Study On Characteristics Of Blooming And Seed Setting Of Wild Armeniaca Sibirica(L) Lam In Wei Zi Xia

This article using field observation method which taking wild Armeniaca sibirica(L.) Lam as experiment material, flowering phenology and the percentage of perfect flower were observed, and then survey statistics of all shoot type fruit setting rate after frost freezing injury.;This experiment also studied effects of pinching and spraying different concentrations of PP333, CCC, PBO treatments on fruit quality; summary the presence problems of wild Armeniaca sibirica( L.) Lam cultivation and production in this region and propose appropriate way to resolve after the field investigation.The main results were as follows:(1)Normal year, wild Armeniaca sibir ica flower buds in late March into the Flower bud expanding stage, Early or mid-April into the Sepal stage,the duration of initial bloom stage to flower drop stage need 6~9d,and the entire prosess takes 26~31d;(2) Rate of Imperfect flower is different in various types shoots; complete flower ratio descending is Long bearing shoot(68.67%)> Bouquet spur(66.45%)> Spur(65.67%)>Medium bearing shoot(60.33%)(3)Young fruit of various types of branches were injured varying degrees after low-temperature damage, Survey showed that young fruit of various types of branches freezing rate were increased signif icantly over time after 3d and 15 d of low-temperature damage,The largest injury increase is Medium bearing shoot, freezing rate increased from 60.86% to 93.96%, an increase of 33.10 percent, the smallest increase is Spur, freezing rate increased from 51.47% to 69.09%, an increase of 16.62%. Among all types of branches, short fruit setting rate highest for 5.43 percent, the lowest long fruit, only 1.24% after 15 d of freezing.(4) The results showed that three kinds of plant growth regulators and pinching treatments all has an impact on the quality of Armeniaca sibirica(L.) Lam. Different concentrations of PP333, CCC treatments can promote soluble solids content of Armeniaca sibirica(L.) Lam compared with control(ck), Different concentrations of PBO and pinching treatments can make the average fruit weight significantly higher than control(ck).(5) Investigation showed that there are many barriers which restricted wild Armeniaca sibirica(L.) Lam industrial production,such as frost damage flowering; the extensive and pest management; economic traits among strains vary greatly; working backward, production and marketing of touch, etc.Flowering suffered hypothermia frost freezing injury becomes a main factor of limiting cultivation and increaseing production yields of wild Armeniaca sibirica(L.) Lam. Therefore, the use of physical measures or plant growth regulators delayed or Foster late flowering types is crucial by means of breeding.