果树学报2012，Vol.29Issue(2)：205-211,7.
基于早实核桃不同品种叶片组织结构的抗寒性划分
Cold resistance division based on leaf tissue structure of early-fruiting walnut cultivars
摘要
Abstract
To study cold resistance of early-fruiting walnut cultivars, 14 early-fruiting varieties were used as experimental materials, and 10 leaf tissue structure indexes were observed by using blotting methods and paraffin section methods. Leaf tissue structure indexes were screened via coefficient of variation, analysis of correlation and hierarchical cluster analysis, and comprehensive evaluation on cold resistance for each variety was done by subordinate function. The results showed that leaf thickness, stomata density and the ratio between palisade tissue and spongy tissue were the main factors related to the hardiness ;the cold resistance for 14 cultivars was in order of Xilin No. 2〉Chico〉Wen185〉Vina〉Chandler 〉Liaohe No. 3〉 Tulare 〉Luguang〉Liaohe No.4〉Xifu No. 2〉Zhonglin No. 5〉Xiangling〉Xilin No. 3〉Liaohe No. 1;ac- cording to the cold hardiness, the cultivars could be divided into 5 groups： Xilin No. 2 with high cold re- sistance; Chico and Wen185 with cold resistance ; Chandler, Vina, Luguang, Tulare, Liaohe No. 3 and Liaohe No.4 with medium cold resistance ;Xifu No. 2, Zhonglin No. 5 and Liaohe No. 1 with low cold-tol- erance; Xiangling and Xilin No. 3 without cold resistance.关键词
早实核桃/叶片组织结构/抗寒性/综合评价Key words
Early-fruiting walnut/Leaf tissue structure/Cold resistance/Comprehensive evaluation分类
农业科技引用本文复制引用
刘杜玲,张博勇,彭少兵,朱海兰,刘淑明,杜婷..基于早实核桃不同品种叶片组织结构的抗寒性划分[J].果树学报,2012,29(2):205-211,7.基金项目
陕西省农业攻关项目 （）
国家林业局黄土高原林木培育重点实验室项目 （）
