Suppression of Botrytis blight in cut rose flowers with gibberellic acid. Effects of exogenous application of abscisic acid and paclobutrazol
Orna Shaul, Y. Elad and N. Zieslin
Postharvest Biology and Technology Vol: 7 Issue: 1-2 Pages: 145-150.
1996
บทคัดย่อ
The postharvest development of Botrytis blight in rose flowers (Rosa × hybrida cv. Mercedes) was suppressed when flower buds were sprayed with 1 mM solution of gibberellic acid (GA3). The development of the disease was promoted by application of abscisic acid (ABA) and the suppressive effect of GA3 was reduced when GA3 solution was supplemented with ABA. The GA3-imposed suppression of Botrytis blight was enhanced by addition of paclobutrazol (PBZ) to the GA3 solution, but the development of the disease was not affected by PBZ alone. Germination of conidia and germ-tube elongation of Botrytis cinerea in vitro were unaffected by ABA and PBZ, whereas linear growth of fungal colonies was promoted by ABA but was inhibited by PBZ.