Effects Of Boron And Selenium On The Storage Quality And The Postharvest Physiology Of Nectarine Fruit

"yanhong14" and "hongshanhu" of nectarine fruit were used as the materials in the experiment. The treatments of experiment was spraying fruit with 0.2% H3BO3 ,0.2g Na2SeO3 and 0.2% H3BO3+0.2g Na2SeO3 at different developing stage of fruit.In the different storage stage of nectarine, Firmness, color, Respiratory, Ethylene, contents of Total soluble solid(TSS), Titratable acid, Vc, Cell ion leakage, Malondialdehyde(MDA) and activities of glutathione peroxidase (GSH-Px), Lipoxygenase (LOX) ,Peroxidase (POD) JPolyphenol oxidase (PPO) were analyzed . These nectarine fruit were treated with different treatment (B,Se,B+Se) and storage at (10±2)℃ and (2±1)℃.The results showed B, Se and B+Se treatments improved nectarine quality and storage-ability,whose soluble solids content(TSS), Vc, Titratable acid content and flesh firmness are significantly higher than that of control. B, Se and B+Se treatments' application could apparently decreased respiratory rate, ethylene production ,delayed senescence and ripe of preach fruit, and reduced the incidence of fruit decay and brown. By B, Se and B+Se treatments, the activities of GSH-Px was significantly increased, and Cell ion leakage, MDA accumulation ,the activities of LOX, POD, PPO were markedly decreased. Therefore, B, Se and B+Se treatments delayed fruit senescence and improved fruit storage-ability.Moreover, the results suggested that regulates Se and B+Se treatments were better than B treatment The interaction between Se and B+Se treatments and low temperature (2±1)℃ had marked effet. The storage-ability of "hongshanhu" was better than that of "yanhong14" .