【摘要】：為探究采前鈣處理對黃金梨果頂硬化果實的影響,以黃金梨正常果實和果頂硬化果實為試材,對部分果頂硬化果實進行采前噴鈣處理,分別測定果實的貯藏特性和PpEXPA2基因表達量等指標。結(jié)果表明:2℃貯藏期間,正常果實、CaCl2處理果實及果頂硬化果實萼端的硬度、粘性、彈性、內(nèi)聚性和咀嚼性均呈先升高后降低趨勢,CaCl2處理果實萼端及柄端的硬度和咀嚼性均明顯低于果頂硬化果實;正常果實失重率最高,其次為CaCl2處理果實;CaCl2處理降低了果頂硬化果實的腐爛率,并抑制了果實的呼吸強度。貯藏180d,CaCl2處理果實的腐爛率和呼吸強度分別較果頂硬化果實降低了18.87%和59.70%;采收初期,PpEXPA2基因在果頂硬化果實中的表達明顯高于正常果實和果頂硬化果實,隨后下降,而正常果實和CaCl2處理果實中PpEXPA2基因的相對表達量均隨貯藏時間逐漸升高,采前CaCl2處理抑制了該基因的表達。
[Abstract]:In order to investigate the effect of preharvest calcium treatment on the fruit top sclerosing fruit of Golden Pear, the normal fruit and fruit top sclerosing fruit of Golden Pear were treated with calcium spray before harvest, and the storage characteristics and PpEXPA2 gene expression of some fruit top sclerosing fruits were measured respectively. The results showed that during storage at 2 鈩，

本文編號：2501746