【摘要】 以二棱大麦品种间杂交种F₁（2n=2x=14）为母本,以苏联球茎大麦（2n=4x=28）为父本,进行种间杂交,授粉一天后。在母本柱头滴赤霉酸（GA₃）,并结合离体培养杂种幼胚,获得较多二棱大麦与球茎大麦的种间杂种,根据杂种植株形态和染色体组成,可分成三种类型,其中只有约5％的植株的染色体加倍成功,为大麦型（2n=14）;其余95％植株的形态表现为偏大麦型与偏球茎型的两种中间型,且均为具球茎的多年生习性;其染色体数在15—21之间:目交不育,用父母本回交亦未结实。更多还原

【Abstract】 A study on barley hybridization had been carried out using Some hybrids between varieties of H.distichum(2n = 2x = 14)as the female parent and H.bulbosum USSR(2n=4x = 28)as the male parent.By culturing in vitro young embryos which had been treated with GA3 on stigmas one day after pollination,we had obtained relatively large number of hybrids.According to morphology,these hybrids might be classified into three types,in only about 5% of the plants,chromosome doubling(2n = 14)had taken place,those were of the barley type,about 95% were of the two intermediate types,H.distichum-like andd H.bulbosum-like types.These two intermediate types were perennial with bulbs.The chromosome number of them was 15-21(triploid).They were self-sterile and did not bear grain when they were backcrossed to either parent.更多还原