【摘要】 以节节麦（２ｎ＝１４）为母本和大麦（２ｎ＝１４）进行杂交，两组合平均结实率为３１１１％。对１３个幼胚进行愈伤组织诱导培养，其中２个形成全能性愈伤组织进而分化出再生杂种植株。细胞学观察表明，杂种胚再生植株均是染色体加倍的节节麦－大麦双二倍体（２ｎ＝２８）或染色体再加倍的多倍体。节节麦－大麦双二倍体在减数分裂中期Ⅰ染色体配对平均构型为１４７９Ⅰ＋１９５Ⅱ＋４５３Ⅱ＇＋００１Ⅲ，表现为自交不育。杂种胚再生植株染色体数目再加倍的多倍体有少数产生了自交种子。更多还原

【Abstract】 Hybridizations betweenAegilops tauschii(2n=14) andHordeum vulgare (2n=14) were made using Ae. tauschii as female. The mean frequency of seed set was 3111% in two cross combinations, 13 hybrid embryos were cultured for inducing callus, of which 2 produced totipotent callus, and plants were regenerated from them. These plants were Ae. tauschii-H. vulgare amphidiploids with doubling chromosome number (2n=28) and octoploids with repeatedly doubling chromosome number (2n =50～56). The Ae. tauschii-H. vulgare amphidiploids were sterile and their average chromosome pairing at MI were 1479Ⅰ+195Ⅱ+453Ⅱ’+001Ⅲ.Some octoploid (2n =56) plants produced seeds after selfing.更多还原