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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
Journal of Integrative Agriculture, January 2023, 2023-01-00, 2023, 2023-01-01, Volume: 22, Issue: 1Journal Article
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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