【摘要】 [目的]寻找促进早熟温州蜜柑果皮转色且不降低品质和贮藏性能的方法。[方法]以"宫川"早熟温州蜜柑为试材,用不同浓度乙烯利和B9进行采前处理,研究处理后对果实贮藏过程中若干品质和贮藏性能的影响。[结果]试验表明,采前乙烯利处理贮藏前期果实可滴定酸含量下降较快,对可溶性固形物的影响主要表现在贮藏后期;贮藏15 d时,处理B(乙烯利250 mg/L)的转色指数达0.51,比CK高出0.19,乙烯利加速了果实贮藏过程中果皮叶绿素a和b的降解,促进了果实转色,而且较高浓度的乙烯利处理果实转色效果更明显;同时乙烯利处理也加速了果实的腐烂和水分的散失,贮藏20 d,处理B的腐烂率为17.39%,CK为2.90%,显著降低了果实的商品率;乙烯利和B9混合处理相对单一使用乙烯利能够降低腐烂速度和失水率,但转色效果不明显。[结论]采前乙烯利处理可促进果实转色,但也加速了果实水分的散失以及提高腐烂率,故适用于实际应用的处理浓度还有待进一步研究。更多还原

【Abstract】 [Objective]To find a better way to improve peel coloring and doesn’t decrease quality or storage properties.[Method]With earlymaturing mandarin"Miyagawa"employed as the plant materials in the field experiment,the plants were treated with different consistence of preharvest ethephon and B 9,the effect of ethephon and B 9 on the quality and storage of early-maturing mandarin"Miyagawa"was studied.[Result] The results showed that titratable acid content decreased quickly with pre-harvesting ethephon treatments,and effect on the soluble solid content mainly performed in the late storage time.Days 15,the index of yellow peel of treatment B(250 mg/L ethephon) is 0.51,which was 0.19 higher than the control,and ethephon treatments promoted the decrease of chlorophyll a and chlorophyll b contents,therefore enhanced peel color break,and higher concentration had the clearer effect.At the same time,ethephon treatments accelerated the fruit decay and water loss.Days 20,the rotten fruit rate of treatment B and the control are 17.39% and 2.90%,the treatments significantly decreased commodity rate;the treatments of ethephon and B 9 could decrease rotten fruit rate and water loss rate in compare to single ethephon treatment,but the effect of fruit coloration was not clear.[Conclusion]Pre-harvesting ethephon treatments can enhance peel color break,but also accelerate the fruit softening,decay and water loss,so the actual appropriate concentration needs further study.更多还原