在大豆中继承早期口腔关闭特征:Ellis × N09-13890 种群
Avat Shekoofa1, Victoria Moser1, Kripa Dhakal1,2
1Department of Plant Sciences, University of Tennessee, 2505 E.J. Chapman Dr., Knoxville, TN 37996, USA.
Plants (Basel, Switzerland)
|September 28, 2023
概括
大豆基因型在早期口腔关闭方面表现出遗传差异,这是耐旱性的一个关键特征. 这一发现有助于开发适应缺水条件的新大豆品种.
科学领域:
- 植物生理学 植物生理学
- 农作物科学 农作物科学
- 遗传学 遗传学 是一个
背景情况:
- 干旱压力大大降低了大豆的产量和生长.
- 选择适应干旱的大豆基因型对于减轻产量损失至关重要.
- 早期的口腔关闭是干旱期间用水效率的重要特征.
研究的目的:
- 为了研究大豆早期口腔关闭的遗传 (Glycine max L. 快乐吧,快乐吧,快乐吧,快乐吧,快乐吧. ) 的情况.
- 为了确定大豆基因型,在缺水压力下对口腔关闭的门有所不同.
主要方法:
- 利用了从N09-13890和Ellis之间交叉的重组杂交系 (RILs) 的种群.
- 在受控条件下进行了干燥试验,以施加逐渐的缺水压力.
- 测量了可透气土壤水 (FTSW) 的微分,在这个微分时,透气减少.
主要成果:
- 在30个大豆种系中观察到FTSW口腔关闭值的显著变化,范围从0.18到0.80.
- 大约65%的RIL显示FTSW值在0.41和0.80之间.
- 结果表明,大豆后代的早期口腔关闭特征具有很高的遗传性.
结论:
- 早期的口腔关闭是大豆的一个遗传性特征,对育种计划有价值.
- 识别具有卓越的口腔关闭机制的基因型可以增强干旱适应能力.
- 这项研究为开发适合干旱和半干旱地区的大豆品种提供了基础.
相关概念视频
01:20Monohybrid Crosses
230.3K
Overview
230.3K
02:27Trihybrid Crosses
23.4K
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...
23.4K
01:18Dihybrid Crosses
75.1K
Overview
75.1K
01:43Incomplete Dominance
22.7K
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.
22.7K
01:39Test Cross
42.0K
Alleles are different forms of the same gene. Humans and other diploid organisms inherit two alleles of every gene, one from each parent.
42.0K
01:49Law of Segregation
66.1K
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.
66.1K