甘蓝型油菜隐性上位互作核不育双低杂交种"皖油18"的选育

皖油18(原代号7C24)是利用隐性上位互作核不育育成的第3个强优势甘蓝型油菜杂交种,2002年通过全国品种审定.该组合一般较秦油2号(对照,双高杂交种)增产8%～10%左右,较中油821(对照,双高常规种)增产15%左右;抗寒抗倒耐肥,抗(耐)病性优于秦油2号和中油821,全生育期225 d左右,较秦油2号早3～4 d,较中油821迟1～2 d;1999～2000年度全国区试抽测皖油18含油量为43.04%,芥酸含量为4.92%,硫甙含量为28.54 μmol/g;皖油18丰产稳产性好,地区适应性广,株型合理,经济系数高,是一个综合性状突出的双低杂交种,适宜在长江中下游广大地区种植.

The Breeding of the Recessive Epistatically Genic Male Sterile Hybrid Rapeseed--Wanyou 18 with Double Low

New rapeseed combination-Wanyou 18(Brassica napus), the third hybrid with strong heterosis in B. napus by recessive epistatic GMS, was examined and approved by the State Variety Commission in 2002. The yield of Wanyou 18 was about 8%-10% higher than that of Qinyou 2 and about 15% higher than Zhongyou 821. Wanyou 18 had higher resistance to diseases than Qinyou 2 and Zhongyou 821, high resistance to cold and stalk leaning and good fertilizer tolerance. The growth duration of Wanyou 18 was about 225 days, which were 3-4 days shorter than Qinyou 2 and 1-2 days longer than Zhongyou 821. The content of oil was 43.04%; erucic acid, 4.92% and glucosinolate, 28.54 umol/g meal. In a word, Wanyou 18 was a double low rapeseed hybrid with good integrated agronomic characters, which was with high yield, stable yield, extensive adaptability, good planting pattern and high economic coefficient. It was suitable for planting in the middle and lower reaches of Yangtze River.