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Origin and dissemination of the pollen‐part mutated S C haplotype which confers self‐compatibility in apricot ( Prunus armeniaca )
Author(s) -
Halász Júlia,
Pedryc Andrzej,
Hegedűs Attila
Publication year - 2007
Publication title -
new phytologist
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.742
H-Index - 244
eISSN - 1469-8137
pISSN - 0028-646X
DOI - 10.1111/j.1469-8137.2007.02220.x
Subject(s) - prunus armeniaca , biology , haplotype , genetics , pollen , pollen tube , prunus , allele , gene , cultivar , botany , pollination
Summary• In China, its centre of origin, apricot ( Prunus armeniaca ) is self‐incompatible. However, most European cultivars are self‐compatible. In most cases, self‐compatibility is a result of a loss‐of‐function mutation within the pollen gene ( SFB ) in the S C haplotype. Controlled pollinations performed in this work revealed that the cross ‘Ceglédi óriás’ ( S 8 S 9 ) × ‘Ceglédi arany’ ( S C S 9 ) set well, as expected, but the reciprocal cross did not. • Apricot S 8 , S 9 and S C haplotypes were analysed using a multilevel approach including fruit set evaluation, pollen tube growth analysis, RNase activity assays, polymerase chain reaction (PCR) analysis and DNA sequencing of the S‐RNase and SFB alleles. • SFB8 was revealed to be the first known progenitor allele of a naturally occurring self‐compatibility allele in Prunus , and consequently S C = . The first intron of S C ‐ RNase is a phase one intron, indicating its more recent evolutionary origin compared with the second intron. Sequence analysis of different cultivars revealed that more single nucleotide polymorphisms accumulated in S C ‐ RNase than in SFB C . New methods were designed to allow high‐throughput analysis of S genotypes of apricot cultivars and selections. • S‐RNase sequence data from various sources helped to elucidate the putative origin and dissemination of self‐compatibility in apricot conferred by the S C haplotype.