作物多样性的表型极限:对功能特征空间的数据探索
Andrés G Rolhauser1,2,3, Marney E Isaac1,4, Cyrille Violle5
1Department of Physical and Environmental Sciences, University of Toronto Scarborough, Toronto, M1C1A4, ON, Canada.
The New phytologist
|August 25, 2024
概括
功能空间积累曲线显示了作物多样性的极限. 增加更多的基因型会导致功能特征的回报减少,这会影响繁殖和农业生态系统管理.
科学领域:
- 农业科学 农业科学
- 遗传学 遗传学 是一个
- 生态生态学 生态生态学
背景情况:
- 了解作物遗传多样性与功能特征之间的联系对于农业可持续性至关重要.
- 现有的量化这种关系的方法是有限的.
研究的目的:
- 引入和评估"功能空间积累曲线" (FSACs),以分析随着作物基因型的增加而增加的特征空间扩张.
- 量化各种作物物种和野生相对的基因型-特征空间关系.
主要方法:
- 开发并应用FSAC来分析大麦,大米,大豆, durum小麦和Arabidopsis thaliana的特征多样性.
- 检查了特征空间如何随着每个物种内的基因型数量而变化.
主要成果:
- 所有五种物种都显示出非对称的FSACs,表明功能多样性的和点.
- 随着基因型数量的增加,功能多样性回报的减少被观察到.
- 识别了和的潜在原因,包括主要的表型和功能冗余.
结论:
- FSAC有效量化作物中的特征空间占用.
- 这些发现对在育种计划和农业生态系统中管理作物遗传多样性的影响很大.
- 建议在作物物种内对物种内功能多样性的有限限制.
关键词:
农业生物多样性人工选择 人工选择植物的多样性 植物的多样性功能多样性的功能多样性.多功能性的多功能性.植物功能性特征 植物功能性特征种类面积关系关系.属性 超大体积 超大体积空间特征特征空间特征更多相关视频
相关概念视频
02:16Light Acquisition
8.4K
In order to produce glucose, plants need to capture sufficient light energy. Many modern plants have evolved leaves specialized for light acquisition. Leaves can be only millimeters in width or tens of meters wide, depending on the environment. Due to competition for sunlight, evolution has driven the evolution of increasingly larger leaves and taller plants, to avoid shading by their neighbors with contaminant elaboration of root architecture and mechanisms to transport water and nutrients.
8.4K
01:38Limits to Natural Selection
31.2K
Organisms that are well-adapted to their environment are more likely to survive and reproduce. However, natural selection does not lead to perfectly adapted organisms. Several factors constrain natural selection.
31.2K
01:59Plant Breeding and Biotechnology
18.9K
Crop cultivation has a long history in human civilization, with records showing the cultivation of cereal plants beginning at around 8000 BC. This early plant breeding was developed primarily to provide a steady supply of food.
18.9K
02:27Trihybrid Crosses
23.2K
Trihybrid Crosses
Some of Mendel’s crosses examined three pairs of contrasting characteristics. Such a cross is called a trihybrid cross. A trihybrid cross is a combination of three individual monohybrid crosses. For example, plant height (tall vs. short), seed shape (round vs. wrinkled), and seed color (yellow vs. green).
The F1 generation plants of a trihybrid cross are heterozygous for all three traits and produce eight gametes. Upon self-fertilization, these gametes have an equal...
Some of Mendel’s crosses examined three pairs of contrasting characteristics. Such a cross is called a trihybrid cross. A trihybrid cross is a combination of three individual monohybrid crosses. For example, plant height (tall vs. short), seed shape (round vs. wrinkled), and seed color (yellow vs. green).
The F1 generation plants of a trihybrid cross are heterozygous for all three traits and produce eight gametes. Upon self-fertilization, these gametes have an equal...
23.2K
01:21Frequency-dependent Selection
21.9K
When the fitness of a trait is influenced by how common it is (i.e., its frequency) relative to different traits within a population, this is referred to as frequency-dependent selection. Frequency-dependent selection may occur between species or within a single species. This type of selection can either be positive—with more common phenotypes having higher fitness—or negative, with rarer phenotypes conferring increased fitness.
21.9K
01:18Polygenic Traits
65.6K
When more than one gene is responsible for a given phenotype, the trait is considered polygenic. Human height is a polygenic trait. Studies have uncovered hundreds of loci that influence height, and there are believed to be many more. Due to the high number of genes involved, as well as environmental and nutritional factors, height varies significantly within a given population. The distribution of height forms a bell-shaped curve, with relatively few individuals in the population at the...
65.6K