Collaborative Research: Genetic and Environmental Causes of Willow Hybrid Plant Resistance to Herbivores and a Pathogen

合作研究：柳树杂交植物对食草动物和病原体的抗性的遗传和环境原因

• 批准号: 9615617
• 负责人: Steven Brunsfeld
• 金额: $ 14万
• 依托单位: Regents of the University of Idaho
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-03-01 至 2001-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9615617&HistoricalAwards=false
• 关键词: Collaborative; Research; Genetic; Environmental; Causes

Brunsfeld, S. J. DEB-9615617 This project will study the consequences of plant hybridization on resistance to plant-feeding insects and a rust pathogen. The PIs will use a model system of two willow species (Salix sericea and S. eriocephala) that naturally hybridize in large parts of their range. Molecular markers will be used to establish the purity of parents used in crosses and for identifying naturally introgressed plants. The study will use comparisons of resistance among genetic classes of willows growing in the two parental environments, and will measure the effects of genetic class and environment on fitness of seedlings in the presence and absence of a rust pathogen. The study will also determine experimentally if introgression affects resistance of introgressed plants compared to pure parents. Hybrid plants are widely used for agricultural and forest tree breeding. These plants often have growth and yield characteristics that make them more productive for commercial use. In several cases, however, hybrid plants have been found to be highly susceptible to disease. Understanding the consequences of hybridization on resistance may be important to controlling insect damage and diseases in hybrid populations and could reveal environmental and genetic factors that will improve commercial success of hybrid plants in agriculture and forestry.

Brunsfeld, S. J. DEB-9615617 该项目将研究植物杂交对以植物为食的昆虫和锈病病原体的抗性的影响。 PI 将使用两种柳树物种（Salix sericea 和 S. eriocephala）的模型系统，这两种柳树物种在其大部分范围内自然杂交。 分子标记将用于确定杂交中使用的亲本的纯度以及识别自然渗入的植物。 该研究将比较在两种亲本环境中生长的柳树的遗传类别之间的抗性，并将测量遗传类别和环境对存在和不存在锈病病原体的幼苗适应性的影响。 该研究还将通过实验确定基因渗入是否会影响基因渗入植物与纯亲本相比的抗性。 杂交植物广泛用于农业和林木育种。 这些植物通常具有使它们在商业用途上更具生产力的生长和产量特征。 然而，在一些情况下，人们发现杂交植物非常容易受到疾病的影响。 了解杂交对抗性的影响对于控制杂交种群中的昆虫损害和疾病可能很重要，并且可以揭示环境和遗传因素，从而提高农业和林业杂交植物的商业成功。