摘要
本文研究了广西玉林地区、林科所1959年种植的马尾松抗虫11号植株的抗性机制。通过用抗11号松树对马尾松毛虫成虫产卵选择性试验和幼虫饲养试验。发现抗11号松树对成虫具有拒产卵性,对幼虫具有拒取食性。用抗11号松树针叶饲养的幼虫,出现发育迟缓,死亡率高,蛹重减轻等现象。本研究证明了抗11号松树对马尾松毛虫具有抗选择性和抗生性。抗虫性的主要原因是针叶内含物起了变化,产生拒成虫产卵及幼虫取食并致令生成营养屏障。
The No. 11 masson pine trees in a massonian pine forest located in Yulin, shows significant resistance to D. punctatus This pine tree showed a nonpreference egg-laying of the moths and an adverse effect on the growth of the larvae. Biochemical analysis shows that there are significant differences in the amount of β-pinene, amino acids, carbohydrate and mineral components among the leaves of the pine trees and those of the other masson pine trees. These differences are supposed to be the main factors for the No.11 masson pine's resistance.
出处
《林业科学》
EI
CAS
CSCD
北大核心
1990年第2期133-141,共9页
Scientia Silvae Sinicae
关键词
马毛松
松毛虫
植株抗性
Pinus massoniana
Resistance
Dendrolimus punctatus
β-pinene
Amino acids
Carbohydrate
