Effects of life history traits on genetic diversity in plant species
Seven two-trait mixtures (e.g. breeding system and seed diffusion mechanism) of 5 life history characteristics were accustomed analyse interspecies variation within the level and distribution of allozyme genetic diversity in seed plants. extremely vital variations were seen among classes for all seven comparisons. organic structure and breeding system had extremely vital influences on genetic diversity and its distribution. despite different traits, outcrossing species attended be a lot of genetically numerous and had less genetic differentiation among their populations. [1]
Glacial Refugia: Hotspots But Not Melting Pots of Genetic Diversity
Glacial refuge areas are expected to harbor an oversized fraction of the intraspecies diversity of the temperate biology. to check this hypothesis, we have a tendency to studied plastid desoxyribonucleic acid variation in twenty two widespread European trees and shrubs sampled within the same forests. Most species had genetically divergent populations in Mediterranean regions, particularly those with low seed dissemination talents. However, the genetically most numerous populations weren’t placed within the south however at intermediate latitudes, a possible consequence of the admixture of divergent lineages colonizing the continent from separate refugia. [2]
Ecological consequences of genetic diversity
Understanding the ecological consequences of diversity may be a elementary challenge. analysis on a key part of diversity, genetic diversity, has historically centered on its importance in organic process processes, however classical studies in organic process biology, scientific agriculture and conservation biology indicate that genetic diversity may additionally have necessary ecological effects. Our review of the literature reveals important effects of genetic diversity on ecological processes like primary productivity, population recovery from disturbance, interspecies competition, community structure, and fluxes of energy and nutrients. [3]
The determinants of genetic diversity in butterflies
Under the neutral theory, genetic diversity is predicted to extend with population size. whereas comparative analyses have systematically didn’t realize sturdy relationships between census population size and genetic diversity, a recent study across animals known a robust correlation between propagule size and genetic diversity, suggesting that r-strategists that turn out several little offspring, have larger long-run population sizes. Here we have a tendency to compare genome-wide genetic diversity across thirty eight species of European butterflies (Papilionoidea), a bunch that shows very little variation in fruitful strategy. [4]
Genetic Diversity of Selected Upland Rice Genotypes (Oryza sativa L.) for Grain Yield and Related Traits
Seventy-seven upland rice genotypes together with well-liked cultivars in Nigeria and introduced varieties elite from across rice-growing regions of the globe were evaluated underneath best upland ecology. These genotypes were characterized for ten traits and therefore the quantitative knowledge subjected to Pearson matrix, Principal part Analysis and cluster analysis to work out the amount of diversity and degree of association existing between grain yield and its connected component traits. Yield and most connected part traits exhibited higher PCV compared to growth parameters. [5]
Reference
[1] Hamrick, J.L. and Godt, M.W., 1996. Effects of life history traits on genetic diversity in plant species. Philosophical Transactions of the Royal Society of London. Series B: Biological Sciences, 351(1345), pp.1291-1298. (Web Link)
[2] Petit, R.J., Aguinagalde, I., de Beaulieu, J.L., Bittkau, C., Brewer, S., Cheddadi, R., Ennos, R., Fineschi, S., Grivet, D., Lascoux, M. and Mohanty, A., 2003. Glacial refugia: hotspots but not melting pots of genetic diversity. science, 300(5625), pp.1563-1565. (Web Link)
[3] Hughes, A.R., Inouye, B.D., Johnson, M.T., Underwood, N. and Vellend, M., 2008. Ecological consequences of genetic diversity. Ecology letters, 11(6), pp.609-623. (Web Link)
[4] The determinants of genetic diversity in butterflies
Alexander Mackintosh, Dominik R. Laetsch, Alexander Hayward, Brian Charlesworth, Martin Waterfall, Roger Vila & Konrad Lohse
Nature Communicationsvolume 10, Article number: 3466 (2019) (Web Link)
[5] Anyaoha, C., Adegbehingbe, F., Uba, U., Popoola, B., Gracen, V., Mande, S., Onotugoma, E. and Fofana, M. (2018) “Genetic Diversity of Selected Upland Rice Genotypes (Oryza sativa L.) for Grain Yield and Related Traits”, International Journal of Plant & Soil Science, 22(5), pp. 1-9. doi: 10.9734/IJPSS/2018/40406. (Web Link)