บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Methyl jasmonate treatments reduce chilling injury and activate the defense response of guava fruits

Gonzalez-Aguilar G.A., Tiznado-Hernandez M.E., Zavaleta-Gatica R. and Martinez-Tellez M.A.

Biochemical and Biophysical Research Communications. Volume 313, Issue 3 , 16 January 2004, Pages 694-701

2004

บทคัดย่อ

Methyl jasmonate treatments reduce chilling injury and activate the defense response of guava fruits

Tropicalfruitscannot be stored at low temperatures due to thechilling injuryphenomena. With the goal of reducing thechilling injury,we tested 10-4 and 10-5 M of methyl jasmonate (MJ) treatment before the storage of red and white cultivars of guavafruitsat 5 °C for up to 15 days plus two days at 20 °C. Every five days, we evaluatedchilling injuryindex, ion leakage percentage, vitamin C, sugars, total phenols, and the activity of the enzymes lipoxygenase (LOX) and phenylalanine-ammonia lyase (PAL). We found that methyl jasmonate treatments reduce thechilling injuryindex and the ion leakage percentage. Furthermore, MJ did not affect vitamin C, chlorophyll, and total phenols. MJ increased sugar content, PAL, and LOX activities. We concluded that MJ reduceschilling injuryand activates thefruitdefense response as indicated by the behavior of total phenols and the increase in sugar content, PAL, and LOX activities.