The potential for genetic contamination vs. augmentation by native plants in urban gardens Export

@article{citeulike:3203740, abstract = {Native plants in gardens can potentially aid conservation by contributing to genetic diversity and buffering small and otherwise isolated populations from extinction. However, gene flow from such plantings may threaten the genetic integrity of natural populations. We assessed the morphological and genetic diversity of garden plants in an urban population of Grevillea macleayana in south-eastern Australia. There were two main groups of garden plants: some similar to plants in nearby natural populations; others with unusual morphology. Multivariate analysis of morphological characters separated these groupings, which were confirmed by genetic analysis. Both groups produced seeds and flowering phenologies overlapped, indicating a potential for gene flow. Hand pollination showed that plants in each group could fertilize flowers of the other. Thus, these garden plants contributed to genetic variation in an urban/bushland metapopulation but there was potential for gene flow from the unusual plants. Unless carefully managed, garden plants may therefore cause disruption of the genetic integrity of nearby natural populations.}, author = {Whelan, Robert J. and Roberts, David G. and England, Phillip R. and Ayre, David J.}, citeulike-article-id = {3203740}, citeulike-linkout-0 = {http://dx.doi.org/10.1016/j.biocon.2005.10.016}, citeulike-linkout-1 = {http://www.sciencedirect.com/science/article/B6V5X-4HMNG63-3/2/1672bd1d5dbba659aaafa02c232cf1a4}, doi = {10.1016/j.biocon.2005.10.016}, journal = {Biological Conservation}, keywords = {flora, garden, urban}, month = {April}, number = {4}, pages = {493--500}, posted-at = {2008-09-08 00:17:09}, priority = {2}, title = {The potential for genetic contamination vs. augmentation by native plants in urban gardens}, url = {http://dx.doi.org/10.1016/j.biocon.2005.10.016}, volume = {128}, year = {2006} }

TY - JOUR ID - citeulike:3203740 L3 - citeulike-article-id:3203740 N2 - Native plants in gardens can potentially aid conservation by contributing to genetic diversity and buffering small and otherwise isolated populations from extinction. However, gene flow from such plantings may threaten the genetic integrity of natural populations. We assessed the morphological and genetic diversity of garden plants in an urban population of Grevillea macleayana in south-eastern Australia. There were two main groups of garden plants: some similar to plants in nearby natural populations; others with unusual morphology. Multivariate analysis of morphological characters separated these groupings, which were confirmed by genetic analysis. Both groups produced seeds and flowering phenologies overlapped, indicating a potential for gene flow. Hand pollination showed that plants in each group could fertilize flowers of the other. Thus, these garden plants contributed to genetic variation in an urban/bushland metapopulation but there was potential for gene flow from the unusual plants. Unless carefully managed, garden plants may therefore cause disruption of the genetic integrity of nearby natural populations. IS - 4 JF - Biological Conservation EP - 500 TI - The potential for genetic contamination vs. augmentation by native plants in urban gardens VL - 128 SP - 493 KW - flora KW - garden KW - urban AU - Whelan, Robert AU - Roberts, David AU - England, Phillip AU - Ayre, David PY - 2006/04// UR - http://dx.doi.org/10.1016/j.biocon.2005.10.016 ER -