摘要
2012年以7个引种的核桃品种1年生苗叶片为研究对象,以云南地方品种漾濞泡核桃为对照,通过测定分析自然低温变化胁迫下膜透性、丙二醛和脯氨酸含量及变化情况,对8个核桃品种的抗寒性进行了初步研究。结果表明,温度降低后,3个生理指标皆呈上升趋势,但不同指标上升的幅度不同,同一指标中不同品种上升的幅度也各不相同。综合分析3个生理指标变化情况,8个参试品种(含对照)的抗寒性,Buccaneer和Axel较强;Coenen,Parisienne,Hanson和漾濞泡核桃次之;Lara和Fernette较差。
Taking seedlings of 7 introduced walnut cultivars and 1 local cultivar as samples, preliminary assess- ment on their cold tolerance was conducted through analyzing 3 physiological and biochemical indexes under natural cold stress. The results showed that with the decrease of natural temperature, 3 indexes namely relative electrical conductivity, MDA and proline content tended to increase. However, the increase extents were different among the cuhivars. Based on comprehensive analysis of all 3 indexes, 8 cultivars were divided into 3 groups according to their cold tolerance. The group I with 2 introduced cuhivars Buccaneer and Axel showed high cold tolerance, next came group 1I with 4 cuhivars Coenen, Parisienne, Hanson and Juglans sigillata, and group m with 2 in- troduce cuhivars Lara and Fernette showed the lowest tolerance.
出处
《西部林业科学》
CAS
北大核心
2013年第5期53-56,共4页
Journal of West China Forestry Science
基金
国家林业局"948"项目"荷兰核桃良种及其培育技术引进"(2011-4-28)
关键词
核桃
引种
幼苗
抗寒性
低温胁迫
生理指标
walnut
introduction
seedling
cold tolerance
cold stress
physiological indexes