通过多变量分析选择Paspalum notatum Flügge的物种内杂交物种的REML/BLUP方法
Diógenes C Silveira1, Roberto Luis Weiler1, André P Brunes1
1Universidade Federal do Rio Grande do Sul, Faculdade de Agronomia, Departamento de Plantas Forrageiras e Agrometeorologia, Av. Bento Gonçalves, 7712, 91501-970 Porto Alegre, RS, Brazil.
Anais da Academia Brasileira de Ciencias
|January 10, 2024
概括
这项研究突出了Paspalum notatum杂交物种在料生产中的遗传潜力. 使用先进的统计方法确定了优质杂交物种,为畜牧放牧改进提供了希望.
科学领域:
- 植物育种 植物育种
- 农业学是一种农业学.
- 遗传学 是一个遗传学.
背景情况:
- 帕斯帕勒姆 (Paspalum) 属,特别是P. notatum,表现出显著的适应性和牲畜放牧的高产量潜力.
- 基因改进对于优化料生产和提高其对放牧动物的价值至关重要.
研究的目的:
- 估计遗传参数并确定用于料生产的优异Paspalum notatum杂交物.
- 在多变量育种计划中评估限制最大概率 (REML) 和最佳线性无偏预测 (BLUP) 的有效性.
主要方法:
- 用REML.估计了195种种类内P.notatum杂交物种的遗传参数.
- 使用BLUP分析结合多变量方法进行了选择.
- 植物的高度被评估为料产量间接选择的特征.
主要成果:
- 在料特征方面,在P. notatum杂交物种中观察到相当大的遗传变异.
- 植物的高度被确定为间接选择的关键特征,以改善料生产.
- 混合物D3,D16,C17,C2和B17显示出优越的料生产潜力.
结论:
- REML/BLUP程序是用于多年生物种繁殖的强大的分析工具.
- 建议使用BLUP进行多变量分析,以便在育种计划中进行选择.
- 已识别的优质杂交物为未来的Paspalum notatum育种计划提供了重大前景,旨在提高产量.
相关概念视频
Dihybrid Crosses
74.9K
Overview
74.9K
Trihybrid Crosses
23.3K
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...
23.3K
Monohybrid Crosses
230.1K
Overview
230.1K
Chi-square Analysis
38.2K
The chi-square test is a statistical hypothesis test. It is used to check whether there is a significant difference between an expected value and an observed value. In the context of genetics, it enables us to either accept or reject a hypothesis, based on how much the observed values deviate from the expected values.
The chi-square test was developed by Pearson in 1990.
The first step of performing a Chi-square analysis is to establish a null hypothesis, which assumes that there is no real...
The chi-square test was developed by Pearson in 1990.
The first step of performing a Chi-square analysis is to establish a null hypothesis, which assumes that there is no real...
38.2K
Incomplete Dominance
22.6K
Gregor Mendel's work (1822 - 1884) was primarily focused on pea plants. Through his initial experiments, he determined that every gene in a diploid cell has two variants called alleles inherited from each parent. He suggested that amongst these two alleles, one allele is dominant in character and the other recessive. The combination of alleles determines the phenotype of a gene in an organism.
22.6K
Law of Segregation
66.0K
When crossing pea plants, Mendel noticed that one of the parental traits would sometimes disappear in the first generation of offspring, called the F1 generation, and could reappear in the next generation (F2). He concluded that one of the traits must be dominant over the other, thereby causing masking of one trait in the F1 generation. When he crossed the F1 plants, he found that 75% of the offspring in the F2 generation had the dominant phenotype, while 25% had the recessive phenotype.
66.0K


