Identifying drought resilient populations and genotypes of forest trees to address climate change
确定林木的抗旱种群和基因型以应对气候变化
基本信息
- 批准号:RGPIN-2020-04189
- 负责人:
- 金额:$ 3.42万
- 依托单位:
- 依托单位国家:加拿大
- 项目类别:Discovery Grants Program - Individual
- 财政年份:2022
- 资助国家:加拿大
- 起止时间:2022-01-01 至 2023-12-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
The capacity of trees to withstand drought conditions is key to forest health and productivity under observed and projected climate change in western Canada. This research program has the following strategic objectives: (1) research drought resilience mechanisms of tree species in selected forest ecosystems where water deficits are high; (2) discover genotypes and locally adapted populations with a useful genetic portfolio of drought tolerance traits; and (3) reveal tradeoffs, where structural or physiological adaptations to better cope with drought episodes might impact growth potential when growing conditions are favorable, and identify genotypes where these tradeoffs are minimized. The research program builds on two general approaches. First, we will use tree ring analysis in mature trees to retrospectively assess response to drought episodes (resilience, resistance, and recovery of annual growth rates). A novel aspect of this research program is that these methods will be applied to long-term genetic test plantations of important Canadian forest tree species that have experienced drought episodes over the last 30 years. In search for additional genotypes that may not have been captured in current seed collections and test plantations, we will also sample natural stands exposed to high water deficits and frequent drought conditions. Second, we aim to discover the underlying traits that are responsible for drought response observed in long-term genetic field tests. For this purpose, we will carry out seedling experiments in controlled growth chamber environments using the same seed lots used to establish the genetic field trials decades ago, and which have been archived in provincial and federal seed banks. This allows us to carry out detailed measurements of physiological, hydraulic and structural drought tolerance traits and investigate their heritabilities and genetic correlations. The detailed trait data on drought tolerance mechanisms and tradeoffs discovered in seedlings can subsequently be validated against field data of tree growth and health of the same populations and genotypes grown for decades under field conditions. While this research program has primarily fundamental research goals in discovering drought tolerance mechanisms, the information will be essential to screen for drought tolerant planting stock in reforestation and tree improvement programs in western Canada. Approximately 200 million seedlings per year are planted in western Canada, and the proposed project could yield profound benefits by leveraging this reforestation activity to improve the genetic resilience and productivity of planted forests under climate change.
在加拿大西部观测和预测的气候变化下,树木抵御干旱条件的能力是森林健康和生产力的关键。本研究项目的战略目标是:(1)研究缺水严重的森林生态系统中树种的抗旱机制;(2)发现具有耐旱性状有用遗传组合的基因型和地方适应群体;(3)揭示在生长条件有利时,为更好地应对干旱而进行的结构或生理适应可能影响生长潜力的权衡,并确定这些权衡最小化的基因型。该研究项目建立在两种一般方法的基础上。首先,我们将使用成熟树木的年轮分析来回顾性评估对干旱事件的反应(恢复力、抵抗力和年生长率的恢复)。这项研究计划的一个新颖之处在于,这些方法将被应用于在过去30年里经历过干旱的加拿大重要森林树种的长期基因测试种植园。为了寻找在目前的种子收集和试验种植园中可能没有捕获到的其他基因型,我们还将对暴露在高缺水和频繁干旱条件下的自然林分进行采样。其次,我们的目标是发现在长期遗传田间试验中观察到的干旱反应的潜在性状。为此,我们将使用几十年前用于建立遗传田间试验的同一种子批次,在受控生长室环境中进行幼苗试验,这些种子批次已存档在省级和联邦种子库中。这使我们能够进行生理、水力和结构耐旱性状的详细测量,并研究它们的遗传能力和遗传相关性。在幼苗中发现的关于耐旱机制和权衡的详细性状数据随后可以与在田间条件下生长数十年的相同种群和基因型的树木生长和健康的田间数据进行验证。虽然该研究项目的主要研究目标是发现耐旱机制,但这些信息对于筛选加拿大西部重新造林和树木改良项目中的耐旱树种至关重要。加拿大西部每年种植约2亿棵幼苗,通过利用这种再造林活动来提高气候变化下人工林的遗传弹性和生产力,拟议的项目可以产生深远的效益。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Hamann, Andreas其他文献
Developing seed zones and transfer guidelines with multivariate regression trees
- DOI:
10.1007/s11295-010-0341-7 - 发表时间:
2011-04-01 - 期刊:
- 影响因子:2.4
- 作者:
Hamann, Andreas;Gylander, Tim;Chen, Pei-yu - 通讯作者:
Chen, Pei-yu
Assisted migration to address climate change: recommendations for aspen reforestation in western Canada
- DOI:
10.1890/10-1054.1 - 发表时间:
2011-07-01 - 期刊:
- 影响因子:5
- 作者:
Gray, Laura K.;Gylander, Tim;Hamann, Andreas - 通讯作者:
Hamann, Andreas
Adaptation of lodgepole pine and interior spruce to climate: implications for reforestation in a warming world
- DOI:
10.1111/eva.12345 - 发表时间:
2016-02-01 - 期刊:
- 影响因子:4.1
- 作者:
Liepe, Katharina J.;Hamann, Andreas;Aitken, Sally N. - 通讯作者:
Aitken, Sally N.
