ศูนย์นวัตกรรมเทคโนโลยีหลังการเก็บเกี่ยว

The effect of GA3 on psoralens and on columbianetin, a phytoalexin associated with celery resistance to pathogens during storage.

Afek, U.

Advances in Horticultural Science, Volume 14, Number 4, 2000. pp. 189-192

2000

บทคัดย่อ

The effect of GA3 (20 mg/litre) on concentration of psoralens and the phytoalexin columbianetin involved in celery (Apium graveolens cv. Tender Crisp) resistance to pathogens (Botrytis cinerea, causing rot disease in celery) during storage was reported. After a month of storage at 1 deg C, incidence of celery decay increased from zero (before storage) to 35%, and the concentration of columbianetin decreased from 46 to 6 micro g g-1 fresh weight (FW). Concentration of psoralens during that time increased from 10 to 62 micro g g-1 FW. When celery was treated with GA3 prior to storage, incidence of decay increased to only 4%. Concentrations of columbianetin decreased to 23 micro g g-1 FW and those of psoralens increased only to 28 micro g g-1 FW.