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品种来源:临农20号(原代号:73—0133)系甘肃省定西地区临洮农校1969年用株系660(S+B)～.5.1[即欧柔×(阿勃×阿桑)]为母本,株系65L_2D_2—1215即(临农2号×丹麦2号)为父本进行杂交,于1980年育成。经1987年5月甘肃省农作物品种审定
Source: Linnong 20 (original code: 73-0133) Department of Gansu Province Dingxi Linqu Agricultural School in 1969 with lines 660 (S + B) ~ .5.1 [Or soft × (Abercrombie and fitch) as The female parent, line 65L_2D_2-1215 (Linnong 2 × Denmark 2) was crossed with the male parent and was bred in 1980. After the May 1987 crop varieties in Gansu Province validation