บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Effect of certain new ripening retardants on ripening in sapota (Manilkhara achras (Mill) Forsberg) cv. "Kirthabarthi".

Rao, D. V. R.; Chundawat, B. S.;

Indian Journal of Plant Physiology Year: 1992 Vol: 35 Issue: 2 Pages: 167-173 Ref: 9 ref.

1992

บทคัดย่อ

Effect of certain new ripening retardants on ripening in sapota (Manilkhara achras (Mill) Forsberg) cv. "Kirthabarthi".

The effect of 4 ripening retardants (1000 or 2000 p.p.m. menadione [vitamin K3], 500 or 1000 p.p.m. hydroquinone, 100 or 200 p.p.m. AVG and 2 or 4% ascorbic acid) on mature sapodilla fruits was investigated. Chemicals were applied as postharvest dips for 10 min. Treated fruits were dried, packed in thin bamboo baskets and stored at ambient temperature (26-30 deg C) and RH (60-70%) for up to 10 days. Ripe fruit percentage, fruit firmness, pulp catalase activity, respiration rate of pulp tissue and ethylene synthesis were measured during storage. Results show that untreated fruits were all ripe (100%) by day 7 compared with days 9-10 for treated fruits. In fruits treated with menadione and AVG, ripening rate was slow in terms of lower percentages of ripe fruits and greater fruit firmness; ripening was delayed by 3 days compared with untreated fruits. These treated fruits also exhibited a lower rate of catalase activity, respiration and ethylene synthesis, confirming retarded fruit ripening. Hydroq uinone and ascorbic acid treatments were less effective.