บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Reduced ethylene synthesis in EFE antisense tomatoes has differential effects on fruit ripening processes.

Murray, A. J.; Hobson, G. E.; Schuch, W.; Bird, C. R.;

Postharvest Biology and Technology Year: 1993 Vol: 2 Issue: 4 Pages: 301-313 Ref: 17 ref.

1993

บทคัดย่อ

Reduced ethylene synthesis in EFE antisense tomatoes has differential effects on fruit ripening processes.

Modified tomato plants which express antisense RNA to the ethylene-forming enzyme (EFE) show greatly reduced ethylene synthesis. The ripening characteristics of fruits from homozygous antisense and control (cv. Ailsa Craig) plants were examined. Although the interval between anthesis and colour change was not altered, thereafter pigment formation was retarded in homozygous antisense plants, and in addition, the rate of loss of acidity was reduced. The softening rate was not inhibited during ripening, but was retarded in the over-ripening phase. Exogenous ethylene enhanced the coloration rate more in antisense fruits than in control samples, but had little effect on the softening rate. These results imply that the level of ethylene production has differential effects on the various ripening processes. The antisense fruits were less susceptible to damage during ripening and harvest, and survived in good condition for longer storage periods. However, the antisense fruits softened more rapidly when

harvested and stored at a constant 20 deg C than when ripened on the plant in the greenhouse.