摘要
以慈竹和撑绿杂交竹为材料,对四川雅安地区不同海拔2竹种叶片进行净光合速率测定,并对采取的竹叶的POD活性、可溶性蛋白和可溶性糖含量、MDA含量、脯氨酸含量以及光合色素进行测定和分析,目的在于探讨慈竹和撑绿杂交竹耐低温的生理机制。结果表明,海拔对慈竹和撑绿杂交竹的POD酶活性、可溶性蛋白含量、脯氨酸含量和可溶性糖含量的影响较大,对MDA含量影响不大。低海拔时,撑绿杂交竹具有高的可溶性蛋白含量和脯氨酸含量,慈竹的POD酶活性和可溶性糖含量很高。高海拔时,慈竹的POD酶活性、可溶性蛋白含量、脯氨酸含量和可溶性糖含量都比撑绿杂交竹高,且差异都达到极显著水平,这可能是慈竹净光合速率极显著高于撑绿杂交竹的一个原因,其中可溶性蛋白含量和脯氨酸含量对慈竹具有高净光合速率可能起到很大调节作用。低海拔慈竹和撑绿杂交竹的净光合速率无明显差异,而高海拔慈竹的净光合速率却远高于撑绿杂交竹。慈竹在高海拔的适应性比撑绿杂交竹的强,撑绿杂交竹不适宜在高海拔栽培。
In order to study the physiological mechanism of low temperature resistance of Neosinocalamus affinis and B.peruariabilis × D.lamopsisdaii from different elevation of Yaan in Sichuan province.Their photosynthetic rate,POD activity,soluble protein content and soluble sugar content,MDA content,proline content and photosynthetic pigments were studied.The results showed that the elevation exerted obvious effects on their POD activity,soluble protein content,proline content,soluble sugar content and photosynthetic,but no effects on their MDA content.At lower elevations,the high soluble protein content and proline content were detected in B.peruariabilis × D.lamopsisdaii,and the high POD activity and soluble sugar content were detected in Neosinocalamus affinis,and the photosynthetic rate between Neosinocalamus affinis and B.peruariabilis × D.lamopsisdaii was similar.At higher elevations,the POD activity,soluble protein content,proline content,soluble sugar content from Neosinocalamus affinis were higher than those of B.peruariabilis × D.lamopsisdaii.It could be the reason that the photosynthetic rate of Neosinocalamus affinis was higher than that of B.peruariabilis × D.lamopsisdaii.The regulation effects of soluble protein and proline content on the high photosynthetic rate of Neosinocalamus affinis might exist.At higher elevation,the adaptability and low temperature resistance ability of Neosinocalamus affinis are stronger than those of B.peruariabilis × D.lamopsisdaii and it is not suitable to plant B.peruariabilis × D.lamopsisdaii.
出处
《竹子研究汇刊》
北大核心
2011年第2期43-47,共5页
Journal of Bamboo Research
基金
国家科技支撑计划课题(2008BADC2B02)
四川省"十一五"重点攻关项目(2006YZGG-10-07)
关键词
大型丛生竹
自然条件
耐低温能力
Giant sympodial bamboo Natural conditions Low temperature resistance ability
