Autumn frost damage: Clonal variation in Sitka spruce

被引：5

作者：

Nicoll, BC ^{[1
]}

Redfern, DB ^{[1
]}

McKay, HM ^{[1
]}

机构：

[1] FORESTRY COMMISS ROSLIN,NO RES STN,DIV RES,ROSLIN EH25 9SY,MIDLOTHIAN,SCOTLAND

来源：

FOREST ECOLOGY AND MANAGEMENT | 1996年 / 80卷 / 1-3期

关键词：

autumn frost; electrolyte leakage; root dormancy; tree selection; clonal variation; Picea sitchensis;

D O I：

10.1016/0378-1127(95)03635-0

中图分类号：

S7 [林业];

学科分类号：

0829 ; 0907 ;

摘要：

Current-year needles of Sitka spruce (Picea sitchensis) can be injured by frost after hardening of stem and buds in the autumn, and in Scotland trees of southern provenances are most susceptible to damage. In October 1993 a frost of - 5 degrees C caused needle damage to clonal plants of Alaskan, Queen Charlotte Islands, and Washington provenances of Sitka spruce that had been selected for variation in the onset of root dormancy. Visual damage assessment revealed significant differences among clones in the severity of damage, and this damage was positively correlated with the lateness of root dormancy. Measurement of electrolyte leakage from shoot samples confirmed the observed differences between clones. The large clonal differences in frost hardiness found in this study demonstrate a potential for selecting frost tolerant trees from within southern provenances of Sitka spruce.

引用

页码：107 / 112

页数：6

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