高温胁迫对观赏海棠形态和生长的影响  

Effects of high temperature stress on morphology and growth of crabapple varieties

作　　者：刘春风[1] 刘少轩[1] 谢寅峰[1] 张往祥[1] 

机构地区：[1]南京林业大学森林资源与环境学院,南京210037

出　　处：《林业科技开发》2013年第3期42-45,共4页China Forestry Science and Technology

基　　金：江苏省科技厅科技支撑项目"欧美观赏海棠新品种快繁技术集成与栽培示范"(编号:BE2010338);江苏省农业自主创新项目"耐热型园林用海棠和杜鹃新品种选育"(编号:cx[12]2043)

摘　　要：田间观测8个海棠品种的苗木形态和生长情况。结果表明:高温胁迫下,不同品种田间的形态和生长表现差异显著。耐热性强的品种始终保持较快的苗高和地茎生长速率;耐热性差的品种苗高、地茎的生长速率缓慢。海棠田间的形态表现和苗高生长速率的大小可以作为耐热性的评价指标。8个海棠品种均能在试验地安全越夏,耐热性由强到弱排列顺序为:B10>B4>B5>B7>B19>A2>B9>A4。The morphology and growth of eight crabapple varieties graft plant in the field were observed and measured. Re- suits showed that the morphology and growth of different varieties in the field were significant difference under high tempera- tures stress. Varieties that had strong heat resistance remained faster height and stem growth rate, while varieties that had poor heat resistance showed very small height and stem growth rate. Morphologie expression and plant height growth rate could be used as heat resistant evaluation index. Eight crabapple varieties, which were safe in the summer experimental field, were ranked as follows： BIO 〉 B4 〉 B5 〉 B7 〉 B19 〉 A2 〉 B9 〉 A4.

关 键 词：海棠 高温胁迫 形态 生长 

分 类 号：S642.2[农业科学—蔬菜学]