日本菟丝子对园林植物危害度及适应性生长的研究  

Effects of Cuscuta japonica on the Harmfulness and Adaptive Growth of Garden Plants in Nanchong

作　　者：陈莹 兰芳 刘金平[1] 张一嫚 万其松 CHEN Ying;LAN Fang;LIU Jinping;ZHANG Yiman;WAN Qisun(School of Life Sciences,China West Normal University,Nanchong 637009,China)

机构地区：[1]西华师范大学生命科学学院,四川南充637009

出　　处：《四川林业科技》2023年第1期32-39,共8页Journal of Sichuan Forestry Science and Technology

基　　金：西华师范大学基本科研业务费(17D081)。

摘　　要：通过对日本菟丝子危害范围和增加率的调查,确定偶发、常见和主要寄主园林植物,测定主要的发病率和受害度,分析日本菟丝子与主要寄主植物的相互适应性生长关系。结果表明:日本菟丝子的危害范围不断扩大,乔木、灌木和地被受害率差异显著,但均逐年增加(P<0.05)。日本菟丝子入侵28科35属的41种植物,偶发寄主为12种、常见寄主为19种、主要寄主为10种(3种乔木、2种草本和5种灌木)。主要寄主发病率和受害度在种间和年份间均有显著差异(P<0.05),不同寄主的症状和伴生病害显著不同。日本菟丝子对不同寄主植物叶片和幼茎生长及新枝形成的影响差异显著,寄主种类对日本菟丝子生长和生殖有显著影响,日本菟丝子和寄主植物有显著的适应性生长关系。According to the investigation of the damage range and the increase rate of Cuscuta japonica,the occasional,common and main host garden plants were identified,the incidence rate and damage degree of main host plants were determined,and the adaptive growth relationship between C.japonica and the main host plants was analyzed.The results showed that:(1)The damage range of C.japonica was constantly expanding,and the infection rate of trees,shrubs and ground cover were significant different,but they all increased year by year(P<0.05).(2)There were 41 species of plants belonging to 35 genera and 28 families invaded by C.japonica,among which 12 were occasional hosts,19 were common hosts and 10 were main hosts(3 trees,2 herbs and 5 shrubs).(3)The incidence rate and injury degree of main hosts were significantly different among species and years(P<0.05),and the symptoms and associated diseases of different hosts were significantly different.(4)The effects of C.japonica on the growth of leaves and young stems and the number of new branches of the host plants were significantly different.Host plants had significant effects on the growth and reproduction of C.japonica,and there was a significant adaptive growth relationship between C.japonica and host plants.

关 键 词：日本菟丝子 园林植物 寄生 寄主 危害度 

分 类 号：S451[农业科学—植物保护]