Loading…
Population genetics of traditional landraces of Cucurbita pepo L., 1753 in the cloud forest in Baja Verapaz, Guatemala
Little is known regarding the effect of fragmentation and human agricultural management on the genetic variation and gene flow of Cucurbita pepo L., 1753 in moderate fragmented areas in central Guatemala. We hypothesize that the genetic variation of C. pepo is affected by forest fragmentation and by...
Saved in:
Published in: | Genetic resources and crop evolution 2018-03, Vol.65 (3), p.979-991 |
---|---|
Main Authors: | , , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Summary: | Little is known regarding the effect of fragmentation and human agricultural management on the genetic variation and gene flow of
Cucurbita pepo
L., 1753 in moderate fragmented areas in central Guatemala. We hypothesize that the genetic variation of
C. pepo
is affected by forest fragmentation and by traditional agricultural management. Therefore, we aim to determine: (1) the genetic diversity and genetic structure of
C. pepo
in the Cloud Forest Corridor (CFC) (2) the extent of genetic admixture between commercial variety (CV) and traditional landraces (TL) of
C. pepo
, (3) the effect of habitat fragmentation in the population genetics of
C. pepo
with a landscape approach, and (4) the potential relationship between traditional management practices and genetic diversity of
C. pepo
in the CFC. We detected the existence of high level of genetic diversity (
AR
= 3.43;
He
= 0.50), inbreeding (
Fis
= 0.25) and moderate population structure of
C. pepo
in the CFC (
Fst
= 0.16). No correlation between landscape and genetics was found. Also, we found high genetic admixture between CV and TL. It seems that human practices, mainly related with seed exchange patterns, could affect genetic diversity of
C. pepo
in the CFC.
C. pepo
populations in the CFC are structured, with inbreeding, and show admixture with the CV, an aspect that could affect its genetic diversity. The agricultural management influenced the population genetics of
C. pepo
in the CFC, but the landscape did not. We suggest that special efforts should be made to preserve the diversity of this important indigenous food source for Guatemalan people as well as their management practices. |
---|---|
ISSN: | 0925-9864 1573-5109 |
DOI: | 10.1007/s10722-017-0589-y |