ศูนย์นวัตกรรมเทคโนโลยีหลังการเก็บเกี่ยว

3-Dimensional computer graphics for spatial analysis of plant architecture and fruit quality.

Smith, G. S. and Curtis, J. P.

Acta Horticulturae Year: 1992 Issue: No. 313 Pages: 61-64 Ref: 11 ref.

1992

บทคัดย่อ

Considerable variation in the incidence of postharvest kiwifruit losses occurs within and between fruit lines. To determine if the position of the fruit on the vine influences postharvest fruit quality, spatial distribution measurements were made (using an infrared beam theodolite) just prior to harvest on 6 kiwifruit vines (cv. Hayward, 8 years old) grown either on a T-bar trellis or on a pergola. Weight, soluble solids ( deg Brix), flesh firmness, incidence of fungal infection, water content, and macro- and micro-nutrient contents were determined for each fruit after 12 weeks' storage at 0 deg C. Data for each vine were stored in 5 separate files, which were used to provide a 3-D reconstruction of the original vine by means of MAPIT (Microcomputer Aided Plant Imaging Technology) software. Within-vine variation of fruit quality, according to spatial distribution on the vine, was shown clearly by colour coding for each of the physical, chemical and postharvest attributes. In pergola-trained vines, heavier fruits were located at the apical ends of canes, while greater soluble solids concentrations were associated with the smaller fruits located closer to the cordon. The patterns for T-bar-trained vines were similar except that soluble solids concentrations were lower, particularly in the fruits at the apical ends of canes, than in pergola-trained vines.