安徽农业科学2016，Vol.44Issue(16)：20-22,34,4.
8种大花蕙兰耐热性指标筛选及其评价
Heat Resistance Indexes Identification and Comprehensive Evaluation of 8 Species of Cymbidium hybridium
摘要
Abstract
Objective] The aim was to screen out and evaluate heat resistance indexes of Cymbidium hybridum. [Method] With 1 year old seed-lings of 8 C. hybridum as test materials, the change of heat injury index, chlorophyll content, Fv/Fm and F0 under 40/30 ℃ temperature was observed. The data was treated by correlation analysis for their comprehensive evaluation of heat tolerance and effective heat resistance index. [ Result] The results showed that①chlorophyll a, chlorophyll b, Fv/Fm decreased with the extension of treatment time;②Fv/Fm of Jinyuman-tang and Make decreased in small scale and recovered to 90% of the initial value quickly as the temperature returned, which had the strongest hardiness;Funiang and Xiunv had the worst hardiness;③The heat resistance of 8 varieties of C. hybridium from strong to weak were:Jinyuman-tang, Make, Yuchan,UFO, Hongxia, Huangjinsuiyue, Xiunv, Funiang. [Conclusion] The correlation coefficient of Fv/Fm and heat damage in-dex is 0. 946, which can be used as one of the reliable indexes of heat tolerance variety of C. hybridium.关键词
大花蕙兰/耐热性/筛选/评价Key words
Cymbidium hybridum/Heat resistance/Screening/Evaluation分类
农业科技引用本文复制引用
周桂英,王四清,许建新,陈卿然,马川..8种大花蕙兰耐热性指标筛选及其评价[J].安徽农业科学,2016,44(16):20-22,34,4.基金项目
广东省省级科技计划项目(2015B090904008) （2015B090904008）
广东省软科学研究计划项目(2014B090903015) （2014B090903015）
广东省生态环境建设与保护(铁汉)工程技术研究中心项目[粤科函政字(2013)1589号]。 （铁汉）
