JIA-2021-1156 小麦背景下冰草2P染色体易位片段的遗传效应

doi:10.1016/j.jia.2022.08.094

Journal of Integrative Agriculture ›› 2023, Vol. 22 ›› Issue (1): 52-62.DOI: 10.1016/j.jia.2022.08.094

JIA-2021-1156 小麦背景下冰草2P染色体易位片段的遗传效应

收稿日期:2021-07-06 接受日期:2021-09-28 出版日期:2023-01-20 发布日期:2021-09-28

Genetic effects of Agropyron cristatum 2P chromosome translocation fragments in wheat background

XU Shi-rui^1*, JIANG Bo^2*, HAN Hai-ming¹, JI Xia-jie¹, ZHANG Jin-peng¹, ZHOU Sheng-hui¹, YANG Xin-ming¹, LI Xiu-quan¹, LI Li-hui¹, LIU Wei-hua¹

¹National 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

Received:2021-07-06 Accepted:2021-09-28 Online:2023-01-20 Published:2021-09-28
Contact: Correspondence LIU Wei-hua, Tel: +86-10-62176077, Fax: +86-10-62189650, E-mail: liuweihua@caas.cn
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.
Supported by:
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).

摘要/Abstract

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.

Key words: wheat-A. cristatum 2P chromosome translocation lines , flag leaf , spikelet density , genetic effects

. JIA-2021-1156 小麦背景下冰草2P染色体易位片段的遗传效应[J]. Journal of Integrative Agriculture, 2023, 22(1): 52-62.

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. Genetic effects of Agropyron cristatum 2P chromosome translocation fragments in wheat background[J]. Journal of Integrative Agriculture, 2023, 22(1): 52-62.

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JIA-2021-1156 小麦背景下冰草2P染色体易位片段的遗传效应

Genetic effects of Agropyron cristatum 2P chromosome translocation fragments in wheat background

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