บทคัดย่องานวิจัย

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Fruit abscission and ethylene production of four blackberry cultivars (Rubus spp.).

Burdon, J. N.; Sexton, R.;

Annals of Applied Biology Year: 1993 Vol: 123 Issue: 1 Pages: 121-132 Ref: 19 ref.

1993

บทคัดย่อ

Fruit abscission and ethylene production of four blackberry cultivars (Rubus spp.).

The force required to harvest fruits of the cultivars Ashton Cross, Chehalem, Bedford Giant and Oregon Thornless declined during ripening. The fruit retention strength (FRS) of ripe fruits varied between cultivars, with Ashton Cross and Chehalem being easier to remove than Bedford Giant or Oregon Thornless. Ashton Cross and Oregon Thornless showed no increase in ethylene production during fruit ripening, whereas Bedford Giant and Chehalem had increased rates of ethylene production (EPR) in the ripe fruit. Exogenous ethylene accelerated abscission, ethylene production and pigment changes in Ashton Cross fruits at all stages of development. 1-Amino-cyclopropane-1-carboxylic-acid (ACC) supplied to fruits at all stages of development was converted to ethylene at levels far in excess of those occurring naturally during development. The differences between cultivars are discussed with reference to the role of ethylene in both machine harvesting and postharvest storage of blackberry fruits.