How does population outcrossing rate influence seed quality? A case study from a seed tree stand of Pinus massoniana

Inbreeding is thought to be a key adverse factor impacting the genetic quality of seeds in seed production populations and the inbreeding degree (i.e., selfing or outcrossing rate) of seed production populations have been extensively assessed through mating system analysis. The adverse effect of inb...

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Bibliographic Details
Published in:New forests 2024-07, Vol.55 (4), p.649-660
Main Authors: Wei, Wei, Chen, Mei-Xi, Li, Xian-Qin, Jiang, Wei-Xin, Bai, Tian-Dao
Format: Article
Language:English
Subjects:
Biomedical and Life Sciences
Confidence intervals
Fertilization
Forestry
Genetic markers
Germination
Inbreeding
Inbreeding depression
Life Sciences
Microsatellites
Pine
Pinus massoniana
Pollination
Population genetics
Population studies
Populations
Seed germination
Seeding
Seeds
Self-fertilization
Statistical analysis
Systems analysis
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Summary:Inbreeding is thought to be a key adverse factor impacting the genetic quality of seeds in seed production populations and the inbreeding degree (i.e., selfing or outcrossing rate) of seed production populations have been extensively assessed through mating system analysis. The adverse effect of inbreeding on seed quality traits in seed production populations under open-pollination conditions has not yet been clearly described. In this study, the open-pollinated seeds were collected from 26 mother trees in a 58-year-old seed tree stand. Three seed quality traits, including thousand-seed weight (TSW), germination rate (GR), and germination potential (GP), were measured, and the seeds from eight of 26 families with significant differences in seed quality traits were genotyped through twelve microsatellite markers. In addition, the seeds and sprouts (germinated seeds) from six families were genotyped to reveal the effect of inbreeding on seed germination. The three seed quality traits significantly differed among families ( p  
ISSN:0169-4286
1573-5095
DOI:10.1007/s11056-023-09995-5