Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2022, Vol. 38 ›› Issue (11): 64-74.doi: 10.11924/j.issn.1000-6850.casb2021-0454

Special Issue: 生物技术 农业气象

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The Impact of Climate Change on Crop Breeding Strategies in China

WANG Heting1(), ZHANG Conghe1(), FANG Yu1,2, CHU Jinhua3, YAN Zhi1, ZHOU Guixiang1, WANG Lin1, YANG Wei1, SHEN Guangle1, WANG Hui1   

  1. 1Anhui Win-all Hi-tech Seed Co.,Ltd., /Key Laboratory of Hybrid Rice New Varieties Creation, Ministry of Agriculture and Rural Affairs, Hefei 230088
    2Shanghai ZKW Molecular Breeding Technology Co., Ltd., Shanghai 200233
    3Shanghai Materials Management Office of China Meteorological Administration, Shanghai 200050
  • Received:2021-04-27 Revised:2021-06-18 Online:2022-04-15 Published:2022-05-18
  • Contact: ZHANG Conghe E-mail:345363406@qq.com;Zhangch7201@vip.sohu.com

Abstract:

Climate change has a direct impact on crop yield. Breeding new crop varieties according to production practice and climate characteristics is of great significance to food security in China. In this paper, we used the data of meteorological stations and grain yield from 1979 to 2014 in China’s main grain producing areas and northwest to clarify the characteristics of grain yield and climate change through statistical analysis. The results showed that the annual mean temperature increased in northeast China, the Huang-Huai-Hai region, the Yangtze River Basin and northwest China, and the increase rate was 0.30℃/10 a, 0.37℃/10 a, 0.38℃/10 a and 0.48℃/10 a, respectively, which was significantly correlated with grain yield. The annual mean temperature decreased from south to north and east to west. Due to the uneven distribution of heat resources, the change of annual precipitation rate in different regions was significantly different, but had no significant correlation with grain yield. Therefore, grain crop breeding should be based on the principles of high quality, high yield, multiple resistance, and suitability for mechanized production, and a breeding strategy combining traditional breeding and modern molecular biology techniques should be adopted. We should focus on improving the water logging tolerance and lodging resistance of rice varieties in the northeast, the high-temperature tolerance of rice varieties in the Huang-Huai-Hai region and the Yangtze River Basin, the low-temperature tolerance of late-season rice varieties in the northwest, and the drought tolerance of wheat and maize varieties in all regions.

Key words: climate change, mean temperature, precipitation rate, main grain producing areas, crop, yield, breeding strategies

CLC Number: