Response to climate warming of winter wheat varieties bred across different eras in the North China Plain

扫码查看

原文链接

万方数据

外文摘要：By the 2000s,the winter wheat regions in the North China Plain had undergone six major variety renewals.It is crucial to know how the winter wheat varieties bred across different eras respond to climate change,especially climate warming.From 2017 to 2022,we conducted a two-factor,two-level field experiment at Gucheng and Raoyang,with a temperature difference of 1℃ existing between the two sites.The experiment used ten winter wheat varieties bred from the 1960s to the 2000s and included both fertilization and no fertilization treatments.The experiment aimed to separate the effects of warming and fertilization on the growth and development of the winter wheat varieties,thereby revealing the differences in their responses to warming.All the winter wheat varieties across different eras had higher yields in warmer environments.By separating the effects of warming and fertilization,the rate of yield increase decreased with the breeding eras of varieties due to the impact of warming alone.However,it still increased with the eras due to the combined effects of warming and fertilization.For varieties from the 1980s and 2000s,there is a strong correlation between higher fertility and warmer climate adaptability.Warming has a yield gain effect,significantly amplifying the yield increase under fertilization for the middle and late varieties.Therefore,the average yield increase for varieties from the 2000s reached 67％in warmer environments.Warming has increased the average daily minimum temperature during the winter wheat growing season.It has significantly reduced the number of days below zero degrees Celsius,shortening the overwintering stage and thereby shortening the growth period of winter wheat.However,the effective developmental days(＞0℃ days)maintained a consistent level.Warming promotes the development of large tillers,increases leaf area and dry matter accumulation,and reduces the ratio of sterile spikelets.The varieties from the 2000s had the lowest ratio of sterile spikelets and the highest harvest index(HI)in warmer environments,resulting in a significant increase in yield.This study reveals the differential responses to the warming of winter wheat varieties across different eras,which have a specific reference for winter wheat breeding to cope with climate change.

外文关键词：

Climate warmingWinter wheat varietiesBreedingFertilizationResponse

作者：

Zhaoyang JIANG、Shibo FANG、Dong WU、Xin LIU、Huarong ZHAO、Jie GUO、Xinru ZHANG、Yongchao ZHU、Xuan LI、Yingjie WU、Dingrong WU

展开 >

作者单位：

State Key Laboratory of Severe Weather,Chinese Academy of Meteorological Sciences,Beijing 100081,China

College of Resources and Environment,Anhui Agricultural University,Hefei 230036,China

Raoyang National Climate Observatory,Hengshui 053900,China

Meteorological Observation Center,China Meteorological Administration,Beijing 100081.China

Meteorological Data Center,Shandong Meteorological Bureau,Jinan 250031,China

展开 >

出版年：

2024

DOI：

10.1007/s11430-023-1432-0

中国科学:地球科学(英文版)

中国科学院

中国科学:地球科学(英文版)

影响因子：1.002

ISSN：1674-7313

年,卷(期)：2024.67(12)