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| Genetic effects of Agropyron cristatum 2P chromosome translocation fragments in wheat background |
XU Shi-rui1*, JIANG Bo2*, HAN Hai-ming1, JI Xia-jie1, ZHANG Jin-peng1, ZHOU Sheng-hui1, YANG Xin-ming1, LI Xiu-quan1, LI Li-hui1, LIU Wei-hua1
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1 National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, P.R.China
2 Triticeae Research Institute, Sichuan Agricultural University, Chengdu 611130, P.R.China
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摘要 小麦野生近缘植物冰草中蕴含许多对小麦遗传改良有利的基因。小麦-冰草2P异源易位系携带有小旗叶、小穗排列紧密、株型紧凑等特异性状。本文对携带有小麦-冰草不同2P易位片段的易位系及易位系回交群体进行农艺性状调查和遗传分析，结果表明，易位系2PT-3(2PL)易位片段具有促使旗叶长度变小的作用，易位系2PT-3(2PL)、2PT-5(2PL(0.6-1))易位片段具有促使旗叶宽度变小的作用。易位系2PT-13(2PS(0.18–0.36))易位片段具有增加旗叶的长度和面积的作用。易位系2PT-3(2PL)、2PT-8(2PL(0.86-1))易位片段具有促使小穗密度变大的作用。易位系2PT-7(2PL(0.0-0.09))、2PT-8(2PL(0.86-1))、2PT-10(2PS）、2PT-13(2PS(0.18-0.36))易位片段具有降低株高的作用。本研究可为小麦-冰草易位系的有效利用提供科学依据。
Abstract
Agropyron cristatum (2n=4x=28, PPPP) is a wild relative of common wheat which contains a large number of desirable genes that can be exploited for wheat improvement. Wheat–A. cristatum 2P alien translocation lines exhibit many desirable traits, such as small flag leaves, a high spikelet number and density, and a compact plant type. An agronomic trait evaluation and a genetic analysis were carried out on translocation lines and backcross populations of these lines carrying different translocation fragments. The results showed that a translocation fragment from 2PT-3 (2PL) reduced the length of the flag leaves, while translocation fragments from 2PT-3 (2PL) and 2PT-5 (2PL (0.60–1.00)) reduced the width of the flag leaves. A translocation fragment from 2PT-13 (2PS (0.18–0.36)) increased the length and area of the flag leaves. Translocation fragments from 2PT-3 (2PL) and 2PT-8 (2PL (0.86–1.00)) increased the density of spikelets. Translocation fragments from 2PT-7 (2PL (0.00–0.09)), 2PT-8 (2PL (0.86–1.00)), 2PT-10 (2PS), and 2PT-13 (2PS (0.18–0.36)) reduced plant height. This study provides a scientific basis for the effective utilization of wheat–A. cristatum translocation lines.
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Received: 06 July 2021
Accepted: 28 September 2021
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| Fund: This research was supported by grants from the National Natural Science Foundation of China (32272083) and the National Key Research and Development Program of China (2016YFD0100102). |
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Corresponding Authors:
Correspondence LIU Wei-hua, Tel: +86-10-62176077, Fax: +86-10-62189650, E-mail: liuweihua@caas.cn
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| About author: Received 6 July, 2021 Accepted 28 September, 2021
XU Shi-rui, E-mail: xushirui1105@163.com; JIANG Bo, E-mail: jiangbo19880229@163.com; Correspondence LIU Wei-hua, Tel: +86-10-62176077, Fax: +86-10-62189650, E-mail: liuweihua@caas.cn
* These authors contributed equally to this study. |
Cite this article:
XU Shi-rui, JIANG Bo, HAN Hai-ming, JI Xia-jie, ZHANG Jin-peng, ZHOU Sheng-hui, YANG Xin-ming, LI Xiu-quan, LI Li-hui, LIU Wei-hua.
2023.
Genetic effects of Agropyron cristatum 2P chromosome translocation fragments in wheat background. Journal of Integrative Agriculture, 22(1): 52-62.
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