Hybrid breeding and cultivar diversity in rice production in China

IF 2.3 4区 农林科学 Q1 AGRICULTURE, MULTIDISCIPLINARY
Min Huang
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引用次数: 2

Abstract

This study determined the effect of hybrid breeding on cultivar diversity in rice (Oryza sativa L.) production in China. The results showed that hybrid breeding led to increases in the Shannon index of cultivar diversity by 29–184% during the period 2011–2015 compared with the period 1986–1990 for 10 major hybrid rice-producing provinces in China. There was a significant exponential relationship between the Shannon index of cultivar diversity and the number of hybrid cultivars and the total number of cultivars across the 10 provinces and the two 5-yr periods. The results of this study also demonstrate that hybrid rice breeding resulted in a cultivar diversity that came close to saturation in some provinces, such as Anhui, Hunan, Jiangxi, and Sichuan, and highlight the urgent need for a reconsideration of the development of hybrid rice industrialization in China to avoid wasting resources caused by overbreeding.

Abstract Image

中国水稻生产中的杂交育种与品种多样性
研究了杂交育种对我国水稻品种多样性的影响。结果表明,2011年至2015年期间,与1986年至1990年期间相比,杂交育种使中国10个主要杂交水稻生产省份的香农品种多样性指数增加了29–184%。在10个省和两个5年期内,品种多样性的香农指数与杂交品种数量和品种总数之间存在显著的指数关系。本研究结果还表明,在安徽、湖南、江西和四川等一些省份,杂交水稻育种导致品种多样性接近饱和,并强调迫切需要重新考虑中国杂交水稻产业化的发展,以避免过度繁殖造成资源浪费。
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来源期刊
CiteScore
3.70
自引率
3.80%
发文量
28
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