Possible origin of Triticum petropavlovskyi based on cytological analyses of crosses between T-petropavlovskyi and tetraploid, hexaploid, and synthetic hexaploid (SHW-DPW) wheat accessions

文献类型： 外文期刊

第一作者： Song, Jun

作者： Song, Jun;Du, Wen-Ping;Xu, Li-Yuan;Yu, Gui-Rong;Chen, Qian

作者机构：

关键词： tetraploid wheat;hexaploid wheat;seed set;fertility of hybrids;c-value;meiotic pairing configuration

期刊名称：SPANISH JOURNAL OF AGRICULTURAL RESEARCH （ 影响因子：1.238； 五年影响因子：1.731 ）

ISSN： 1695-971X

年卷期： 2016 年 14 卷 4 期

页码：

收录情况： SCI

摘要： Intraspecific hybridization between Triticum petropavlovskyi Udacz. et Migusch., synthetic hexaploid wheat (SHW-DPW), and tetraploid and hexaploid wheat, was performed to collect data on seed set, fertility of F-1 hybrid, and meiotic pairing configuration, aiming to evaluate the possible origin of T. petropavlovskyi. Our data showed that (1) seed set of crosses T. petropavlovskyi x T. polonicum and T. petropavlovskyi x T. aestivum cv. Chinese Spring was significantly high; (2) fertility of hybrids T. petropavlovskyi x T. polonicum and T. petropavlovskyi x T. aestivum ssp. yunnanense was higher than that of the other hybrids; (3) fertility of F1 hybrids SHW-DPW x T. dicoccoides and SHW-DPWxT. aestivum ssp. tibetanum was significantly high; and (4) c-value of T. petropavlovskyi x T. polonicum and T. petropavlovskyi x T. aestivum cv. Changning white wheat was also significantly high. The results indicate that the probable origin of T. petropavlovskyi is divergence from a natural cross between T. aestivum and T. polonicum, via either spontaneous introgression or breeding effort.

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