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甘蓝型油菜的抗裂角性鉴定及品种筛选

DOI: 10.7668/hbnxb.2009.06.046, PP. 223-226

Keywords: 油菜,品种筛选,抗裂角指数,机械化收获

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Abstract:

油菜生产效益的提高有赖于机械化进程的推进,而机械化收获要求油菜品种具有较强的抗裂角性.为明确我国最新育成的油菜杂交种(或品系)对机械化收获的适应性,以改进后的随机碰撞法对2008年参加湖北省和全国长江中游区油菜品种区试的50份甘蓝型油菜进行了抗裂角性鉴定.结果表明,抗裂角指数为0.020~0.70,对照品种中油杂2号的抗裂角指数为0.218,大致处于中间值.将抗裂角指数范围分为:>0.,0.3~0.,0.2~0.3,0.1~0.2及<0.1五个区域,被鉴定的50份甘蓝型油菜在这5个区域的分布频数分别为5,5,10,17和13个,表明我国最近育成的油菜杂交种(或新品系)的抗裂角性存在较大的差异,有望通过筛选获得适合机械化收获的品种.对抗裂角指数较高的10份材料的产量和品质性状进一步分析,筛选出了三北98、中油112等2个通过了区试并获得审定、具有适合机械化收获性状的油菜新品种,可以直接推广利用.

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