2026-04-17T14:06:08Zhttps://recercat.cat/oai/requestoai:recercat.cat:20.500.12327/29402025-10-22T11:18:22Zcom_2072_4428com_2072_4427col_2072_487898
RECERCAT
author
Aranzana, Maria Jose
author
Illa, Eudald
author
Howad, Werner
author
Arús, Pere
other
Producció Vegetal
group
Genòmica i Biotecnologia
2025-10-22T11:18:21Z
2025-10-22T11:18:21Z
2012-06-10
Aranzana, María José, Eudald Illa, Werner Howad, and Pere Arús. 2012. “A First Insight Into Peach [Prunus Persica (L.) Batsch] SNP Variability.” Tree Genetics & Genomes 8 (6): 1359–1369. doi:10.1007/s11295-012-0523-6.
1614-2942
http://hdl.handle.net/20.500.12327/2940
https://doi.org/10.1007/s11295-012-0523-6
Three factors may have reduced the diversity at
both individual gene and whole genome levels in cultivated
peach: its self-compatible mating system, the narrow genetic
basis of most commercial cultivars, and the recent strong
selection towards agronomically interesting traits. Previous
diversity analyses with markers such as simple sequence
repeats (SSRs) have revealed low levels of genetic variability. Here, we sequenced 23 genome-wide distributed DNA
fragments in 47 occidental peach varieties, also observing
reduced variability levels. On average, there was one single
nucleotide polymorphism (SNP) every 598 bp and one indel
every 4,189 bp. As expected, variability was higher in noncoding than in coding regions (one SNP every 390 noncoding bp versus one in 1,850 bp in coding DNA). In
general, SNPs were observed at relatively high frequency,
mean minor allele frequency00.225, meaning that a large
proportion of the SNPs discovered by sequencing similar
germplasm will be useful for other purposes, such as association mapping. The average heterozygosity of the varieties
was 0.28, with a low correlation between SSR and SNP
heterozygosity. The whole sequence of two candidate genes,
a pectate lyase 1 candidate for fruit firmness (CGPAA2668)
and a sucrose synthase 1 candidate for sugar content
(CGPPB6189), in the 47 varieties revealed that they both
may have suffered a process of balancing selection.
eng
Attribution 4.0 International
A first insight into peach [Prunus persica (L.) Batsch] SNP variability
info:eu-repo/semantics/article