2012, 25(6): 773-779.
To study the genetic variation of slash pine (Pinus elliottii) resin components, 98 individual trees from 38 open pollinated families in Changle Forest Farm, Zhejiang Province, were selected for the determination of resin components and the hereditary correlation analysis, the result shows that slash pine resin contains ten kinds of monoterpene, namely α-pinene, β-pinene, camphene, α-phellandrene, β-phellandrene, β-myrcene, sabinene, tricyclene,estragole and trans-anethole, which altogether account for more than 9.86%. Analysis of variance indicates highly significant differences in all components except for estragole and tricyclene among the families (Pr=-0.46, P<0.01) between α-pinene and β-pinene. The resin acids mainly include twenty components in pimaric type acid and abietic type acid, namely: pimaric acid, palustric acid, sandaracopimaric acid, isopimaric acid, abieticacid, neoabietic acid, dehydroabietate, communic acid, levopimarate, pimaral, isopimaral, 8,12-abietadienoate, 8,15-abietadienoate, 8,13-abietadienoate, 7,13,15-abietatrienoate, 15-hydroxydehydroabietic acid, 8,15-pimarene, rimuen, isosteviol and kaurene, among which the abietic type acids is greater than the pimaric type acid, analysis of variance indicates highly significant differences in pimaric acid, isopimaric acid, abietic acid, neoabietic acid, pimaral, isopimaral, 8,12-abietadienoate, 8,15-abietadienoate, 7,13,15-abietatrienoate, 15-hydroxydehydroabieticacid, 8,15-pimarene, and rimuen, the estimated family heritability for these twelve resin acid components is between 0.50-0.81, the heritability is relatively stable.