ศูนย์นวัตกรรมเทคโนโลยีหลังการเก็บเกี่ยว

Low post-harvest temperature reduces the collapsing of Primula vulgaris 'Dania Skarlagen'.

Hoyer, L.; Kristensen, K.;

Acta Horticulturae Year: 1991 Issue: No. 298 Pages: 287-295 Ref: 12 ref.

1991

บทคัดย่อ

P. vulgaris (cv. Dania Skarlagen) plants obtained from 9 different growers were subjected to 4 days' transport simulation at 18 deg C, followed by 36 days in an interior environment at 20 deg . The % of collapsed plants at the end of the experiment varied from 8 to 100, depending on the grower. A further experiment was carried out with 3 different growing conditions and 2 postharvest temperatures (13 deg and 20 deg for 42 days). The possibility of attack by sciarid larvae resulting in plant collapse was investigated using 2 insecticides [unspecified] and 8 control programmes. Growing condition had a significant effect on the number of collapsed plants. Plants moved late from the field to the greenhouse, with resulting frost damage, showed a higher % of collapsed plants compared with plants grown entirely in the greenhouse, or moved early from the field to the greenhouse. There was a significant difference between postharvest temperatures in the % of collapsed plants. On day 28 almost 50% of the plants held at 20 deg had collapsed compared with <15% at 13 deg . The cause of collapse seemed to be a primary attack by sciarid larvae, which the plants overcame. However, when plants were placed at 20 deg the damage resulting from the attack led to problems with water balance in the plant. The damage had no later influence at 13 deg .