บทคัดย่องานวิจัย

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Wound healing in potato tuber tissue: cultivar variation.

Mehta, A.; Kaul, H. N.;

Journal of the Indian Potato Association Year: 1994 Vol: 21 Issue: 3-4 Pages: 247-250 Ref: 9 ref.

1994

บทคัดย่อ

Wound healing in potato tuber tissue: cultivar variation.

ABSTRACT :

 

Undamaged tubers of similar physiological ages from a range of cultivars were selected and stored at room temperature from Mar. to June. Twenty tubers of each cv. were halved along the longitudinal axis and placed at 21-24 deg C and 90-94% RH to allow the wounds to heal. Sections were cut at right angles to the surface at 24-h intervals in tubers that had been suberized for different periods. Within an hour of cutting a crust of damaged cell remains, dirt and debris formed which offered little protection. Beneath the crust a 2-3 cell layer formed containing large deposits of suberin providing a temporary barrier to desiccation and pathogens. A permanent barrier of wound periderm then formed. Primary suberization occurred after 1 d, its thickness dependent upon cultivar. Wound periderm formation started after 3 d in all the cultivars except Kufri Sherpa and Kufri Bahar (4 d). The number of wound periderm layers varied between 1 and 6. Kufri Sherpa and Kufri Bahar had the slowest rates of wound he

aling with low suberization and wound periderm thickness. These cultivars also had the highest rates of physiological weight loss and rotting (67.5% and 33%, respectively) throughout the storage period.