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Adaptation of Diverse Maize Germplasm to Spring Season Conditions in Northeast China

文献类型： 外文期刊

作者： Li, Yi 1 ; Yang, Zhiyuan 1 ; Shao, Yong 4 ; Jin, Zhenguo 4 ; Gao, Li 4 ; Yu, Yang 5 ; Zhang, Fengyi 1 ; Zhang, Yuxing 1 ; Nan, Yuantao 4 ; Li, Mingshun 1 ; Zhang, Degui 1 ; Hao, Zhuanfang 1 ; Weng, Jianfeng 1 ; Li, Xinhai 1 ; Yong, Hongjun 1 ;

作者机构： 1.Chinese Acad Agr Sci, Inst Crop Sci, State Key Lab Crop Gene Resources & Breeding, Natl Key Facil Crop Gene Resources & Genet Improve, 12 Zhong Guan Cun South St, Beijing 100081, Peoples R China

2.Chengde Acad Agr & Forestry Sci, Chengde 067000, Peoples R China

3.Hexi Univ, Dept Capital Construct & Logist Management, 846 North Ring Rd, Zhangye 734000, Peoples R China

4.Heilongjiang Acad Agr Sci, Suihua Branch, Suihua 152052, Peoples R China

5.Heilongjiang Acad Agr Sci, Crop Cultivat Inst, Harbin 150086, Peoples R China

关键词： maize population; general combining ability; specific combining ability; Northeast China

期刊名称：AGRONOMY-BASEL （ 影响因子：3.4； 五年影响因子：3.8 ）

ISSN：

年卷期： 2025 年 15 卷 1 期

页码：

收录情况： SCI

摘要： Northeast China (NEC) is a major spring maize (Zea mays L.) growing belt, and the outputs substantially influence national grain production. However, the maize grain yield per unit area has little changes in recent years, partially due to the lack of elite germplasm resources and innovation. Therefore, this study aimed to determine the performance of diverse populations in NEC to propose appropriate strategies for the utilization of elite germplasm to broaden the genetic base of Chinese germplasm. Fifteen diverse maize populations from the International Maize and Wheat Improvement Center (CIMMYT) and the U.S. were crossed to two local tester lines, representing Chinese heterotic groups Reid and Lancaster, for evaluating the combining ability and heterosis in three locations (Gongzhuling, Jilin Province, and Harbin and Suihua, Heilongjiang Province) in NEC over two years. The U.S. (BS13(S)C7 and BS31) and Chinese (Ji Syn A) populations exhibited more favorable alleles for high yield potential in all locations tested. Furthermore, the PH6WC x BS31 and PH6WC x Ji Syn A crosses had higher grain yields, and an appropriate number of days to silking, ear height, and resistance to lodging at Gongzhuling and Harbin in NEC. The best strategies for utilizing these diverse germplasms may be to develop new inbred lines from the existing elite populations or improve the grain yield and resistance to lodging of the elite line PH4CV for broadening the genetic base of the Chinese group Lancaster in NEC.

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