Genetics and Breeding, Ministry of Education and Liaoning Province, Key Laboratory of Northeast Rice Biology and Genetics and Breeding, Ministry of Agriculture , Shenyang 110866 , China.
出版信息
Breed Sci. 2015 Jun;65(3):226-32. doi: 10.1270/jsbbs.65.226. Epub 2015 Jun 1.
Rice grain yield and quality are two major foci of rice breeding. In this study, Chinese regional rice test data provide us the unique opportunity to analyze the relationship between yield and quality in rice, because China has an unusually wide range of rice cultivars. We analyzed the relationships between grain yield, yield components, and grain quality of 300 rice germplasms. Japonica was superior in both yield and quality compared with indica. A high setting rate improved the head rice ratio. A higher 1000 grain weight was negatively correlated with quality characteristics but had a positive correlation with yield. A high spikelet density (number of grains per centimeter on the panicle) not only benefits the yield but also the head rice ratio and chalkiness traits. According to our results, global rice production can be increased to at least 8500 kg/ha to meet projected demands in 2025 without sacrificing grain quality.
水稻产量和品质是水稻育种的两个主要重点。在本研究中，中国区域水稻试验数据为我们分析水稻产量与品质之间的关系提供了独特的机会，因为中国拥有异常广泛的水稻品种。我们分析了300份水稻种质的籽粒产量、产量构成因素和籽粒品质之间的关系。粳稻在产量和品质方面均优于籼稻。高结实率提高了整精米率。较高的千粒重与品质特性呈负相关，但与产量呈正相关。高小穗密度（穗上每厘米籽粒数）不仅有利于产量，而且有利于整精米率和垩白性状。根据我们的结果，在不牺牲籽粒品质的情况下，全球水稻产量可至少提高到8500公斤/公顷，以满足2025年的预计需求。
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