Comparison of Leaf Microstructure between Two Apple Cultivars with Different Resistance to Brown Spot Disease
Kong Xianghua
Zhang Wei
Hou Dongliang
Tian Yike
Yang Shaolan
Xiao Yuxiong
Abstract：Apple brown spot disease mainly damages leaves which can lead to earlier defoliation and result in serious effects on apple tree growth and yield.Breeding resistant apple cultivars is the final way to solve this problem.Qinguan and Fuji are two main cultivars in apple production currently with great difference on resistant level to this disease.The leaf structure of the resistant cultivar Qinguan and the susceptible cultivar Fuji were observed by the method of scanning electron microscopy and paraffin.Compared with Qinguan, the leaf surface of Fuji in front and back side was much rougher, and the cuticle thickness was smaller, moreover, the stoma density was significantly larger.It was speculated that the different resistance to apple brown spot disease of these two cultivars might derived from their different structure characters in leaves.
Keywords：AppleResistance to brown spot diseaseLeafMicrostructure
Publication Date：2017-01-01
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：4( 38-41 )