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作 者 ：叶兴国;樊路;韩敬花

期 刊 ：作物学报 1992年 18卷 06期 页码：447-452

关键词：ph基因系；黑麦；部分同源染色体配对；染色体交叉数；回交；

Keywords:ph lines, S. cereale, Homoeologous pairing, Chiasma frequency, Backcross,

摘 要 ：利用中国春ph1b、ph2a、ph2b基因系及对照中国春分别与甘肃黑麦杂交,结实率分别为94.0％、87.9％、93.8％和90.8％,其F_1减数分裂中期Ⅰ染色体配对交叉数分别为9.748、2.968、5.000和1.376,ph1b、ph2a、ph2b基因诱导小麦与黑麦F_1部分同源染色体配对顺序是ph1b>ph2b>ph2a。用中国春回交F_1取得了成功,回交结实率分别为1.06％

Abstract:‘Gan Su’rye was crossed with ‘Chinese Spring’mutants ph1b、ph2a、ph2b andwith ‘Chinese Spring’ as the control. The seed sets were 94.0%、87.9%、93.8% and90.8%, respectively, indicating no significant difference among them. Chiasma fre-quencies of the F_1 hybrids at meiotic metaphase I were 9.7

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