Responses of maize with different growth periods to heat stress around flowering and early grain filling
文献类型: 外文期刊
作者: Dong, Xin 1 ; Guan, Ling 1 ; Zhang, Pihui 1 ; Liu, Xiaoli 2 ; Li, Shujun 1 ; Fu, Zhongjun 1 ; Tang, Ling 1 ; Qi, Zhiyun 1 ;
作者机构: 1.Chongqing Acad Agr Sci, Chongqing, Peoples R China
2.China Agr Univ, Coll Agron & Biotechnol, Beijing, Peoples R China
关键词: Zea mays L.; Heat stress; Kernel number; Kernel weight; Flowering dynamics
期刊名称:AGRICULTURAL AND FOREST METEOROLOGY ( 影响因子:4.651; 五年影响因子:5.142 )
ISSN: 0168-1923
年卷期: 2021 年 303 卷
页码:
收录情况: SCI
摘要: High temperature around flowering and early grain filling greatly reduced maize yield. Hybrids responded differently to high temperature stress, but the underlying mechanisms are unclear, particularly from the perspective of growth season that is widely used to adapt different environments. For this, 162 maize inbred lines with different growing degree days (GDD) were planted at six different environments by adjusting sowing date over four years of 2015 - 2018, including two control treatments and four high temperature treatments during flowering and early grain filling. Yield was significantly positively correlated with GDD but negatively correlated with killing degree days (KDD) across six environments. Daily maximum temperature during flowering and early grain filling was a more important determinant of yield (R-2 = 0.689) than solar radiation (R-2 = 0.265) and precipitation (R-2 = 0.288). Grain yield significantly reduced at high temperature mainly as a result of reduced kernel number per ear (KN/ear). KN/ear was reduced by 11 - 100% among inbred lines at heat stress, and the reductions followed the similar pattern for inbred lines that had different GDDs. Based on GDD, 162 inbred lines were divided into short - (SS) and long - season (LS) groups. Kernel number reductions (% / degrees C) in SS and LS groups were 14.4 and 12.0, respectively, with significant difference between groups. This revealed that long - season maize lines showed a higher heat tolerance than short - season lines in kernel number formation by maintaining a relatively stable anthesis - silking interval. SS maize was more tolerant to heat stress during early grain filling than LS maize in kernel weight development due to a shorter exposure to heat stress. It is feasible to select of or breed for heat tolerant maize in different regions where maize has different growth seasons. A proper sowing date, along with heat tolerant hybrids should be considered to offset the adverse effects of warming climate.
- 相关文献
作者其他论文 更多>>
-
From the floret to the canopy: High temperature tolerance during flowering
作者:Liu, Mayang;Zhou, Yuhan;Sun, Jiaxin;Mao, Fen;Yao, Qian;Li, Baole;Liao, Shuhua;Wang, Pu;Huang, Shoubing;Wang, Yuanyuan;Gao, Yingbo;Dong, Xin
关键词:high temperature; seed set; floret organs; flowering pattern; pollination
-
Metabolomic and transcriptomic analyses reveal the effects of grafting on blood orange quality
作者:Yang, Lei;Wang, Min;Hou, Huifang;Li, Shuang;Yang, Haijian;Wang, Wu;Hong, Lin;Chen, Yang;Guan, Ling
关键词:blood orange; flavonoids; pigmentation; gene expression; quality improvement
-
Development of high-oil maize haploid inducer with a novel phenotyping strategy
作者:Liu, Chenxu;Li, Jinlong;Chen, Ming;Li, Wei;Zhong, Yu;Dong, Xin;Xu, Xiaowei;Chen, Chen;Tian, Xiaolong;Chen, Shaojiang;Dong, Xin
关键词:Doubled haploid; Marker-assisted selection; Kernel oil content; Haploid identification; Haploids per ear
-
Transcriptional and physiological data revealed cold tolerance in a photo-thermo sensitive genic male sterile line Yu17S
作者:Pan, Xiaoxue;Guan, Ling;Lei, Kairong;Li, Jingyong;Zhang, Xianwei
关键词:PTGMS lines; Chilling stress; Transcriptional profiles; Carotenoid biosynthesis; Abscisic acid biosynthesis
-
Dissecting heat tolerance and yield stability in maize from greenhouse and field experiments
作者:Liu, Mayang;Sheng, Dechang;Liu, Xiaoli;Wang, Yuanyuan;Hou, Xinfang;Wang, Yuqi;Wang, Pu;Huang, Shoubing;Guan, Ling;Dong, Xin
关键词:extreme heat; maize; pollen; silk; yield stability
-
Exploring the diversity of the fungal community in Chinese traditional Baijiu daqu starters made at low-, medium- and high-temperatures
作者:Zhou, Qingfeng;Ma, Kang;Song, Yang;Wang, Ziwei;Cui, Mingfang;Tang, Ning;Xing, Xiaolong;Fu, Zhongjun;Wang, Yuhong;Zhang, Xiaoyu
关键词:Fungal community; Daqu starter; Temperature; High-throughput sequencing
-
Heat stress on maize with contrasting genetic background: Differences in flowering and yield formation
作者:Liu, Mayang;Dong, Xin;Zhang, Yingjun;Gu, Mingqi;Yu, Yonghong;Xie, Hejing;Huang, Shoubing;Yang, Hua;Yu, Xueyuan
关键词:Zea mays L; Kernel number; Kernel weight; ASI; Yield