บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Variation of abscisic acid, indole-3-acetic and ethylene in kiwifruit during fruit ripening.

Chen KunSong; Zhang ShangLong; Lu JunLiang; Chen QingJun;

Scientia Agricultura Sinica Year: 1997 Vol: 30 Issue: 2 Pages: 54-57 Ref: 6 ref.

1997

บทคัดย่อ

Variation of abscisic acid, indole-3-acetic and ethylene in kiwifruit during fruit ripening.

Kiwifruit cultivars Zaoxian (Actinidia chinensis) and Hayward (A. deliciosa) were used to investigate changes in levels of ABA, IAA and ethylene after harvest, and the effects of ABA treatment on fruit softening during ripening at 20 plus or minus 1 deg C. The peak values of endogenous ABA content appeared on the 3rd (Zaoxian) and 4th days (Hayward) after harvest. The highest rates of ethylene production were 301.71 plus or minus 29.13 and 49.67 plus or minus 16.36 micro l kg-1h-1, on the 8th and 14th days after harvest in Zaoxian and Hayward fruits, respectively, while endogenous IAA content in the fruits of the 2 cultivars declined quickly during ripening. The softening rate of Zaoxian fruits during ripening was much faster than that of Hayward fruits, and the fruit firmness of the 2 cultivars decreased to <1.0 kg/cm2 on the 9th and 14th days after harvest. Exogenous ABA treatment promoted ethylene production and fruit softening. Postharvest dipping in 3% CaCl2 significantly inhibited the incr

ease in endogenous ABA and markedly reduced the rate of fruit softening during storage. The results suggest that ABA may play an important role on the control of fruit softening in kiwifruits after harvest.