{"id":1548,"date":"2015-11-19T22:50:41","date_gmt":"2015-11-19T21:50:41","guid":{"rendered":"http:\/\/ist.blogs.inra.fr\/afs\/?p=1548"},"modified":"2015-11-19T22:50:41","modified_gmt":"2015-11-19T21:50:41","slug":"ranking-very-young-pinus-radiata-families-for-acoustic-stiffness-and-validation-by-microfibril-angle","status":"publish","type":"post","link":"https:\/\/ist.blogs.inrae.fr\/afs\/2015\/11\/19\/ranking-very-young-pinus-radiata-families-for-acoustic-stiffness-and-validation-by-microfibril-angle\/","title":{"rendered":"Ranking very young Pinus radiata families for acoustic stiffness and validation by microfibril angle"},"content":{"rendered":"<script type='text\/javascript' src='https:\/\/d1bxh8uas1mnw7.cloudfront.net\/assets\/embed.js'><\/script><p>&nbsp;<\/p>\n<div id=\"ASec1\" class=\"AbstractSection\">\n<p class=\"Para\"><strong class=\"EmphasisTypeBold \">Acoustic techniques can be utilised to rank a large population of young trees for stiffness and stability for breeding purposes.<\/strong><\/p>\n<\/div>\n<div id=\"ASec2\" class=\"AbstractSection\">\n<h3 class=\"Heading\"><em><strong class=\"EmphasisTypeBoldItalic \">Abstract<\/strong><\/em><\/h3>\n<p id=\"Par4\" class=\"Para\">This study sought to validate new approaches to rapid, very early screening and selection of radiata pine families, using microfibril angle (MFA) as a reference for comparative purposes. A key feature was tilting the trees at an angle of \u223c30\u00b0 after the initial 12\u00a0months of growth in order to force production of opposite wood (OW) and compression wood (CW) and prevent the co-mingling of the two distinctive wood types as occurs \u2018at random\u2019 within vertical stems. After 34\u00a0months, OW and CW materials were characterised independently for acoustic velocity (<em class=\"EmphasisTypeItalic \">V<\/em>), dynamic modulus of elasticity (MOE<sub>dynamic<\/sub>), basic density and longitudinal shrinkage. Finally, MFA were determined with X-ray diffraction. No phenotypic correlation was observed between OW and CW wood properties. The Spearman ranking correlation between <em class=\"EmphasisTypeItalic \">V<\/em> <sup>2<\/sup> and MFA values in OW was 0.81. We show that families or individual trees with superior wood properties can be screened at this young age using acoustics. Further, the same outcomes can be achieved as with X-ray diffraction (MFA) but more cheaply and rapidly.<\/p>\n<\/div>\n<div class='altmetric-embed' data-badge-type='donut' data-doi='10.1007\/s13595-015-0529-y'  style='float: right; ' ><\/div>\n<hr \/>\n<p><em>Publication<\/em><\/p>\n<p>Sharma M, Apiolaza L, Chauhan S, McLean JP, Wikaira J 2015. Ranking very young Pinus radiata families for acoustic stiffness and validation by microfibril angle. Ann. For. Sci.: 1-8. 10.1007\/s13595-015-0529-y.<\/p>\n<p><a href=\"http:\/\/link.springer.com\/article\/10.1007\/s13595-015-0529-y#\">Read the full paper<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>&nbsp; Acoustic techniques can be utilised to rank a large population of young trees for stiffness and stability for breeding purposes. Abstract This study sought to validate new approaches to rapid, very early screening and selection of radiata pine families, using microfibril angle (MFA) as a reference for comparative purposes. A key feature was tilting [&hellip;]<\/p>\n","protected":false},"author":35,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[15],"tags":[],"class_list":["post-1548","post","type-post","status-publish","format-standard","hentry","category-research-paper","cat-15-id"],"_links":{"self":[{"href":"https:\/\/ist.blogs.inrae.fr\/afs\/wp-json\/wp\/v2\/posts\/1548","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ist.blogs.inrae.fr\/afs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ist.blogs.inrae.fr\/afs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ist.blogs.inrae.fr\/afs\/wp-json\/wp\/v2\/users\/35"}],"replies":[{"embeddable":true,"href":"https:\/\/ist.blogs.inrae.fr\/afs\/wp-json\/wp\/v2\/comments?post=1548"}],"version-history":[{"count":0,"href":"https:\/\/ist.blogs.inrae.fr\/afs\/wp-json\/wp\/v2\/posts\/1548\/revisions"}],"wp:attachment":[{"href":"https:\/\/ist.blogs.inrae.fr\/afs\/wp-json\/wp\/v2\/media?parent=1548"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ist.blogs.inrae.fr\/afs\/wp-json\/wp\/v2\/categories?post=1548"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ist.blogs.inrae.fr\/afs\/wp-json\/wp\/v2\/tags?post=1548"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}