Characterization, Identification and Evaluation of Wheat-Aegilops sharonensis Chromosome Derivatives
文献类型： 外文期刊
作者： Wang, Xiaolu 1 ; Yu, Zhihui 4 ; Wang, Hongjin 4 ; Li, Jianbo 1 ; Han, Ran 1 ; Xu, Wenjing 1 ; Li, Guangrong 4 ; Guo, Jun; 1 ;
作者机构： 1.Shandong Acad Agr Sci, Crop Res Inst, Jinan, Peoples R China
2.Minist Agr, Key Lab Wheat Biol & Genet Improvement North Huan, Jinan, Peoples R China
3.Natl Engn Lab Wheat & Maize, Jinan, Peoples R China
4.Univ Elect Sci & Technol China, Sch Life Sci & Technol, Chengdu, Peoples R China
关键词： Aegilops sharonensis; chromosome derivatives; cytogenetic identification; PLUG marker; powdery mildew resistance
期刊名称：FRONTIERS IN PLANT SCIENCE （ 影响因子：5.754； 五年影响因子：6.612 ）
ISSN： 1664-462X
年卷期： 2021 年 12 卷
页码：
收录情况： SCI
摘要： Aegilops sharonensis, a wild relative of wheat, harbors diverse disease and insect resistance genes, making it a potentially excellent gene source for wheat improvement. In this study, we characterized and evaluated six wheat-A. sharonensis derivatives, which included three disomic additions, one disomic substitution + monotelosomic addition and two disomic substitution + disomic additions. A total of 51 PLUG markers were developed and used to allocate the A. sharonensis chromosomes in each of the six derivatives to Triticeae homoeologous groups. A set of cytogenetic markers specific for A. sharonensis chromosomes was established based on FISH using oligonucleotides as probes. Molecular cytogenetic marker analysis confirmed that these lines were a CS-A. sharonensis 2S(sh) disomic addition, a 4S(sh) disomic addition, a 4S(sh) (4D) substitution + 5S(sh)L monotelosomic addition, a 6S(sh) disomic addition, a 4S(sh) (4D) substitution + 6S(sh) disomic addition and a 4S(sh) (4D) substitution + 7S(sh) disomic addition line, respectively. Disease resistance investigations showed that chromosome 7S(sh) of A. sharonensis might harbor a new powdery mildew resistance gene, and therefore it has potential for use as resistance source for wheat breeding.
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