บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Apple quality variation within the tree canopy at harvest.

Volz, R. K.; Hewett, E. W.; Woolley, D. J.;

Acta Horticulturae Year: 1993 Issue: No. 343 Pages: 56-58 Ref: 7 ref.

1993

บทคัดย่อ

Fruits from 2-year-old and one-year-old wood (lateral position) were harvested at random from Royal Gala, Braeburn and Granny Smith apple trees. Fruit size, internal ethylene, red colour, soluble solids and starch pattern index were determined. For Braebu

Fruits from 2-year-old and one-year-old wood (lateral position) were harvested at random from Royal Gala, Braeburn and Granny Smith apple trees. Fruit size, internal ethylene, red colour, soluble solids and starch pattern index were determined. For Braeburn and Granny Smith, Ca content was measured in these fruits and, for Granny Smith only, in fruits from one-year-old terminals. Leaf area/cluster from each position was also measured for Granny Smith. Internal ethylene concentration and starch pattern index scores were greater for fruits from 2-year spurs indicating that ripening and starch hydrolysis began earlier than for fruits from one-year laterals. Positional effects on red colour and soluble solids were similar for both wood ages and did not reflect fruit maturity differences. It was concluded that thinning fruits from one-year laterals should ensure that a more uniform population of fruits is present on the tree canopy at harvest and after storage. Terminal fruits appeared to have higher storage potential, based on Ca concentrations, than fruits from other positions.