ArticleFrontiers in plant science2020
Analysis of Crossover Events and Allele Segregation Distortion in Interspecific Citrus Hybrids by Single Pollen Genotyping.
Article in Frontiers in plant science, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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5 citing papers in PubMed.
- Integrated high-density genetic maps in multi-parent FBMC plant biology · 2026Article
- A simple and high-throughput single pollen genotyping pipeline to study meiosis in apple (Malus x domestica).Plant methods · 2026Article
- Construction of Simple Sequence Repeat-Based Genetic Linkage Map and Identification of QTLs for Accumulation of Floral Volatiles in Lavender (International journal of molecular sciences · 2025Article
- Construction of a high density genetic linkage map to define the locus conferring seedlessness from Mukaku Kishu mandarin.Frontiers in plant science · 2023Article
- Genotyping of polyploid plants using quantitative PCR: application in the breeding of white-fleshed triploid loquats (Eriobotrya japonica).Plant methods · 2021Article
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7 authors.
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Abstract
In citrus, a classical method of studying crossovers and segregation distortion (SD) is the genetic analysis of progenies. A new strategy combining fluorescence-activated cell sorting and whole genome amplification of haploid pollen nuclei with a large set of molecular markers, offers the opportunity to efficiently determine the frequency of crossovers and the identification of SD without the need to generate segregating populations. Here we have analyzed meiotic crossover events in a pollen nuclei population from "Eureka" lemon and the allelic SD was evaluated in a pollen nuclei population from a clementine × sweet orange hybrid ("CSO"). Data obtained from the "CSO" pollen nuclei population were compared to those obtained from genotyping of a segregating population ("RTSO") arising from a hand-made sexual hybridization between diploid non apomictic selected tangor (mandarin × sweet orange; "RTO" tangor) as female parent pollinated with "CSO" tangor as male parent. The analysis of crossovers rates on chromosome 1 revealed the presence of up to five crossovers events on one arm and four on the corresponding other arm, with an average of 1.97 crossovers per chromosome while no crossover events were observed in five "Eureka" lemon pollen nuclei. The rate of SD observed in "CSO" pollen nuclei (13.8%) was slightly lower than that recovered in the "RTSO" population (20.7%). In the pollen nuclei population, SD was found on linkage group (LG) 2, while the "RTSO" population showed SD on LGs 2 and 7. Potential male gametic selection mechanisms were distinguished in pollen grains, while in the population, mechanisms of gametophytic selection and/or zygotic selection were observed. This methodology is a very useful tool to facilitate research focused on the reproductive biology of citrus and study the mechanisms that affect crossovers and SD.
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