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黄瓜F群体中每节雌花数和多雌花性状的遗传图谱构建及数量性状位点分析

Genetic mapping and quantitative trait loci analysis for pistillate flowers per node and multi-pistillate flower traits in the F cucumber population.

作者信息

Anankul Nattawat, Sattayachiti Wannapa, Onmanee Namfon, Chanmoe Saengchit, Bundithya Weenun, Kumchai Jutamas

机构信息

Department of Plant and Soil Sciences, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50200, Thailand.

Hortigenetics Research (S.E. Asia) Company Limited, Chiang Mai, 50290, Thailand.

出版信息

Breed Sci. 2024 Jun;74(3):204-213. doi: 10.1270/jsbbs.23070. Epub 2024 Jun 18.

DOI:10.1270/jsbbs.23070
PMID:39555008
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11561411/
Abstract

This study focused on cucumbers' multi-pistillate flower (MPF) trait, which is essential for high yields. A genetic linkage map was constructed using a population of 219 F plants to analyze quantitative trait loci (QTL) associated with MPF traits. Crossbreeding of EWSCU-809 (MPF) with EWSCU-989 (single pistillate flower: SPF) generated an F hybrid that self-pollinated to form an F population. Based on 244 single nucleotide polymorphic markers across seven cucumber chromosomes, a linkage map facilitated QTL analysis considering average pistillate flowers (PFs) per node and nodes with MPF traits. The results indicated a 9:6:1 epistatic ratio in the F populations, revealing recessive allele control of the MPF trait in gynoecious plants. Three QTLs (, , ) on chromosomes 2, 3, and 7 were associated with average PFs per node, explaining 5.6 to 10.3% of phenotypic variation. Four QTLs (, , , ) on chromosomes 2, 3, 4, and 7 were linked to the presence of nodes with MPF traits, explaining 5.8 to 10.6% of phenotypic variance. Notably, QTL regions overlapped between the two datasets, suggesting pleiotropic effects, particularly on chromosomes 3 and 7. These reliable QTLs have the potential to improve breeding programs, enhance PF development, and increase cucumber yields.

摘要

本研究聚焦于黄瓜的多雌蕊花（MPF）性状，该性状对高产至关重要。利用219株F植物群体构建了遗传连锁图谱，以分析与MPF性状相关的数量性状位点（QTL）。将EWSCU - 809（MPF）与EWSCU - 989（单雌蕊花：SPF）杂交产生F1杂种，并使其自花授粉形成F2群体。基于跨越黄瓜七条染色体的244个单核苷酸多态性标记，一张连锁图谱有助于考虑每个节位平均雌蕊花（PFs）和具有MPF性状的节位进行QTL分析。结果表明F2群体中存在9:6:1的上位性比例，揭示了雌性系植物中MPF性状受隐性等位基因控制。2号、3号和7号染色体上的三个QTL（，，）与每个节位的平均PFs相关，解释了5.6%至10.3%的表型变异。2号、3号、4号和7号染色体上的四个QTL（，，，）与具有MPF性状的节位存在相关，解释了5.8%至10.6%的表型变异。值得注意的是，两个数据集中的QTL区域存在重叠，表明存在多效性效应，特别是在3号和7号染色体上。这些可靠的QTL有潜力改进育种计划、促进PF发育并提高黄瓜产量。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e6fa/11561411/8855cd893ada/74_204-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e6fa/11561411/6cbf500a2f6d/74_204-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e6fa/11561411/7b86e46bd957/74_204-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e6fa/11561411/0fc494bfce07/74_204-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e6fa/11561411/a1b51a784175/74_204-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e6fa/11561411/c803a4724d03/74_204-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e6fa/11561411/b2ff3b37f8bc/74_204-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e6fa/11561411/8855cd893ada/74_204-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e6fa/11561411/6cbf500a2f6d/74_204-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e6fa/11561411/7b86e46bd957/74_204-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e6fa/11561411/0fc494bfce07/74_204-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e6fa/11561411/a1b51a784175/74_204-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e6fa/11561411/c803a4724d03/74_204-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e6fa/11561411/b2ff3b37f8bc/74_204-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e6fa/11561411/8855cd893ada/74_204-g007.jpg

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