{"id":{"repo_id":"vt","oai_identifier":"oai:vtechworks.lib.vt.edu:10919/64103"},"canonical_url":"https://search.dev.ndltd.org/etd/vt/oai:vtechworks.lib.vt.edu:10919/64103","repository":{"repo_id":"vt","name":"Virginia Tech","base_url":"https://vtechworks.lib.vt.edu/oai/request"},"display":{"title":"Distribution of dry matter production in twenty families of Virginia pine (Pinus virginiana)","abstract":"In the fall of 1963 seed was collected from 20 selected Virginia pine trees. The trees were selected in pairs of well- and poorly-pruned trees. Progeny (half-sib) derived from the 20 parent trees were sampled, at age nine, to determine if differences existed among the 20 families in the distribution of dry matter. Families differed in branch weight and cone weight but not in stem, stem bark, leaf, and total wood weight (stem + bark + branch weights). Proportionate distributions of stem, branch and stem bark dry weights were significantly different among the 20 families. Differences in proportionate distributions were shown to be independent of tree size but there were significant differences in distributions between progeny from naturally well and poorly pruned parents. Heritability (h²) estimates were calculated for those values which showed significant among family differences.","abstract_html":"In the fall of 1963 seed was collected from 20 selected Virginia pine trees. The trees were selected in pairs of well- and poorly-pruned trees. Progeny (half-sib) derived from the 20 parent trees were sampled, at age nine, to determine if differences existed among the 20 families in the distribution of dry matter. Families differed in branch weight and cone weight but not in stem, stem bark, leaf, and total wood weight (stem + bark + branch weights). Proportionate distributions of stem, branch and stem bark dry weights were significantly different among the 20 families. Differences in proportionate distributions were shown to be independent of tree size but there were significant differences in distributions between progeny from naturally well and poorly pruned parents. Heritability (h²) estimates were calculated for those values which showed significant among family differences.","abstract_has_math":false,"creators":["Matthews, James Allen"],"institution":"Virginia Polytechnic Institute and State University","degree_name":"Master of Science","degree_level":"masters","degree_discipline":"Forestry","degree_department":"Forestry","school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":1974,"date_issued":"1974","date_published":"1974","updated_at":"2026-07-22T22:20:09Z","subjects":[],"languages":["en"],"rights":["In Copyright"],"rights_urls":["http://rightsstatements.org/vocab/InC/1.0/"],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/10919/64103","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.department","label":"Department","values":["Forestry"]},{"key":"dc:creator","label":"Author","values":["Matthews, James Allen"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2015-11-13T20:44:39Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2015-11-13T20:44:39Z"]},{"key":"dc:date.issued","label":"Date","values":["1974"]},{"key":"dc:publisher","label":"Institution","values":["Virginia Polytechnic Institute and State University"]},{"key":"dc:type","label":"Dc Type","values":["Thesis"]},{"key":"dc:type.dcmitype","label":"Dc Type Dcmitype","values":["Text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Forestry"]},{"key":"thesis:degree_level","label":"Degree Level","values":["masters"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Master of Science"]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["Virginia Polytechnic Institute and State University"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language.iso","label":"Language (ISO)","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["In Copyright"]},{"key":"dc:rights.uri","label":"Rights URI","values":["http://rightsstatements.org/vocab/InC/1.0/"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["http://hdl.handle.net/10919/64103"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["In the fall of 1963 seed was collected from 20 selected Virginia pine trees. The trees were selected in pairs of well- and poorly-pruned trees. Progeny (half-sib) derived from the 20 parent trees were sampled, at age nine, to determine if differences existed among the 20 families in the distribution of dry matter. Families differed in branch weight and cone weight but not in stem, stem bark, leaf, and total wood weight (stem + bark + branch weights). Proportionate distributions of stem, branch and stem bark dry weights were significantly different among the 20 families. Differences in proportionate distributions were shown to be independent of tree size but there were significant differences in distributions between progeny from naturally well and poorly pruned parents. Heritability (h²) estimates were calculated for those values which showed significant among family differences."]},{"key":"dc:description.degree","label":"Dc Description Degree","values":["Master of Science"]},{"key":"dc:format.mimetype","label":"Dc Format Mimetype","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Distribution of dry matter production in twenty families of Virginia pine (Pinus virginiana)"]}]}],"canonical_facts":{"dc:contributor.department":["Forestry"],"dc:creator":["Matthews, James Allen"],"dc:date.accessioned":["2015-11-13T20:44:39Z"],"dc:date.available":["2015-11-13T20:44:39Z"],"dc:date.issued":["1974"],"dc:description.abstract":["In the fall of 1963 seed was collected from 20 selected Virginia pine trees. The trees were selected in pairs of well- and poorly-pruned trees. Progeny (half-sib) derived from the 20 parent trees were sampled, at age nine, to determine if differences existed among the 20 families in the distribution of dry matter. Families differed in branch weight and cone weight but not in stem, stem bark, leaf, and total wood weight (stem + bark + branch weights). Proportionate distributions of stem, branch and stem bark dry weights were significantly different among the 20 families. Differences in proportionate distributions were shown to be independent of tree size but there were significant differences in distributions between progeny from naturally well and poorly pruned parents. Heritability (h²) estimates were calculated for those values which showed significant among family differences."],"dc:description.degree":["Master of Science"],"dc:format.mimetype":["application/pdf"],"dc:identifier.uri":["http://hdl.handle.net/10919/64103"],"dc:language.iso":["en"],"dc:publisher":["Virginia Polytechnic Institute and State University"],"dc:rights":["In Copyright"],"dc:rights.uri":["http://rightsstatements.org/vocab/InC/1.0/"],"dc:title":["Distribution of dry matter production in twenty families of Virginia pine (Pinus virginiana)"],"dc:type":["Thesis"],"dc:type.dcmitype":["Text"],"thesis:degree_discipline":["Forestry"],"thesis:degree_level":["masters"],"thesis:degree_name":["Master of Science"],"thesis:institution_name":["Virginia Polytechnic Institute and State University"]},"updated_at":"2026-07-22T22:20:09Z"}