Effect of Polyamines and Salicylic Acid on Postharvest Lemon Quality
Inexpensive treatments that improve the shelf life of stored lemons and reduce economic loss are needed. The efficacy of polyamines (PAs) compared to GA3 combined with 2,4-D to maintain lemon fruit quality was quantified. Fruits from three orchards were treated by submersion in spermidine (Spd) or spermine (Spm) (100 mg/L) for 2 or 6 mins or salicylic acid (400 mg/L) for 6 mins. All fruits were waxed Stay Fresh 705 with Imazilil? (IMZ) , Freshguard 2 g/L . Control fruits were treated with wax + IMZ or wax + IMZ + GA3(50 mg/L) + 2,4-D (225 mg/L). After 8 weeks of storage (12℃), percent juice, total soluble solids and total acidity of spermine-and salicylic acid-treated fruit were equal to fruit treated with GA3 + 2,4-D. Fruits treated with spermidine (6 mins), spermine (2 mins) , or GA3 + 2,4-D had equal weight loss over 8 weeks. All treatments had equally low decay for 8 weeks; GA3 + 2,4-D and all polyamine-treated fruits had less decay at week 10 than other treatments. With the exception of not maintaining fruit firmness and not delaying peel or button color development through 8 weeks of storage as well as GA3 + 2,4-D, fruit treated with spermine for 2 mins were equal in all other quality parameters to GA3 + 2,4-D-treated fruit. Although spermine was not as effective as GA3 in delaying chlorophyll degradation and peel senescence, spermine could prove a cost-effective alternative to 2,4-D in the postharvest storage of lemons.
Plant growth regulators Spermidine Spermine Shelf life
Yusheng Zheng Mary Lu Arpaia Carol J. Lovatt
Dept. of Botany and Plant Sciences, University of California, Riverside, CA 92521 USA
国际会议
11th International Citrus Congress(第11届国际柑橘大会)
武汉
英文
1331-1336
2008-10-01（万方平台首次上网日期，不代表论文的发表时间）