Mensuration And Evaluation On Superior Clones Of Siberian Apricot

The Siberian apricot is one of ecotypic and ecological drupaceous species with the resistance against drought, cold and barren. This study, based on the prophase study work on Siberian apricot choice and cultivation, was carried out in a contrast among the superior clones and between clones and their female parent, so that ascertained superior clones with the steady inheritance and good behavior. Main conclusions from the study were as follows:Through successive observation to efflorescence of Siberian apricot clones and regional female parent, discovered that the efflorescence of w1-w4 lated six days at least than general Siberian apricot, which inherited lating efflorescence character of female parent and had inheritance effect; The other clones did not manifest this character, so this character of their female parents was caused by environment.The economy characters of 12 clones and their female parents were significantly correlative, which proved that the economy characters did not change significantly after superior clones different region planted the same place.During the principal components analysis to nine economy characters of Siberian apricot superior clones, we educed two function expression of principal components: y₁=0.894x₁+0.288x₂-0.597x₃-0.733x₄-0.755x₅-0.346x₆+0.889x₇+0.968x₈+0.912x₉ y₂=0.395x₁+0.946x₂+0.735x₃+0.634x₄-0.506x₅-0.183x₆-0.331x₇+0.075x₈+0.059x₉The value of principal components can offer theory base for evaluating integrated index of economy characters.According the nucleus yield of prolific Siberian apricot clones from low to high, the sequence is: Feng5,Feng4,Feng3,Feng7,Feng9,Feng11,Feng8,Feng12,Feng6,Feng1,Feng2,Feng10. According nucleus weigh from high to low, the sequence is: Feng5,Feng2,Feng3,Feng12,Feng11,Feng7,Feng6,Feng4,Feng9,Feng8,Feng10,Feng1.The high and stable yield clones included Feng1,Feng2 and Feng10. Feng1 and Feng10 are frost resistence, Feng2 is escape from frost; The stable included Feng_f19 and KangDong4, KangDong4 is frost resistence, Feng_f19 is escape from frost; The high yield included Feng3,Feng4,Feng5,Feng6,Feng7,Feng8,Feng9,Feng11 and Feng12.The growth rule on top new branchs of Feng3,Feng4,Feng5,Feng7,Feng10,Feng11 showed curve 3S, The growth rule on top new branchs of Feng 1,Feng2,Feng6,Feng8,Feng9,Feng12 showed curve double S. The fruit showed two growth fastigium in the last ten days of May and the first ten days of July.The study of pollination biology character proved that there were eleven Clones in twelve clones, whose self-pollination setting was more than percent 6 and manifested high self-incompatibility and offered theory base for choosing good seeds and effectual cultivation.Peroxidase(POD)and polyphenol oxidase(PPO) isozyme of the leaves and peel of Siberian apricot were most active in the last ten-day of september. In every period, the POD and PPO isozyme of peel is more active than leaves. The number of POD isozyme band of peel is most abundant in July; The number of POD and PPO isozyme of the others is most abundant in September.POD and polyphenol PPO in the peels of 12 Siberian apricot clones were studied and the relationships were compared by clustering. If ten is the critical value, we can divide twelve clones into four genres: the first genre including Feng8,Feng10,Feng4,Feng6,Feng2,Feng12,Feng7,Feng5,Feng9; feng3,feng1,feng11 each composed the second genre,the third genre,the forth genre.