บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Effects of exogenous ABA, GA3 and cell-wall-degrading enzyme activity, carotenoid content in ripening mango fruit.

Zhou YuChan; Tang YouLin; Tan XingJie; Guo JunYan;

Acta Phytophysiologica Sinica Year: 1996 Vol: 22 Issue: 4 Pages: 421-426 Ref: 8 ref.

1996

บทคัดย่อ

Effects of exogenous ABA, GA3 and cell-wall-degrading enzyme activity, carotenoid content in ripening mango fruit.

Mature-green mango cv. Zihua fruits harvested from a local farm near Guangzhou City, China, were dipped in ABA, GA3 or beta -carotene (all 5 mg/litre) and then stored at ambient temperature. Changes in carotenoid composition and enzyme activities during ripening were monitored. During ripening, polygalacturonase (PG) activity increased significantly then declined, while pectinesterase (PME) activity gradually decreased. Postharvest treatment with ABA caused an increase in PG activity, but GA3 treatment delayed the peak of activity. Neither ABA nor GA3 had a consistent effect on the changes in PME activity during ripening. GA3 treatment reduced the rate of carotenoid increase in contrast to ABA which increased it throughout ripening. Postharvest treatment with beta -carotene increased PG activity in ripening fruit. The possible relationship between colour development and PG activity is discussed.