Genetics of red pine

Fowler, D. P.

doi:10.5962/bhl.title.87842

Cited by 18 publications

(15 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…A number of studies has shown that there is some morphological variation in red pine, but it is much less than that for almost all other conifers studied. Among populations, generally ≈ 10% of morphological variation is determined genetically by source population, as determined in provenance tests (common garden experiments) (Fowler & Lester 1970; Wright et al . 1972).…”

Section: Introductionmentioning

confidence: 99%

Geographic pattern of genetic variation in Pinus resinosa: area of greatest diversity is not the origin of postglacial populations

2001

View full text Add to dashboard Cite

Genetic diversity is low in natural populations of red pine, Pinus resinosa, a species that has a vast range across north-eastern North America. In this study, we examined 10 chloroplast microsatellite or simple sequence repeats (cpSSR) loci in 136 individuals from 10 widespread populations. Substantial variation for the cpSSR loci was observed in the study populations. The contrast with red pine's lack of variation for other types of loci is likely to be due to the higher mutation rates typical of SSR loci. The amount of variation is lower than that generally found for cpSSR loci in other pine species. In addition, the variation exhibits a striking geographical pattern. Most of the genetic diversity is among populations, with little within populations, indicating substantial isolation of and genetic drift within many populations in the southern half of the species distribution. The greatest diversity now occurs in the north-eastern part of New England, which is especially intriguing because this entire area was glaciated. Thus the centre of diversity cannot be the origin of postglacial populations, rather it is likely caused by admixture, most probably because of influences from two separate refugia. Furthermore, the pattern indicates that the spread of red pine since the last glaciation is rather more complex than usually described, and it likely includes more than one refugia, complex migration routes, and postglacial-retreat isolation and genetic drift among shrinking populations in regions of the present southern range.

show abstract

Section: Introductionmentioning

confidence: 99%

Geographic pattern of genetic variation in Pinus resinosa: area of greatest diversity is not the origin of postglacial populations

2001

View full text Add to dashboard Cite

show abstract

“…Ces propriétés biologiques permettent de prédire 30 à 40% des niveaux de diversité intrapopulation (Hamrick et al, 1992;Hamrick et Godt, 1990 (Ledig, 1988). Des résultats similaires ont été obtenus en Europe pour le hêtre (Comps et al, 1991) et le chêne sessile (Kremer et al, 1991 (Mosseler et al, 1991;Fowler and Lester, 1970 (Comps et al, 1987;Comps et al, 1990). Chez l'épicéa, Bergmann (1978) (Wright, 1976 (Arbez, 1994 …”

Section: Introductionunclassified

Diversité génétique et variabilité des caractères phénotypiques chez les arbres forestiers

Kremer¹

1994

Genet. Sel. Evol.

View full text Add to dashboard Cite

“…Observations of low genetic diversity in red pine have also been corroborated at higher levels of genetic resolution using random amplified polymorphic DNA analysis (Mosseler et al 1992a). Red pine appears to be genetically depauperate at biochemically detectable loci and for quantitative variation (Rudolf 1957;Fowler and Lester 1970), but mutations at genes controlling morphological traits such as branch angle have been observed (Fig. 4).…”

Section: Population Geneticsmentioning

confidence: 82%

“…isolated stands that result in a highly fragmented population structure. The patchiness of red pine populations is probably related to its highly specialized ecological/edaphic requirements, and its early successional position related to fire (Fowler and Lester 1970). Red pine has an ephemereal position on dry, coarse-textured soils where it can compete effectively with the more dominant species of the Boreal, Acadian, and Great Lakes-St. Lawrence forest ecoregions (Rowe 1972).…”

Section: Introductionmentioning

confidence: 99%

Life history and genetic diversity in red pine: implications for gene conservation in forestry

Mosseler¹

1992

The Forestry Chronicle

View full text Add to dashboard Cite

Red pine, Pinus resinosa Alt., is a suffusively rare species throughout its geographical range, occurring as small, highly fragmented populations. Such species are particularly vulnerable to the genetic and demographic stochasticity that can lead to local extinction and losses of genetic variation. Red pine illustrates the difficulty that species with long generation tlmes have in recovering genetic diversity once it has been lost. Tree species that lose their genetic diversity may not recover the genetic variation required for effective adaptive responses to environmental challenges. Population declines in rare tree species should be viewed with greater concern by forest managers because the loss of a tree species threatens ecological stability and future economic potential in areas of limited biodiversity. Newfoundland's red pine population provides an example for a broader discussion of concepts in population ecology and genetlcs useful in developing gene conservation efforts for tree populations characterized by fragmented distributions, small population sizes, and declining population numbers.Key words: population ecology, genetic diversity, gene conservation, metapopulation, reproductive success Le pin rouge, Pinus resinosa Ait., constitue une espbce relativement rare dans toute sa distribution gkographique, for-mant de petites populations grandement fragmentkes. ~n e telle espbce est particulibrement vulnirable en terme de gCnCticlue e t d e dkmographie stochastiques pouvant mener h une extinction locale et a des pertes de variation gtnttique. Le pin rouge illustre la difficult6 qu'ont les espbces a longue ptriode de genCration pour rCcupCrer la diversit6 gCnCtique qu'elles ont perdue. Les espbces arboricoles qui ont perdu leur diversite gCnCtique peuvent ne pas rCcupCrer la variation gCnCtique requise pour s'adapter de faqon efficiente aux conditions climatiques. Le dCclin des populations parmi les espbces d'arbres peu nombreux devrait &re perqu avec une plus grande inquiCtude chez les amCnagistes forestiers car la perte d'une espbce d'arbre menace . . la stabiit~ Ccologique et le pbtentiel kon&mique futur dans les rCgions a biodiversitC limitCe. Les populations de pin rouge de Terre-Neuve constitue un exemple pour une discussion plus tlaborke sur les concepts d'Ccologie des populations et sur I'utilitC de la gCnCtique dans le dCveloppement des efforts de conservation des populations arboricoles caractCrisCes par une distribution fragmentCe, une faible dimension des populations, et un nombre de population en dCclin.

show abstract

Genetics of red pine

Cited by 18 publications

References 4 publications

Geographic pattern of genetic variation in Pinus resinosa: area of greatest diversity is not the origin of postglacial populations

Geographic pattern of genetic variation in Pinus resinosa: area of greatest diversity is not the origin of postglacial populations

Diversité génétique et variabilité des caractères phénotypiques chez les arbres forestiers

Life history and genetic diversity in red pine: implications for gene conservation in forestry

Contact Info

Product

Resources

About