“双低”油菜品种对比试验初报

【目的】为充分利用一季中稻区的农田资源，并筛选出适合柳州市中稻区特别是中稻蓄留再生稻区推广种植的高产、优质油菜新品种。【方法】以花油3号为对照品种，对引进的11个油菜品种进行田间种植观察。分小区种植，随机区组排列，3次重复，观察测定农艺性状、菌核病发病率、抗倒性和产量等性状。【结果】参试油菜品种的成熟期均较对照迟，全生育期也均较长。除美国油王999成熟期长势不一致外，其余品种苗期、抽薹期、成熟期一致性均较好。川油18号、中双8号和美国油王999抗倒性强，其余品种抗倒性较弱或中等。川油18号和川审油41号千粒重较高，分别为4．06和3．87g。产量较高的品种有川油18号、国审豫油5号、绵油杂11号、川审油41号等。【结论】川油18号、绵油杂11号、川审油41号、国审豫油5号、中油杂8号等5个参试品种综合表现较好，可作为柳州市中稻区冬季种植油菜推广或备选品种。

A comparative experiment on different rapeseed varieties having low erucic acid and glucosinolate content

[Objective]The purpose of the study was to screen high yield and fine quality rapeseed varieties suitable for planting in areas where land is only utilized for the production of single mid-season rice, vis-a-vis to utilize those land resources in Liuzhou, Guangxi （China）. [Method]Eleven rapeseed varieties having low erucic acid and glucosinolate content along with a control variety Huayou 3 were planted in field in randomized block design with three replicates. The agronomic traits, incidence of disease （sclerotinia） and stress resistance （lodging）, yield and some other parameters were investigated. [Result]The duration of growth and maturity stages of all the tested rapeseed varieties were found longer than the control. Except in the variety Meiguoyouwang 999, the uniformity in growth vigor was found very well in all the varieties at seedling, bolting and maturity stages. Chuanyou 18, Zhongshuang 8 and Meiguoyouwang 999 showed strong lodging resistance, while the others were weak or moderate. The weight of 1000-seed in varieties Chuanyou 18 and Chuanshenyou 41 was found highest （4.06 and 3.87 g, respectively）. The varieties Chuanyou 18, Guoshenyuyou 5, Mianyouza 11, Chuanshenyou 41 and Zhongzayou 8 showed higher yields compared to the others. [Conclusion]The results indicated that five varieties, vlz., Chuanyou 18, Mianyouza 11, Chuanshenyou 41, Guoshenyuyou 5 and Zhongzayou 8 performed well in the test, and may be recommended for winter cropping in mid-season rice planting areas.