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首页> 外文期刊>Northern Journal of Applied Forestry >Evaluating growth and resistance of eastern and western white pine to white pine weevil and blister rust in the northeast
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Evaluating growth and resistance of eastern and western white pine to white pine weevil and blister rust in the northeast

机译：评价东部和西部白松对东北白松象鼻虫和​​水疱锈病的生长和抵抗力

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摘要

Eastern white pine is highly susceptible to damage from white pine weevil, and to some extent white pine blister rust, in the northeastern United States. Western white pine has shown resistance to the weevil, but is highly susceptible to blister rust in the West. Objectives of this study were to compare the growth and resistance of eastern and western white pine to damage from the weevil and blister rust and to identify families Of western white pine suitable for planting in the East. Afield trial containing 76 half-sib families of western white pine and two half-sib families of eastern white pine was established in 1983 at two sites, one each in New York and Maine. After 14 yr, tree height and diameters were measured, and resistance to weevil and rust assessed. Tree height and diameters were significantly greater for eastern white pine than western white pine. Western white pine sustained approximately fourfold less weevil damage at both sites, but was more impacted by rust at one site. Cluster and discriminant analyses were used to group families using three variables: height growth, resistance to weevil, and resistance to blister rust. One single group combined superior height growth with moderate resistance to both pests. Selections made from within these families have the most promise for planting western white pine in the East.
机译：在美国东北部，东部的白松非常容易受到白松象鼻虫的伤害，并且在一定程度上受到白松水泡锈的损害。西方白松对象鼻虫有抵抗力，但在西方极易起泡锈病。这项研究的目的是比较东部和西部白松对象鼻虫和水疱锈蚀的损害的生长和抵抗力，并确定适合在东部种植的西部白松的科。 1983年在两个地点建立了包含76个西白松的半同胞家庭和两个东白松的半同胞家庭的野外试验，两个地点分别在纽约和缅因州。 14年后，测量树木的高度和直径，并评估其对象鼻和铁锈的抵抗力。东部白松的树高和直径明显大于西部白松。西部白松在两个地点的象鼻虫损害减少了大约四倍，但在一个地点受到锈蚀的影响更大。聚类和判别分析使用三个变量对家庭进行分组：身高增长，对象鼻虫的抵抗力和对水泡锈病的抵抗力。一个单独的小组将优异的身高增长与对两种害虫的中等抗性相结合。在这些家庭中进行的选择最有可能在东部种植西部白松。

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