Study On Introduction Adaptbility Of Russian Prunus Sibirica In Kazuo County

Because of its ecological adaptability,high economic value,apricot become an important ecological and economic tree species in western Liaoning.In order to cultivate high yield,antifreeze,drought resistance of apricot,and the economic benefit,we introduced the seeds and scion of Prunus sibirica from the Biekawa Border of Russia,and tested the breeding families and clonal seedlings in Kazuo located in western Liaoning.The introduction of Prunus Siberian has entered the first five years.In this paper,through the research of clonal seedling survival rate,preservation rate,growth,phenology,and the morphological traits and economic traits of Prunus sibirica,to discuss the introductional adaptation of Prunus sibirica.The results show:The preservation rate of the Prunus sibirica was the same as that of the survival rate.The survival rate of the clonal population was lower than that of the survival rate.The introduction of the Prunus sibirica was safe in the Kazuo area.The phenology of the Prunus sibirica was earlier than that of the Prunus sibirica.Especially in the deciduous period,compare with the local apricot,not only the defoliation of Pruns sibirica later about 30?45d,but also the growth period is shoter and stopping growth is earlier.The seedling height and ground diameter of the introductional family Prunus sibirica are lower than the local apricot,the seedling height and ground diameter of the clones were lower than the local apricot mostly.According to the seedling data,families 513,clones J510,J505 performed well.The shape of leaf tip of the introductional family Prunus sibirica was acuminate,the leaf shape was almost oval,the leaf base shape was wedge-shaped,the leaf surface was mainly hairy,the leaf back was mainly hairless.Branchlets color was brown and reddish brown,the fruit branches' lenght was middle branches.The other traits were basically the same as those of the families.The coefficient of variation of other traits was more than 25%in addition to tree height,leaf length and leaf width.In addition to leaf length and leaf width,the coefficient of variation of the clones' other traits was more than 20%.In addition to the low heritability of the tree height,the branch length,twig thickness,petiole length,the main branch base angle,the number of glands,leaf width,leaf length of the family heritability was 0.5 or more.In addition to the diameter and gland count,the repeatability of the other traits was more than 0.7.There were significant positive correlations between the ratio of complete flower and the fruit setting rate of the apricot clones,the highest fruit rate,the short fruiting branches,the middle branches and the long fruit branches were the lowest.Therefore,in the introduction of the apricot management,The results showed that the economic traits of clonal families were 519,523 and clones J511 and J513,and the main economic traits of the apricot were the same.More than 7%,of which the maximum coefficient of variation of the nuclear rate is 20.2%.The variability of the main economic traits of the clones was above 8%,among which the coefficient of variation was 46.9%,and the inheritance of the apricot was higher than that.Traits were more than 0.5 heritability.All of the 13 economic traits of the clones were higher than those of 0.7.The above results provide a scientific basis for cultivating improved apricot of high yield,antifreeze and drought resistance.