Genetic differentiation within and among populations of chestnut (Castanea sativa Mill.) and wild cherry (Prunus avium L.)

Frascaria, N.; Santi, Frédérique; Gouyon, Pierre Henri

doi:10.1038/hdy.1993.91

Cited by 46 publications

(57 citation statements)

References 24 publications

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“…Furthermore, little genetic differentiation was observed between the two populations in terms of F ST and only somewhat increased segregation was supported in terms of G ST , a statistic which generally provides a higher estimate of differentiation. These findings are in accord with previous studies investigating among population structure in wild cherry (Frascaria et al, 1993;Mariette et al, 1997;Santi, 1988). Alleles found to be exclusive to either population were always at very low frequencies and always in a heterozygous state.…”

Section: Discussionsupporting

confidence: 83%

“…Previous studies employing isoenzymes have suggested that little, or at best weak, genetic structuration existed in wild cherry populations (Frascaria et al, 1993;Gö mö ry and Paule, 2001). However, our data differ strongly and the high Sp and F ij values observed in this study suggest that both pollen movement and seed dispersal are indeed limited in this species.…”

Section: Discussionmentioning

confidence: 99%

“…Earlier studies of French wild cherry, employing isoenzyme markers, revealed no significant levels of SGS (Frascaria et al, 1993). However, in a Slovakian wild cherry population, isoenzyme polymorphism did reveal significant levels of SGS in the first distance class examined (o36.8 m) (Gö mö ry and Paule, 2001).…”

Section: Introductionmentioning

confidence: 99%

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Distribution and fine-scale spatial-genetic structure in British wild cherry (Prunus avium L.)

et al. 2007

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Insights into the within-population spatial-genetic structure (SGS) of forest tree species, where little is known regarding seed and pollen dispersal patterns, enhance understanding of their ecology and provide information of value in conservation and breeding. This study utilised 13 polymorphic simple sequence repeat loci to investigate the impact of asexual recruitment, management regime and tree size on the development of SGS in wild cherry (Prunus avium L). Only 246 genotypes were identified in the 551 trees sampled, reflecting significant levels of clonal reproduction in both managed and unmanaged populations. Naturally regenerated wild cherry was spatially aggregated under both management regimes. However, in the managed population, sexually derived trees accounted for a greater proportion of the smaller size classes, whereas vegetatively produced trees dominated the smaller size classes in the unmanaged population. High overall SGS values (Sp 0.030-Sp 0.045) were observed when considering only sexually derived genets and kinship coefficients were significant up to the 120 m distance class for both populations. The inclusion of clonal ramets in the analysis significantly increased the overall SGS (Sp 0.089-Sp 0.119) as well as kinship coefficients in the 40-80 m distance classes, illustrating the dramatic impact of vegetative propagation on SGS in this species. Increased spatial aggregation and regeneration appeared to be concomitant with increased SGS in the 40 m distance class in the unmanaged population. Neighbourhood size estimates were relatively small for both populations and kinship coefficients were found to decline with distance under both management regimes, suggesting that common mechanisms may restrict gene dispersal in wild cherry.

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Section: Discussionsupporting

confidence: 83%

Section: Discussionmentioning

confidence: 99%

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Distribution and fine-scale spatial-genetic structure in British wild cherry (Prunus avium L.)

et al. 2007

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“…Secondo la densità e l'ampiezza delle popolazioni nelle differenti stazioni, sono stati esaminati in media 20 individui per provenienza, posti ad almeno 50 -80 m di distanza tra loro per evitare di campionare polloni radicali (Ghani & Cahalan 1991, Frascaria et al 1993, Ducci & Santi 1997. Le caratteristiche bioecologiche del ciliegio selvatico, specie a distribuzione sparsa, limitano la possibilità di campionare un ampio numero di piante adulte per ciascuna popolazione, contrariamente a quanto avviene per piante a comportamento sociale.…”

