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《Grassland of China》 2004-05
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Studies on the Biological and Agronomic Characters of Elymus dahuricus,Hordeum brevisubulatum and Their Hybrid F_1 and BC_1F_1.

LI Zao-zhe, YU Zhuo, MA Qing-zhi, WANG Jun-jie (Inner Mongolia Agricultural University, Hohhot 010019, China)  
The biological and agronomic characters of Elymus dahuricus, Hordeum brevisubulatum and their hybrid F_1 and BC_1F_1 were studied. The results showed that Hordeum brevisubulatum developed rapidly, flowered and bore fruits earlier,the period of vegetative growth was longer, growing and developing period was 74 days,growing period was as long as 206 days, tillering ability was strong.Elymus dahuricus developed slowly, growing and developing period was 124 days, growing period was 193 days.The growing period of hybrid F_1 was between Elymus dahuricus and Hordeum brevisubulatum,growth dynamics tended to Elymus dahuricus,tillering ability was between Elymus dahuricus and Hordeum brevisubulatum.BC_1F_1 developed earlier than F_1,there were differences in growing periods among BC_1F_1 lines; growth dynamics tended to recurrent parent Hordeum brevisubulatum;the tillering ability of BC_1F_1 was varied greatly. Hybrid F_1 had strong hterosis.The yield of BC_1F_1 was lower than that of F_1, there were significant differences in the yield among BC_1F_1 lines; basically the production performance of BC_1F_1 tended to recurrent parent Hordeum brevisubulatum.
【Fund】: 国家自然科学基金项目(30260074);; 内蒙古农业大学博士科研启动基金项目(BJ01_2)资助
【CateGory Index】: S54
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