南瓜（C.Moschata Duch） F2居群分离畸变及连锁分析

IF 2.2 Q3 GENETICS & HEREDITY

Plant Gene Pub Date : 2025-04-08 DOI:10.1016/j.plgene.2025.100508

Zixia Zhang, Yanfang Jiang, Hailong Zhu, Ziyao Chen, Zefa Liu

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引用次数: 0

摘要

利用B-5 × a -3杂交获得的F2个材料作为莫夏塔的定位群体。杜赫。在分析的89个遗传标记（ls、yf和87个标记等位基因）中，F2群体中有5个标记（5.6% P<0.01）和12个标记（13.5% P<0.01）存在遗传畸变。在这些分离扭曲遗传标记中，有11个遗传标记偏向父本B-5(64.70%)， 3个遗传标记偏向杂合子（17.65%），3个遗传标记偏向双亲（17.65%）。这些分离畸变遗传标记以紧密位点或单标记簇的形式分布在9条不同的染色体上，其中3条（LGP2、LGP6和LGP10）染色体上有3个（SDR1、SDR2和SDR3）热点区。本文讨论了分离扭曲的原因，认为配子体选择可能是遗传多态性位点分离扭曲的结果。

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Segregation distortion and linkage analysis in F2 populations of pumpkin (C.Moschata Duch)

F₂ materials derived from a cross between introgression lines B-5 × A-3 were used as mapping population in C. moschata. Duch. Among the 89 genetic markers (ls, yf, and 87 marker alleles) analyzed, 5 markers (5.6 % P<0.01) and 12 markers (13.5 % P<0.01) showed genetic distortion in the F₂ population. Among these segregation distortion genetic markers, 11 genetic markers were skewed to the male parent B-5(64.70 %), 3 genetic markers were skewed to the heterozygote (17.65 %), and 3 genetic markers were skewed to both parents (17.65 %). These segregation distortion genetic markers were in the clusters of tight loci or single markers, which were distributed in 9 different chromosomes with 3 (SDR1, SDR2, and SDR3) hot regions in 3 (LGP2, LGP6, and LGP10) of them. In this research, reasons for segregation distortion were discussed, and the gametophyte selection may be the result of segregation distortion of genetic polymorphic loci.

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来源期刊

Plant Gene Agricultural and Biological Sciences-Plant Science

CiteScore

4.50

自引率

0.00%

发文量

审稿时长

51 days

期刊介绍： Plant Gene publishes papers that focus on the regulation, expression, function and evolution of genes in plants, algae and other photosynthesizing organisms (e.g., cyanobacteria), and plant-associated microorganisms. Plant Gene strives to be a diverse plant journal and topics in multiple fields will be considered for publication. Although not limited to the following, some general topics include: Gene discovery and characterization, Gene regulation in response to environmental stress (e.g., salinity, drought, etc.), Genetic effects of transposable elements, Genetic control of secondary metabolic pathways and metabolic enzymes. Herbal Medicine - regulation and medicinal properties of plant products, Plant hormonal signaling, Plant evolutionary genetics, molecular evolution, population genetics, and phylogenetics, Profiling of plant gene expression and genetic variation, Plant-microbe interactions (e.g., influence of endophytes on gene expression; horizontal gene transfer studies; etc.), Agricultural genetics - biotechnology and crop improvement.