Apricots

Ledbetter, Craig A.

doi:10.1007/978-1-4020-6907-9_2

Cited by 22 publications

(8 citation statements)

References 101 publications

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“…However, apricot trees could survive these intervals from seeds or as escaped individuals. It has been shown that selection may lead to significant genetic gain in apricot (Ledbetter, 2008). The imported Turkish material was likely subjected to natural and human selection pressures that resulted in some landrace cultivars being well adapted to Hungarian ecological conditions and having valuable pomological characteristics.…”

Section: Discussionmentioning

confidence: 99%

S-genotyping Supports the Genetic Relationships between Turkish and Hungarian Apricot Germplasm

Halász¹,

Pedryc²,

Erċışlı

et al. 2010

J. Amer. Soc. Hort. Sci.

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The S-genotypes of a set of Turkish and Hungarian apricot (Prunus armeniaca L.) cultivars were determined by polymerase chain reaction (PCR) amplification of their S-RNase intron regions. In addition, the S-genotyping method was extended to the SFB gene to detect the non-functional SC-haplotype and hence reliably identify self-compatible apricot cultivars. We determined the complete S-genotype of 51 cultivars and the partial S-genotype of four cultivars. A total of 32 different S-genotypes were assigned to the 51 cultivars, and many of them (28) were classified into newly established cross-incompatibility groups III through XIV. Another 12 cultivars demonstrated unique incompatible genotypes and seven self-compatible cultivars were identified in the examined accessions. The fact that Turkish and Hungarian apricot cultivars carry 12 and five S-alleles, respectively, and all five alleles detected in Hungarian cultivars were also present in Turkish apricots furnished molecular evidence supporting the long-suspected historical connection between Hungarian and Turkish apricots. The connection between these two gene pools appeared to be relatively recent and associated with historical events dating back 300 years. Our results confirm that Turkish germplasm contributed considerably to the development of several desirable Hungarian apricot cultivars. Results suggest that the mutation rendering the SC-haplotype non-functional might have occurred somewhere east of central Turkey.

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Section: Discussionmentioning

confidence: 99%

S-genotyping Supports the Genetic Relationships between Turkish and Hungarian Apricot Germplasm

Halász¹,

Pedryc²,

Erċışlı

et al. 2010

J. Amer. Soc. Hort. Sci.

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“…Koehne and Prunus mume (Siebold) Siebold & Zucc. (Ledbetter, ). In addition to apricot domestication for fruit consumption, wild species from the Armeniaca section have been also cultivated for ornamental purposes, such as P. mume that is currently cultivated all over East Asia (Zhang et al, ).…”

Section: Introductionmentioning

confidence: 99%

The complex evolutionary history of apricots: Species divergence, gene flow and multiple domestication events

et al. 2019

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Domestication is an excellent model to study diversification and this evolutionary process can be different in perennial plants, such as fruit trees, compared to annual crops. Here, we inferred the history of wild apricot species divergence and of apricot domestication history across Eurasia, with a special focus on Central and Eastern Asia, based on microsatellite markers and approximate Bayesian computation. We significantly extended our previous sampling of apricots in Europe and Central Asia towards Eastern Asia, resulting in a total sample of 271 cultivated samples and 306 wild apricots across Eurasia, mainly Prunus armeniaca and Prunus sibirica, with some Prunus mume and Prunus mandshurica. We recovered wild Chinese species as genetically differentiated clusters, with P. sibirica being divided into two clusters, one possibly resulting from hybridization with P. armeniaca. Central Asia also appeared as a diversification centre of wild apricots. We further revealed at least three domestication events, without bottlenecks, that gave rise to European, Southern Central Asian and Chinese cultivated apricots, with ancient gene flow among them. The domestication event in China possibly resulted from ancient hybridization between wild populations from Central and Eastern Asia. We also detected extensive footprints of recent admixture in all groups of cultivated apricots. Our results thus show that apricot is an excellent model for studying speciation and domestication in long‐lived perennial fruit trees.

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“…In apricot, each cultivar is usually restricted to a particular geographical area with certain ecological conditions, and low yields are obtained whenever particular cultivars are grown in other areas (Layne et al, 1996;Ledbetter, 2008). This narrow adaptability limits the expansion of most apricot cultivars to other regions and countries.…”

Section: Introductionmentioning

confidence: 99%

Anther meiosis time is related to winter cold temperatures in apricot (Prunus armeniaca L.)

Julian

Herrero

Rodrigo

2014

Environmental and Experimental Botany

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In temperate woody plants, flowering time is adjusted to the environmental temperature, and survival to cold winter temperatures is achieved through dormancy. But also chilling temperatures during dormancy are required for proper flower bud development and flowering. The time the flower bud remains dormant is both genetically and environmentally controlled, and is a major factor determining the adaptation of species and cultivars to particular ecological conditions because chilling requirements vary greatly among genotypes. Recently this adaptation is jeopardised with climate changing conditions. However, little is known on the biological milestones underpinning these events, and when differences in flowering time are established. In this work we evaluate the hypothesis that anther meiosis time is related to winter cold temperatures, and that differences in flowering time are set up by differences in the time when pollen meiosis occurs. For this purpose, anther development has been characterized in five apricot cultivars with different chilling requirements. The work was done over two years with different weather conditions, a cold and a mild winter. The sporogenous tissues differentiated prior to dormancy and remained in this apparently quiescent stage during the winter. Once chilling requirements were fulfilled, meiosis closely followed and was highly correlated to breaking of endodormancy. Meiosis was completed within one week and was followed by a change in the colour of the anthers from green to yellowish, which could be a useful visual indicator to know that breaking of endodormancy had already occurred. The fact that this sequence of events was consistent in all the cultivars, and different climatic years analyzed, supports the hypothesis that winter cold temperatures are related to the time of pollen meiosis, which in turn reflects in different flowering times.

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Apricots

Cited by 22 publications

References 101 publications

S-genotyping Supports the Genetic Relationships between Turkish and Hungarian Apricot Germplasm

S-genotyping Supports the Genetic Relationships between Turkish and Hungarian Apricot Germplasm

The complex evolutionary history of apricots: Species divergence, gene flow and multiple domestication events

Anther meiosis time is related to winter cold temperatures in apricot (Prunus armeniaca L.)

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