Studies On Overcoming Self-incompatibility Use Chenmical Treatment And Related Factors Of Fruit Quality In Korla Fragrant Pear

This thesis mostly to research into the use of chemical treatment overcoming self-incomlatibility of the Korla Fragrant pear,the effect on fruit quality by phytohormone And the A Ke Su area pear and the Korla pear's fruit quality difference were carried out comparison. The results are as follows:1.The results showed that six chemicals on the self-incompatibility of Korla Pear,which are treatment of stigma with sodium chloride and Boracic acid,the water solution extracted yali and dangshan pear flowers,Gibberellic,indole butyric acid and naphthalene acetic acid were effective in overcoming self - incompatibility in Korla fragrant Pear, a gametophytic self - incompatibility system. Sodium Chloride and Boracic acid,the water solution extracted yali and dangshan pear flowers were much better than other chemicals and check (diseilled water). The concent ration of the chemicals worked differently in the study,and the effective concent ration was the 5% and 0.3% of the sodium chloride and Boracic acid,1:10(M:M)of the water solution extracted yali and dangshan pear flowers.2.The treatments of spraying NAA,Eth and BR in medium stage of flowering that could improve the weight of single fruit and the total soluble soild contents. Uniconazole could improve the total soluble soild contents but reduce the weight of single fruit .All of GA,CPPU ,GA and 6BA could improve the weight of single fruit,but they increase Longitudinal/Sidewise diameter,calyx fruit and stickup end fruit .They decrease worth of the pear. The treatments of spraying CCC and IBA could not improve the pear's fruit quality.3. Soluble solids content ,Soluble sugars and Titration acidity of Korla Fragrant pear are better than A Ke Su's. The highest flower calyx rate is in Korla.There are lots of Stickup end fruit in A Ke Su. The treatments of spraying GA could not shed calyx to the flowers or defer shed calyx. These decrease to be worth of the pear. In A Ke Su Stickup end fruits are more than Korla. Maybe In A Ke Su soils have lots of GA .they change pears'figure .4. The proportion of rough pear is 90% and 10% in internal and external shoots,The peoportion of fruit shapes is different too.The titration acid contents are high and the total soluble solid contents are low in rough pear.