不同品种牡丹几个生理参数的比较及其与组培中褐化的关系  

The Comparison of Physiological Indexes and the Relation with Browning in Tissue Culture about Different Peony Species

作　　者：李新凤[1] 巩振辉[1] 孙冬青[1] 王军娥[1] 

机构地区：[1]西北农林科技大学园艺学院,陕西杨凌712100

出　　处：《西北农业学报》2008年第1期142-145,共4页Acta Agriculturae Boreali-occidentalis Sinica

摘　　要：以8个牡丹品种为试材,对外植体多酚含量、POD活性、CAT活性、MDA含量及其与褐化的关系进行了分析。结果表明,不同品种牡丹间的各个生理指标及其褐化率之间差异显著,同一品种同一部位的不同外植体间各个生理指标及褐化率之间也存在极显著的差异。叶柄的总酚含量、POD活性与褐化率存在着显著的相关性(P=0.0292<0.05,P=0.0186<0.05),相关系数分别为0.6256,-0.7942。叶片的MDA含量与褐化率存在显著的相关性(P=0.0202<0.05),相关系数为0.7980。Polyphenol content, POD activity, CAT activity and MDA content were detected, the correlation of physiological indexes and browning index were analyzed about 8 peony species. The result showed that there was significant difference in different species and in different explants of a species. There was significant correlation between polyphenol content and browning rate in petiole. There was negative correlation between POD activity and browning rate in petiole. In leaf, there was significant correlation between MDA content and browning rate.

关 键 词：牡丹 组织培养 生理指标 褐化 

分 类 号：S685.11[农业科学—观赏园艺]