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2008年贵州持续凝冻对油菜的影响
引用本文:林茂,李超,饶勇,王璐璐,杨斌,肖华贵.2008年贵州持续凝冻对油菜的影响[J].安徽农业科学,2008,36(22).
作者姓名:林茂  李超  饶勇  王璐璐  杨斌  肖华贵
作者单位:贵州省油料研究所,国家油菜现代产业技术体系贵州贵阳试验站,贵州贵阳,550006
摘    要:目的]为选育抗冻性强的优质油菜品种提供理论依据。方法]田间调查白菜型、芥菜型、甘蓝型等3种类型油菜的冻害情况,并通过醋酸洋红染色法,分别对3种油菜冻害后的花粉活力作了研究。结果]白菜型油菜和芥菜型油菜都是三级冻害的植株最多,冻害率分别达到41.6%和35.0%,但白菜型油菜四级冻害植株率大于芥菜型油菜。甘蓝型油菜以二级冻害植株为主,冻害率达到41.3%。甘蓝型花粉中具有活力的花粉数最高,81%的花粉具有活力;芥菜型次之,有活力花粉数为78%;白菜型最低,有活力花粉数为61%。结论]3种类型油菜的抗冻性表现为甘蓝型>芥菜型>白菜型。

关 键 词:油菜  冻害  花粉活力

The Influence of Continued Congelation on Rape in Guizhou in 2008
LIN Mao et al.The Influence of Continued Congelation on Rape in Guizhou in 2008[J].Journal of Anhui Agricultural Sciences,2008,36(22).
Authors:LIN Mao
Abstract:Objective] The study aimed to provide a theoretical base for breeding high quality rape with stronger freezing resistance.Method] Freezing injury situation of 3 kinds of rapes(Brassica Napus L,B.juncea,B.campestrics L) were investigated in field.After freezing injury,their pollen viabilities were studied through aceto carmine dyeing.Result] The 3rd grade frozen plants of B.campestrics L and B.juncea were most,being 41.6% and 35% resp..But the 4th grade frozen plants of B.campestrics L were bigger than that of B.juncea.The 2nd grade plants of Brassica Napus L were most and its frozen rate reached 41.3%. The pollen viability of B.campestrics was highest and 81% had pollen viability,that of B.juncea was secondary and 78% had viability and that of B.campestrics L was lowest(61%).Conclusion] The freezing resistance of 3 rapes in order was B.Napus L>B.juncea>B.campestrics L.
Keywords:Rape  Freezing injury  Pollen viability
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