甘蓝型油菜高产双低三系杂交种川油33的选育

川油33为甘蓝型油菜细胞质雄性不育（CMS）高产双低杂交新品种，原品种代号为杂-9，不育系为JA8，保持系为JB8，恢复系为JR8。川油33杂交优势强，综合性状好，双低品质优，丰产性突出，产量高，含油量高，熟期适中，适应性广，抗（耐）病性强。在四川省油菜新品种区域试验中，2003年8个试验点平均产量 2350.5 kg/hm2 ，比对照蜀杂6号增产12.58%（极显著）；2004年9个试验点平均产量 2314.5 kg/hm2 ，比对照蜀杂6号增产 9.98%（极显著）。在2003~2004年度组织五点（成都、绵阳、什邡、南充和内江）生产试验，平均产量 2200.5 kg/hm2，比对照蜀杂6号增产 16.2%（极显著）。杂交种子芥酸 0.1% ，硫甙 22.89 μmol/g 饼，含油率（干基）40.81% 。商品菜籽芥酸 1.02% ，硫甙 27.82 μmol/g 饼，含油率（干基）39.0%。中抗病毒病和菌核病。平均全生育日数215 d，比CK蜀杂6号早熟1~2d。2004年10月通过四川省农作物品种审定委员会审定，并被列为四川省主推品种。

Breeding of High-yield and Double-low Rapeseed Hybrid (Brassica napus L.) Chuanyou No.33

Chuanyou No.33, a double-low and high-yield CMS rapeseed hybrid ( Brassica napus L.), whose former name was ZA-9, was developed from JA8( double-low POL CMS system ) × JR8( a double-low restorer ). Chuanyou No.33 showed great hybrid superiority. The cultivar possessed the characteristics of desired agronomic quality, double-low, high yield, high oil content, early maturity, wide adaptability and acceptable resistance( tolerance ) to virus and S. sclerotiorum. In the regional tests of Sichuan, the average yield of Chuanyou No.33 was 2350.5 kg/hm2, which outyielded the control Shuza No.6 by 12.58% in 2003, with a high significance. The average yield of Chuanyou No.33 was 2314.5 kg/hm2, which outyielded the control Shuza No.6 by 9.98% in 2004, with a high significance. In the five-regional productive test , the average yield of Chuanyou No.33 was 2200.5 kg/hm2, which outyielded the control Shuza No.6 by 16.2% in 2003-2004, with a high significance . In hybrid seed F1, its erucic acid content was 0.1% in oil, glucosinolates content was 22.89 μmol/g in meal, and oil content was 40.81% in dry base. In commodity seed F2, its erucic acid content was 1.02% in oil, glucosinolates content was 27.82 μmol/g in meal, and oil content was 39% in dry base. Its resistance (tolerance) to virus and S. sclerotiorum was very stronger. The growth period of Chuanyou No.33 was 215 days, which was 1~2 days shorter than Shuza No.6, averagely. It was released by Sichuan Crop Variety Approval Committee in October 2004 and recommended to be the main popularized variety in Sichuan province.