文献类型：期刊文献

中文题名：印楝种源间抗寒能力比较研究

英文题名：Cold Resistance Analysis of Neem Provenances

作者：廖声熙[1] 张春华[1] 李立[1] 李文良[1] 赵培仙[2]

第一作者：廖声熙

机构：[1]中国林业科学研究院资源昆虫研究所;[2]云南省元谋县林业局

年份：2004

卷号：17

期号：2

起止页码：172-177

中文期刊名：林业科学研究

外文期刊名：Forest Research

收录：CSTPCD;;Scopus;北大核心:【北大核心2000】；CSCD:【CSCD2011_2012】；

基金：云南省自然科学基金资助项目(2000C0027Q);国家"十五"农业科技攻关课题(2001BA606A07);科技部公益研究所专项"干热河谷生态综合整治技术研究与示范

语种：中文

中文关键词：印楝;引种;种源试验;抗寒能力;组织褐变法;电导法;低温寒害地区

外文关键词：neem;provenances;cold resistance;hot-dry valley

分类号：S792.33;S722.7

摘要：通过组织褐变法、膜脂脂肪酸含量分析和电导法配合Logistic方程求拐点温度的方法,对引种的4个种源抗寒力进行研究评价。结果表明:(1)印楝是一种不耐寒的植物,0℃以下的短暂低温可对其嫩叶造成伤害,低于-1℃保持1h即可造成部分幼苗死亡;(2)印楝种源间抗寒能力差异不显著;(3)叶膜脂脂肪酸组成含量与抗寒力大小无明显相关关系;(4)印楝4种源半致死温度分别为-1 651、-1 675、-1 750、-1 682℃。根据上述试验研究和冷冻处理实验结果,4个印楝种源抗寒力大小排序为IND95003>IND95004>IND95001>IND95002,在我国有低温寒害的地区引种印楝应该慎重,在轻霜地区可选择抗寒力稍强的IND95003种源先行试验性引种。
Neem grows well in the hot-dry valley in China, but it is easy to be harmed by cold.The cold resistance of 4 provenances was valued through tissue browning method, membrane fatty acid analysis and the electric conductivity method which Logistic equation was used to determine the inflexion temperature.The results showed that:(1)neem is a plant which has low cold resistance,short cold temperature below 0 ℃ can damage its tender leaves, and 1h temperature below -1 ℃ will lead part of infant seedlings to death; (2) the cold resistant capability has no distinct difference among neem provenances; (3) membrane fatty acid content of leaves has no correlative relation with cold resistance; (4)the medium lethal temperatures of 4 neem provenances are -1.651,-1.675,-1.75,-1.682 ℃.According to the results above-mentioned and the results of freezing experiment, the cold resistance sequence of neem provenances is IND95003>IND95004>IND95001>IND95002.The results showed that it should be careful to import neem to cold zones in China, and IND95003 can be used in the zones with light frost.