核桃叶片解剖结构与生长势的关系

Study on the Relationship Between the Anatomical Structure of Leaves and the Growing of Walnut

旨在为核桃矮化性的鉴定及矮化砧的预选提供理论依据,以核桃不同品种6年生嫁接树和3年生实生树为试材,研究了叶片解剖结构与生长势的关系。结果表明:不同品种的核桃嫁接树叶片结构与树体生长势没有明显的相关性,不同品种的核桃实生树叶片结构与生长势有一定的相关性。栅栏组织厚度与干周生长量显著负相关;海绵组织厚度与株高生长量显著正相关;栅海比与株高生长量极显著负相关,与干周生长量、株高、干周显著负相关;叶片气孔密度与株高生长量极显著正相关,与干周生长量、株高、干周显著正相关。叶片栅海比及气孔密度可作为核桃实生苗预测生长势强弱的指标。

The six years walnut（ Juglans regia L. ）cuhivars and three years seedlings were used as material to study the relationship between the anatomical structure of leaves and growth vigor of walnut in the same year. The results indicated that the anatomical structure of leaves of different walnut cuhivars had insignificant correlation with the growth vigor. But the anatomical structure of leaves of different walnut seedlings had significant correlation with the growth vigor. The thickness of palisade tissue had strikingly negative relationship with the increment of trunk girth. The thickness of spongy tissue had positive significant correlation with the increment of tree height. Palisade/Spongy had bally significantly negative correlation with the increment of tree height and had strikingly negative relationship with the increment of trunk girth, tree height and trunk girth. The density of stomata had bally strikingly positive relationship with the increment of tree height and had strikingly negative relationship with the increment of trunk girth, tree height and trunk girth. The density of stomata and palisade/spongy of leaves can be used for forecasting the growth vigor of walnut seedling.