光皮树叶片解剖结构与树体生长势的相关性

Correlation of anatomical structure of leaves and growth vigor in Cornus wisoniana

为给光皮树矮化砧木的预选和鉴定提供参考依据,以光皮树实生砧木为试材,采用田间调查法和石蜡切片法,对砧木树体生长量和叶片解剖结构指标的相关性进行了分析研究。结果表明:砧木的株高和地径呈显著正相关关系;地径与海绵组织呈显著的正相关关系;节间长度与叶片组织结构紧密度(CTR)呈显著的负相关关系,与叶片组织结构疏松度(SR)呈极显著的正相关关系,与栅海比呈极显著的负相关关系,而与其它组织结构指标之间无相关性。

In order to provide reference for primary election and identification of dwarf stock in Cornus wisoniana,taking seedling stocks as materials,correction between the anatomical structure indexes of leaves and increment was studied using field investigation and paraffin section methods.The results showed that the correlation between height and ground diameter was positive.The correlation between ground diameter and thick of sponge tissue was positive.The correlation between length of internodes and CTR was negative,but that between length of internodes and SR was positive.The correlation between length of internodes and ratio of sponge tissue to stockade tissue was negative.There were no correlation between other indexes.