Role of abscisic acid in perianth senescence of daffodil (Narcissus pseudonarcissus"Dutch Master").

Daffodil (Narcissus pseudonarcissus L. 'Dutch Master') flowers detached at the base of their ovaries and held with their cut ends in 10-100 microM abscisic acid (ABA) senesced prematurely. Symptoms of the ABA treatment included water-soaking of the tepals and early collapse of the corona.