ศูนย์นวัตกรรมเทคโนโลยีหลังการเก็บเกี่ยว

Infection of plum and nectarine flowers by Botrytis cinerea.

Fourie, J. F.; Holz, G.;

Plant Pathology Year: 1994 Vol: 43 Issue: 2 Pages: 309-315 Ref: 25 ref.

1994

บทคัดย่อ

ABSTRACT :

The ability of B. cinerea to infect plum and nectarine flowers was studied in moist chambers and in the orchard. Within 36 h of inoculation, the pathogen penetrated and colonized the stamens, styles and petals on shoots placed in moist chambers, causing blossom blight. Similar lesion development was observed following inoculation with dry and wet conidia. Hyphae were usually distorted in stylar tissue, but grew normally in petals and filaments. Growth of the fungus through filaments into the sepals or floral tubes, or through the transmitting tissue of the style into the ovary, was never observed. Symptoms of blossom blight were not observed on inoculated shoots in the orchard. The floral tube, bearing the sepals and stamens, dehisced within 14 d of fruit set and infected floral parts did not remain attached to young developing fruit. No relation was found between postharvest decay and flower infection. It is suggested that losses following postharvest decay might have been caused by direct pene

tration of ripening fruit and not by flower infection. The importance of infected floral parts as a source of secondary inoculum on ripening fruit is discussed.