Leaves (both young and mature) of seventeen commercial avocado (Persea amer
icana) cultivars have been analysed monthly throughout the year to measure
the concentration and seasonal variation of the antifungal diene (Z,Z)-2-hy
droxy-4-oxohenicosa-12,15-dien-1-yl acetate (persin). (C) 1999 Published by
Elsevier Science Ltd. All rights reserved.