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Genetic variation in physiology and growth under ambient and elevated carbon dioxide concentrations in four provenances of Populus tremuloides from northwestern Ontario.

机译:在来自安大略省西北部的四种杨树资源中,在环境和二氧化碳浓度升高下,生理和生长的遗传变异。

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摘要

Trembling aspen (Populus tremuloides Michx.) is the most widely distributed and probably most genetically varied woody species in North America. Four provenances of trembling aspen seedlings from northwestern Ontario were grown in the greenhouse to investigate genetic variation of growth and ecophysiological responses to ambient and elevated CO2 concentrations. Two provenances were from southwest of Thunder Bay, and the other two were from north shore of Lake Superior. Three families per provenance were grown. Leaf gas exchange variables, growth and biomass were measured at 3 and 5 months old (August and October 2001) in the first year and 60 days after bud flush in the second year (April 2002).; The seedlings were also exposed to three CO2 concentrations (ambient, 540 PPM and 720 PPM) in greenhouses for 30 days in the first year and 60 days after bud flush in the second year. Other environmental conditions were controlled at optimal. (Abstract shortened by UMI.)
机译:颤抖的白杨(Populus tremuloides Michx。)是北美分布最广,遗传可能最多样化的木本物种。在温室中种植了来自安大略省西北部的四种发抖的白杨幼苗,以研究生长的遗传变异以及对环境和二氧化碳浓度升高的生态生理响应。其中两个来源来自桑德贝(Thunder Bay)的西南,另外两个则来自苏必利尔湖(Lake Superior)的北岸。每个出身的家庭增加了三个。 ;在第一年的3和5个月大时(2001年8月和2001年10月)以及第二年的芽冲洗后60天(2002年4月)测量叶片气体交换变量,生长和生物量。第一年的幼苗在温室中也暴露于三种二氧化碳浓度(环境,540 PPM和720 PPM),分别在第一年的30天和第二年的芽冲洗后的60天。其他环境条件控制在最佳状态。 (摘要由UMI缩短。)

著录项

  • 作者

    Liu, Ning.;

  • 作者单位

    Lakehead University (Canada).;

  • 授予单位 Lakehead University (Canada).;
  • 学科 Agriculture Forestry and Wildlife.; Biology Plant Physiology.; Biology Genetics.
  • 学位 M.Sc.F.
  • 年度 2003
  • 页码 84 p.
  • 总页数 84
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 森林生物学;植物学;遗传学;
  • 关键词

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