<div style="margin: 12px 0px; font-family: arial; color: #333333; background: #ffffff; border: solid 4px #e5e5e5; width: 100%; clear: left;"><div class="CM_CTB_Content_Wrap" style="margin: 0px; padding: 0px;background-color: #ffffff;"><div style="border-bottom: solid 1px #dcdcdc; white-space: nowrap; margin-bottom: 8px; background-color: #eeeeee ;background-image: url(http://clipmarks.com/images/source-bg.gif); background-repeat: repeat-x; height: 24px; line-height: 24px; vertical-align: middle; padding-bottom: 4px; color: #666666; font-size: 10px;" ><a href="http://clipmarks.com/clip-to-blog/" title="see clips that are hot right now"><img src="http://content.clipmarks.com/blog_embed/6f779061-16c2-42d1-8cae-ca8f1839c49e/0427D631-E03E-448A-AFC3-B65B672532A8/" alt="" width="19" height="19" border="0" style="vertical-align: middle; margin: 0px 4px; display: inline; border: none; float:none;" /></a>clipped from <a title="http://www.scientificamerican.com/article.cfm?id=chestnut-trees-return" href="http://www.scientificamerican.com/article.cfm?id=chestnut-trees-return" style="font-size: 11px;">www.scientificamerican.com</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.scientificamerican.com/article.cfm?id=chestnut-trees-return">The imposing 100-foot American chestnut tree that once dominated forests in the eastern U.S. may soon return, fortified by a new resistance to an Asian fungus. That blight essentially wiped out the tree during the past century, altering entire forest ecosystems. Scientists are releasing a sixth-generation hybrid this year for planting in several locations, confident that it will show the resistance of its hardy Chinese cousin.</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.scientificamerican.com/article.cfm?id=chestnut-trees-return">The hybridization began decades ago, when breeders crossed the American and Chinese chestnuts to obtain the resistance genes.</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.scientificamerican.com/article.cfm?id=chestnut-trees-return"> The sixth generation should now have about 94 percent American character and “should have high resistance to the blight,”</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.scientificamerican.com/article.cfm?id=chestnut-trees-return">If the sixth generation shows the required resistance, Fitzsimmons foresees chestnut trees being available in garden centers in about 25 years. And with oaks in decline because of gypsy moth infestation, the reemergence of hardy chestnuts would provide prodigious quantities of nuts for animals and valuable <A href="http://www.scientificamerican.com/topic.cfm?id=biodiversity">biodiversity</A>.</blockquote></div><div style="margin: 0px 6px 6px 4px;"><table style="font-size: 11px;border-spacing: 0px;padding: 0px;" cellpadding="0" cellspacing="0" width="100%"><tr><td style="background:transparent;border-width:0px;padding:0px;">&nbsp;</td><td align="right" style="background:transparent;border-width:0px;padding:0px;width:107px" width="107"><a href="http://clipmarks.com/share/0427D631-E03E-448A-AFC3-B65B672532A8/blog/" title="blog or email this clip"><img src="http://content7.clipmarks.com/images/c2b-foot.png" border="0" alt="blog it" width="107" height="17" style="border-width:0px;padding:0px;margin:0px;" /></a></td></tr></table></div></div>

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