西北林学院学报2025，Vol.40Issue(3)：29-35,7.DOI:10.3969/j.issn.1001-7461.2025.03.04
文冠果不同直径枝条去除顶芽对侧芽雌花形成的影响规律
Effect of Top Bud Removal from Branches with Different Diameters on Female Flower Formation of Side Bud in Yellowhorn
摘要
Abstract
As an important woody oil tree species in North China,yellowhorn has important economic value for its rich nervonic acid in oil.However,its yield is low,and the core factor is that the number of female flowers is far less than that of male flowers,which hinders the industrial development.Previous studies on pruning found that removal of top buds could alter the number of female flowers in a branch.Therefore,this study investigated the number and distribution of female flowers formed by side buds by removing the top buds from yellowhorn branches with different diameters,and explored the influence of removing the top buds on the formation of female flowers with side buds.The results showed that partly removing the top buds of branches could effectively improve the female inflorescence numbers and female flower num-bers of yellowhorn,and the pruning effect was closely related to the branches diameter.The larger the di-ameter of the branch,the more female flowers it produces.The number of standard female flowers of 3.0-5.0 mm branches was reduced after removing the top bud,and it was not recommended to prune;The standard female inflorescence number and standard female flower number of 5.0-7.0 mm branches were significantly increased after topping,which was suitable for pruning;Although the female flower index of 7.0-9.0 mm branches increased to a certain extent after topping,the improvement effect was not signifi-cant,so it can be retained without treatment.Removing the top bud can change the distribution of female flowers on the side inflorescences,so that female flowers are no longer concentrated in a single inflores-cence,but appear on more side inflorescences in a decreasing manner,which is conducive to subsequent fruit setting.This study provides a theoretical basis and practical guidance for the shaping and pruning technology of yellowhorn high-yield cultivation.关键词
文冠果/去除顶芽/枝条直径/侧芽雌花/整形修剪Key words
Xanthoceras sorbifolium/remove top bud/branch diameter/female flowers with side buds/sha-ping and pruning分类
农业科技引用本文复制引用
王晨雪,班卓,许慧慧,张凌峰,李迎超,刘肖娟,毕泉鑫,于海燕..文冠果不同直径枝条去除顶芽对侧芽雌花形成的影响规律[J].西北林学院学报,2025,40(3):29-35,7.基金项目
"十四五"国家重点研发计划子课题(2023YFD2200302). （2023YFD2200302）