Section: La Popolazione DI Riferimentounclassified

“…In ambiente mediterraneo non è possibile identificare popolazioni pure, estese e continue di P. avium, ma solo piccoli gruppi (costituiti generalmente da poche piante madri e dai loro polloni radicali), o piante isolate (Ducci et al 1988, Pryor 1988, Santi 1988, Frascaria et al 1993, Ducci & Santi 1997. In natura, infatti, il ciliegio selvatico può presentare due diversi comportamenti: nei primi stadi successionali può essere una specie colonizzatrice, propagandosi rapidamente per polloni radicali, mentre in ecosistemi forestali più maturi (vicini al climax), partecipa alla formazione di cenosi miste, grazie alla disseminazione zoocora del seme (Gliddon et al 1987).…”

Section: Introduzioneunclassified

Management of genetic resources in the nursery system of wild cherry (Prunus aviumL.)

Proietti¹,

Ducci²,

Guerri³

et al. 2006

Forest@

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Management of genetic resources in the nursery system of wild cherry (Prunus avium L.).Knowledge of genetic and adaptive traits of reproductive materials used in the nursery system of wild cherry, could be an useful instrument to improve ecological and economic sustainability of plantation ecosystems. This work reports results from a research which the objectives were: 1) to study the genetic variation of a Prunus avium L. population, used for seed harvesting, through its multi-locus genotypes detected by starch gel electrophoresis; 2) to analyze the level of genetic variation within and among different steps in a commercial nursery system (basic population and sub-populations, seedlings aged S 1 T 1 and S 1 T 2 , plantation). Results showed low genetic variation levels of the basic population, similar to a reference system of other 12 wild cherry Italian populations and to other French and Caucasian materials. The genetic distances among Monte Baldo and some closer Lombardy provenances (Area Garda, Bosco Fontana, Valtellina) were smaller than the Venice Region populations (Monti Lessini and Asiago). Number of alleles and percentage of polymorphic loci within the complex of Monte Baldo provenance and multiplication materials were similar, whilst a variable value of Fis was noted. Indeed, along with the nursery system until the plantation, heterozygosis initially (S 1 T 1 ) increased, then decreased proceeding to the plantation. This fluctuation of F IS values could be determined by seed lots characterized initially by higher levels of variation, due to self-incompatibility. In the following steps, a possible selection pressure can affect randomly the genotypic structure of wild cherry by increasing the homozygosity. There is not among population a well defined geographic characterization, as suggested by genetic distances, therefore homogeneous seed harvest could be established an area larger than geographic and administrative borders. On this way we could have reproductive material with a wide genetic base and environmental adaptability. To increase variability in the progenies, populations characterised by wider cross pollination rates should be selected, harvest seed by all plants of population, reduce selection on seedlings during nursery growth.Keywords: P. avium, Nursery system, Genetic variation, Isozymes. Introduzione L'adattabilità e la sostenibilità di un ecosistema naturale o artificiale è legato al livello di diversità in esso presente (Namkoong 1998, Tessier du Cros et al. 2000. Questa assume grande importanza nelle specie forestali poiché, a causa della lunghezza del loro ciclo biologico, sono maggiormente esposte a rischi determinati dall'ambiente circostante. Un'ampia variabilità genetica conferisce alle popolazioni naturali ed alle piantagioni migliore plasticità evolutiva e di adattamento ai possibili cambiamenti ambientali, sia biotici che abiotici.Il mantenimento di sufficienti livelli di variabilità è, quindi, uno degli elementi principali che deve considerare chi opera in vivaisti...

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Prunus

Potter¹

2010

Wild Crop Relatives: Genomic and Breeding Resources

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Genetic differentiation within and among populations of chestnut (Castanea sativa Mill.) and wild cherry (Prunus avium L.)

Cited by 46 publications

References 24 publications

Distribution and fine-scale spatial-genetic structure in British wild cherry (Prunus avium L.)

Distribution and fine-scale spatial-genetic structure in British wild cherry (Prunus avium L.)

Management of genetic resources in the nursery system of wild cherry (Prunus aviumL.)

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