Enzyme variation in natural populations of Sitka spruce (<i>Picea</i><i>sitchensis</i>). 1. Genetic variation patterns among trees from 10 IUFRO provenances

Yeh, Francis C.; El‐Kassaby, Yousry A.

doi:10.1139/x80-067

Cited by 63 publications

(32 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…2). The variation within superior Sitka spruce clones seems high but lower than the variation within natural populations of Sitka spruce, which Yeh & El-Kassaby (1980) found to be 92 per cent using isozyme data.…”

Section: Discussionmentioning

confidence: 64%

“…Hamrick & Godt (1990) found gymnosperms to be among the most genetically variable of plant species. Within spruce species genetic variation seems high based both on isozyme (Yeh & El-Kassaby, 1980;Yeh et a!., 1986;Alden & Loopstra, 1987) and DNA studies (Mosseler et a!., 1992;Tulsieram et a!., 1992). High levels of genetic variation are important to safeguard against biotic and nonbiotic factors, especially in long-lived crops such as trees.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

The use of RAPD markers for the identification of Sitka spruce (Picea sitchensis) clones

Ven¹,

McNicol²

1995

Heredity

View full text Add to dashboard Cite

DNA from 57 superior clones was amplified using arbitrary primers in the polymerase chain reaction, in order to assess the genetic variation within Sitka spruce and to investigate if individual clones could be identified. Six out of 30 primers gave reproducible banding patterns. Twenty-four polymorphic bands were scored for the 57 clones studied and all the clones could be identified using a combination of four or more primers. Nei's estimate of similarity was calculated and cluster analysis was used to generate a dendrogram showing considerable variation among the superior trees. Clonally produced material (ramets) could be recognized and mislabelled ramets were identified.

show abstract

Section: Discussionmentioning

confidence: 64%

Section: Discussionmentioning

confidence: 99%

The use of RAPD markers for the identification of Sitka spruce (Picea sitchensis) clones

Ven¹,

McNicol²

1995

Heredity

View full text Add to dashboard Cite

show abstract

“…In addition, four alleles (G6P (2), IDH (3), and 6PG-2 (2), and (4)) were absent in the seed orchard; these alleles are either rare or unique in some of the natural stands. For example, G6P (2) and 6PG-2 (2) were absent in six populations, and IDH (2) and 6PG-2 (4) were absent in eight and nine populations, respectively (Table 1) (Yeh and El-Kassaby 1980). The seed-orchard population's levels of heterozygosity were consistently higher than those observed for the natural stands (Table 1).…”

Section: Sitka Sprucementioning

confidence: 90%

“…2). Clones were genotyped for 13 polymorphic loci using the methods described in Yeh and El-Kassaby (1980 natural stands that were investigated by Yeh and El-Kassaby (1980). Allele-frequency comparisons are listed (Table 1) for only seven loci that showed the presence or absence of some alleles.…”

Section: Sitka Sprucementioning

confidence: 99%

See 1 more Smart Citation

Domestication and genetic diversity — should we be concerned?

El-Kassaby¹

1992

The Forestry Chronicle

View full text Add to dashboard Cite

Despite the fact that forest trees are in their early stages of MalgrC le fait que les arbres forestiers en sont aux premikres domestication, there has been little direct evaluation of the Ctapes de la domestication, il existe peu d'information sur 1'Cvalugenetic diversity throughout this process. The dynamic changes ation directe de la diversit6 gCnCtique au cours du processus. in the genetic structure of wild conifers were monitored through Les changements dynamiques dans la structure gCnCtique des several bottlenecks, namely: phenotypic selection, seed orchards, coniferes indigknes ont Ct C observCs lors d7Ctapes dCcisionnelles, seed processing and storage methods, and seedling production.A savoir: la sClection phCnotypique, les vergers 2 graine, lesThe genetic structure of phenotypically vs. randomly selected mCthodes de manipulation et d'entreposage des semences, et la individuals of two conifers with known contrasting diversity production de semis. La structure gCnCtique d'individus cholevels is compared. The biology and management methods pracisis pour des raisons phCnotypiques ou au hasard parmi deux ticed in seed orchards are evaluated, and seed extraction and coniferes dont on a reconnu des niveaux marquis de diversitC, storage procedures are assessed to evaluate common practices est comparCe. La biologie et les pratiques d'amknagement on biological peculiarity. Finally, the cultural practices of conutilisCes dans les vergers a graine sont CvaluCes, de m&me que tainer nurseries were monitored and their impact on the genetic l'extraction des semences et les procCdures d'entreposage sont structure of future forests is evaluated.CtudiCes afin d'haluer l'effet des pratiques courantes sur les particularitCs biologiques. Finalement, les mCthodes de culture au sein des pCpinikres en contentant ont Ct C examinCes et leur impact sur la structure gCnCtique des futures for&ts est CvaluC.

show abstract

Genetic Diversity and Population Structure in Camellia Japonica L. (Theaceae)

Wendel

Parks

1985

American J of Botany

View full text Add to dashboard Cite

Camellia japonica is a widespread and morphologically diverse tree native to parts of Japan and adjacent islands. Starch gel electrophoresis was used to score allelic variation at 20 loci in seeds collected from 60 populations distributed throughout the species range. In comparison with other plant species, the level of genetic diversity within C. japonica populations is very high: 66.2% of loci were polymorphic on average per population, with a mean number of 2.16 alleles per locus; the mean observed and panmictic heterozygosities were 0.230 and 0.265, respectively. Genotypic proportions at most loci in most populations fit Hardy‐Weinberg expectations. However, small heterozygote deficiencies were commonly observed (mean population fixation index = 0.129). It is suggested that the most likely cause of the observed deficiencies is population subdivision into genetically divergent subpopulations. The overall level of population differentiation is greater than is typically observed in out‐breeders: The mean genetic distance and identity (Nei's D and I) between pairs of populations were 0.073 and 0.930, respectively, and Wright's Fst was 0.144. Differences among populations appeared to be manifested as variation in gene frequencies at many loci rather than variation in allelic composition per se. However, the patterns of variation were not random. Reciprocal clinal variation of gene frequencies was observed for allele pairs at six loci. In addition, principal components analysis revealed that populations tended to genetically cluster into four regions representing the geographic areas Kyushu, Shikoku, western Honshu, and eastern Honshu. There was a significant relationship between genetic and geographic distance (r = 0.61; P < 0.01). Analysis of variance on allozyme frequencies showed that there was approximately four times as much differentiation among populations within regions, as among regions. It is likely that the observed patterns of population relationships result from the balance between genetic drift in small subpopulations and gene flow between them.

show abstract

Enzyme variation in natural populations of Sitka spruce (Piceasitchensis). 1. Genetic variation patterns among trees from 10 IUFRO provenances

Cited by 63 publications

References 0 publications

The use of RAPD markers for the identification of Sitka spruce (Picea sitchensis) clones

The use of RAPD markers for the identification of Sitka spruce (Picea sitchensis) clones

Domestication and genetic diversity — should we be concerned?

Genetic Diversity and Population Structure in Camellia Japonica L. (Theaceae)

Contact Info

Product

Resources

About