Studies On Progeny Test, Breeding Material Selection & Propogation Technique Of High-yield Rosin Pinus Massoniana

Pinus massoniana is main coniferous species in Fujian, which is importantspecies of timber tree, rosin, paper manufacturing industry material, and it is majorresin tapping species of rosin export in China. More than 95% material of rosinproducts come from Pinus massoniana. With the reduction of natural Pinusmassoniana area, it's inevitable to build high-yield rosin Pinus massoniana materialforest base for development of rosin industry. This paper carry on asexual propagationtechnology and high-yield rosin Pinus massoniana unborn hereditary survey andselection of fine individual plant. The fallows are the main research findings:1. Rosin-producing capacity determination of grafting seed orchard of high-yieldrosin Pinus massonianaBy determining the rosin-producing capacity of primary seed orchard ofhigh-yield rosin Pinus massoniana, the result showed that discrepancy between 14groups of 3-repeat clones and 19 groups of 2-repeat ones was significant, the cloneaverage repeat capacity was 79.3-86.1%, and genetic gain was 66.9-86.1%. Byinvestigating the rosin-producing individual capacity of 108 clones in juvenile period,3 in 14 clones rosin-producing individual capacity were more than 20g/10cm, and 8 in14 clones were more than 10g/10cm.2. Rosin-producing capacity determination of high-yield rosin Pinus massonianaopen pollination filial generation superior treesBased on the determination of rosin-producing capacity of open pollination filialgeneration from high-yield rosin Pinus rnassoniana, it was observed thatrosin-producing capacity of 75% high-yield rosin Pinus massoniana, was higher thanthat of general ones. By genetic analyses among the families of progeny stands, it wasdiscovered that family heritability was 67.48%, genetic variation index was 0.745,and genetic gain was 68.33%.3. High-yield rosin Pinus massoniana superior tree open pollination genealogy & individual plant selectionBased on the determination of rosin-producing capacity of open pollination filialgeneration from high-yield rosin Pinus massoniana in Jianou &Longyan, it showed,all of the 19～20 year-old filial generation trees, there were five of plants whoserosin-producing capacity got ultrahigh first level(more than 26g/10cm), there wereeleven of plants whose rosin-producing capacity got ultrahigh secondlevel(20～25g/10cm), and there were twenty-two of plants whose rosin-producingcapacity got ultrahigh third level(15～20g/10cm).4. Fine rosin-producing capacity individual section of high-yield rosinPinus massoniana half sibsBy measuring rosin-producing capacity, tree height, DBHs of 33 plants of11-year-old high-yield rosin Pinus massoniana half sibs and reference tree's, theresult showed that 69.7% of families' 10cm long single knifing averagerosin-producing quality were 18.89g, more than the reference's which was 15.9g.The average rosin-producing capacity of No.22 family got 30.6g. 85.3% offamilies' DBHs were 11.86cm, more than the reference's which was 10.74cm, and42.4% of families' average tree height were 8.6m, higher than the reference'swhich was 8.4m. All these showed most families' rosin-producing capacity andDBHs are more than the reference's, but only 40% of families' tree height higherthan the reference's.5. Determining rosin-producing capacity of yong clone of high-yield rosinPinus massonianaWith determining 20 clones of rosin-producing capacity in 71 plants of 6year-old high-yield rosin Pinu massoniana, the result showed that the overall averageof 10cm long single knifing rosin-producing quality was 11.2g, standard deviationwas 3.68, and coefficient of differentiation was 32.9%. The result of analysis ofvariance indicated each clone's rosin-producing capacity was very remarkablediscrepant. Genetic variance of rosin-producing capacity of high-yield rosin Pinus massoniana clone, individual plant repetitive rate was 68.42%, average repetitive ratewas 88.47%, genetic gain was 39.11%.6. Determining rosin-producing capacity of high-yielding rosin Pinumassoniana half sibs & full sibs progenyThrough determining rosin-producing capacity of high-yielding rosin Pinumassoniana half sibs & full sibs progeny, it showed that the overall averagerosin-producing capacity of all families in 16 plants of 7 year-old half sibs progenywas 9.67g/10cm, among them, there were 8 families' more than the overall average.The hereditary statistical analysis of rosin-producing capacity of 21 plants' half sibshigh-yielding rosin Pinu massoniana showed that average hereditary capacity was78.21%, genetic gain was 61.46%, and it was middle level. Among 4 plants of7-year-old full sibs progenies, the individual rosin-producing capacity combinatedwith 43×16 by artificial pollination was 24.1g/10cm, the others were superior to10g/10cm. These illustrated the rosin-producing capacity of full sibs progenies wassuperior to that of half sibs ones..7. One year-old high-yield rosin Pinu massoniana branch cuttingexperimentIn order to explore cutting cultivate seedlings technology of high-yield rosinPinu massoniana, it was carried on contrast experiment, taken 1 year-old Pinumassoniana soft twigs as material, by designing orthogonal table L9(4)3 withincitation of regulator in all vegetation period, twig length, root dose consistency.After three months' cutting, through underground investigation, all factors of cuttingswere found to form callus. Variance analysis showed that all factors of tree standardotherness of cutting height, root size and quantity achieved significant or verysignificant level.8. Effect of high-yield rosin Pinu massoniana branch age and root power totake rootIn order to find cutting cultivate seedlings technology of high-yield rosin Pinu massoniana, three repetition and three split plot random contrast experiment wascarried on to analysis variance and mean value, and the result proved that three kindsof root power and their consistency was significant or very significant difference insurvival rate, average height of seedling.