Wheat breeding in the hometown of Chinese Spring

作者：Liu Dengcai^*; Zhang Lianquan; Hao Ming; Ning Shunzong; Yuan Zhongwei; Dai Shoufen; Huang Lin; Wu Bihua; Yan Zehong; Lan Xiujin; Zheng Youliang

来源：Crop Journal, 2018, 6(1): 82-90.

DOI：10.1016/j.cj.2017.08.009

• Introgression
• Multiparent advanced generation inter-cross
• Synthetic hexaploid wheat
• Unreduced gametes

The common wheat landrace Chinese Spring (CS) was made famous by the work of Ernie Sears, a great cytogenetist, who developed a number of CS-based aneuploid series that were used to identify individual wheat chromosomes. Based on this, a standard karyotype and nomenclature system was developed for wheat chromosomes that allowed wheat researchers to analyze and manipulate the wheat genome with unprecedented precision and efficiency. Nevertheless, not much is known about the utilization of CS at its hometown, Chengdu in Sichuan province, during early wheat breeding activity. In this review, we follow the speculation that CS is a selection from the Cheng-du-guang-tou (CDGT) landrace. We provide a description of how CDGT became a founder landrace for wheat breeding activities in early times. We show that CDGT-derived varieties were reinforced genetically by crosses to six more exotic parents. These varieties remained the major elite cultivar for several decades. Later, synthetic hexaploid wheats were introduced into the breeding program, firstly using those from CIMMYT and later using materials produced with local tetraploid wheat and goat grass. Finally, we discuss the strategies and future directions to improve wheat yield and resistance through an expanded genetic basis, especially by recapturing lost genetic variations from landraces and related wild species, a process that may set an example for wheat breeders in China and elsewhere.

• 出版日期2018-2
• 单位四川农业大学