Willow Varieties Selection Breeding

The research object of this experiment is22Willow clone,the ares of this research is White low-lyingforest Experimental Forest, Guan County Nursery Experimental Forest and Heze Dongming NurseryExperimental Forest, separately.This research was carried out the analysis of genetic variation, relevanceanalysis, cluster analysis for Willow clone growth traits of different age,and carried on Comprehensiveselection of multiple traits Combined with the adaptability. The main results were as follows:1. Comprehensive analysis of seedling seedling growth,we put nine clone in the Determination offorest,they were SH-24、SH-4、D1、D34、SH-13、D108、SH-19、2460、2464.2.In the three study plot,the tree height,DBH and individual plant quantity increment of Every groupWillow clone all to reach significant difference.This shows that clonal selection base on Liushulin pointsand individual section could notability improve amount of growth.The result shows the10in Whitelow-lying forest Experimental Forest and Guan County Nursery Experimental Forest2. Willow clones three experimental groups of clones to height, diameter and volume growth ofindividual volume reached significant or very significant differences.So they were Provided a wealth ofmaterial for Provides a wealth of material is best,the15,34and28in Heze Dongming NurseryExperimental Forest is best.3. Genetic variability analysis shows that there was Wide variability between different Willow clone.4. To conduct22Willow clone analysis of variance and multiple test of every different age pilotforest,the8,10,15each item index of White low-lying forest Experimental Forest,the10,28,8,15each itemindex of Guan County Nursery Experimental Forest, the34,15,28each item index of The DongmingNursery Experimental Forest outstanding representation.5. Correlation analysis showed that there was Highly significant correlation among Willow clone theeheight DBH and individual plant quantity increment. It can be concluded we can carry on preliminaryselection Accord6. Three trials to either willow tree height, DBH or individual volume broad heritability were high andstable,this shows that Clonal growth affected by the environment is weak, Subject to strong genetic control,the selection base on this is more reliable.7. Cluster analysis showed that8,10clones grow fast, have large volume, as a fast-growing timberClones Breeding material.8. Salt analysis showed that the survival rate of different clones cuttings and biomass accumulationhas a certain relationship, but little effect. Analytically, after NaCl stress, SOD,POD,MDA of differentwillow clone Change was not significant,show that Salt tolerance variation tendency between differentclone Basically the same.9. Willow clones of each phenology and resistance situation results from the observation, thephenology of22willow clone Basically similar.22willow clone have Resistance to diseases and pests, andlow temperature and drought resistant. 10. After a comprehensive analysis, we were elected relatively10,8,15good growth traits willowclones, separately.The tree height,individual plant volume and DBH of number10Willow clone is21.04m,0.058m3and22.1cm; The tree height,individual plant volume and DBH of number8Willow cloneis18.42m,0.045m3and20.27cm; The tree height,individual plant volume and DBH of number15Willowclone is18.55m,0.042m3and21.05cm. Compared to the control, volume genetic gain of3Willow clone is38.58%、29.01%、14.41%, separately.