Historical and projected climate data for natural resource management in western Canada
- DOI:
10.1016/j.agrformet.2008.11.009 - 发表时间:
2009-05-07 - 期刊:
- 影响因子:6.2
- 作者:
Mbogga, Michael S.;Hamann, Andreas;Wang, Tongli - 通讯作者:
Wang, Tongli
Bioclimate envelope model predictions for natural resource management: dealing with uncertainty
- DOI:
10.1111/j.1365-2664.2010.01830.x - 发表时间:
2010-08-01 - 期刊:
- 影响因子:5.7
- 作者:
Mbogga, Michael S.;Wang, Xianli;Hamann, Andreas - 通讯作者:
Hamann, Andreas
Hamann, Andreas的其他文献
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{{ truncateString('Hamann, Andreas', 18)}}的其他基金
Identifying drought resilient populations and genotypes of forest trees to address climate change
确定林木的抗旱种群和基因型以应对气候变化
- 批准号:
RGPIN-2020-04189 - 财政年份:2021
- 资助金额:
$ 3.42万 - 项目类别:
Discovery Grants Program - Individual
Identifying drought resilient populations and genotypes of forest trees to address climate change
确定林木的抗旱种群和基因型以应对气候变化
- 批准号:
RGPIN-2020-04189 - 财政年份:2020
- 资助金额:
$ 3.42万 - 项目类别:
Discovery Grants Program - Individual
Assisted migration to address climate change in forestry: validating habitat and growth projections
协助移民应对林业气候变化:验证栖息地和增长预测
- 批准号:
330527-2013 - 财政年份:2019
- 资助金额:
$ 3.42万 - 项目类别:
Discovery Grants Program - Individual
Balancing risks and benefits in developing seed transfer prescriptions for forestry to address climate change
平衡制定林业种子转让方案以应对气候变化的风险和收益
- 批准号:
494071-2016 - 财政年份:2018
- 资助金额:
$ 3.42万 - 项目类别:
Strategic Projects - Group
Balancing risks and benefits in developing seed transfer prescriptions for forestry to address climate change
平衡制定林业种子转让方案以应对气候变化的风险和收益
- 批准号:
494071-2016 - 财政年份:2017
- 资助金额:
$ 3.42万 - 项目类别:
Strategic Projects - Group
Assisted migration to address climate change in forestry: validating habitat and growth projections
协助移民应对林业气候变化:验证栖息地和增长预测
- 批准号:
330527-2013 - 财政年份:2016
- 资助金额:
$ 3.42万 - 项目类别:
Discovery Grants Program - Individual
Balancing risks and benefits in developing seed transfer prescriptions for forestry to address climate change
平衡制定林业种子转让方案以应对气候变化的风险和收益
- 批准号:
494071-2016 - 财政年份:2016
- 资助金额:
$ 3.42万 - 项目类别:
Strategic Projects - Group
Assisted migration to address climate change in forestry: validating habitat and growth projections
协助移民应对林业气候变化:验证栖息地和增长预测
- 批准号:
330527-2013 - 财政年份:2015
- 资助金额:
$ 3.42万 - 项目类别:
Discovery Grants Program - Individual
Assisted migration to address climate change in forestry: validating habitat and growth projections
协助移民应对林业气候变化:验证栖息地和增长预测
- 批准号:
330527-2013 - 财政年份:2014
- 资助金额:
$ 3.42万 - 项目类别:
Discovery Grants Program - Individual
Growth and survival of lodgepole pine genotypes under extreme climate events: risk assessment and climate change adaptation strategies
极端气候事件下黑松基因型的生长和生存:风险评估和气候变化适应策略
- 批准号:
430183-2012 - 财政年份:2014
- 资助金额:
$ 3.42万 - 项目类别:
Strategic Projects - Group
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