摘要
酚甙类物质是杨柳科植物体内最重要的防御性物质。本文以美洲黑杨回交群体为研究对象 ,研究了整个群体生长量和叶部酚甙类物质的变异情况。结果表明 ,叶部几种酚甙类物质水杨甙、柳皮甙和美洲黑杨甙等的含量 ,以及高生长和地径均遵循正态变化 ,表现为较为典型的数量性状。总酚甙含量与高生长呈负相关 ,相关系数为 - 0 30 4。颤杨甙首次从美洲黑杨中测到。植物防御系统可能会以消耗一定的生长为代价 ;可以从群体内选出生长快且酚甙含量高的无性系。机械伤害对树皮酚甙类物质有明显的诱导作用 ,特别是柳皮甙在 4 8h内升高 78 9%。在致伤条件下酚甙类物质增多是杨树对动物。
Phenolic glycosides were main defense chemicals for Salicaceae. The variation of phenolic glycosides in leaves, height and diameter for all individuals of a whole \%Populus deltoides\% back cross population was studied. The result indicated that salicin, salicortin, deltoidin, height and diameter all followed normal distribution, so these traits displayed in quantitative fashion. The concentration of total phenolic glycosides showed negative correlation with height and the correlation coefficient was \%r=-0 304.\% Tremulacin was discovered for the first time in \%P deltoides.\% The plant defenses were at the cost of growth only in some degree. The individuals with high phenolic glycosides concentration and higher height could be selected from the population. Mechanical wounding on the stem bark induced significant increases in concentrations of phenolic glycosides, especially for salicortin, and the increase was 78 9% within 48 h. The increase of phenolic glycosides under wounding was the main mechanism for poplar resistance to animal, insects as well as pathogenic bacteria.
出处
《林业科学》
EI
CAS
CSCD
北大核心
2002年第4期40-45,共6页
Scientia Silvae Sinicae
基金
引进国际先进农业科学技术项目(948)“杨树抗病虫害育种新技术引进”(96-4-24)。
