“湘油5号”(原名73—2),系我所1970年春用1074作母本,306作父本通过品种间杂交,经过两次单株,一次少数优良单株混选育成的早熟甘兰型油菜新品种。1972年参加品比试验,产量居供试品系第一位,亩产322斤,比对照湘油2号增产11.5％。1973年参加全省区试,12个单位试验结果,亩产172.0—356.4斤,比对照湘油2号增产 “Xiangyou 5” (formerly 73-2), the Department of I am in the spring of 1970 with 1074 as the mother, 306 as a male parent through the cross between varieties, after two single plants, once a few fine hybrid strains bred early sweet New rapeseed varieties. In 1972 to participate in the ratio test, the yield of the test line of the first, 322 kg per mu, compared with the control of Hunan Oil 2 yield 11.5%. In 1973 to participate in the province’s district test, 12 units test results, 172.0-356.4 kg per mu, compared with the control Xiangyou 2 yield