ศูนย์นวัตกรรมเทคโนโลยีหลังการเก็บเกี่ยว

Phenology of fruit growth and susceptibility to grey mould (Botrytis cinerea) of strawberry, raspberry and blackcurrant.

Pappas, A. C.; Jordan, V. W. L.;

Annales de l'Institut Phytopathologique Benaki Year: 1997 Vol: 18 Issue: 1 Pages: 1-11 Ref: 14 ref.

1997

บทคัดย่อ

Under controlled environmental conditions, spore inoculation with B. cinerea followed by 24 h incubation at high RH, resulted in the establishment of a symptomless fruit colonization in strawberries and raspberries. The open-flower (petals fully relaxed) and petal-fall (all petals wilted and easily dislodged) stages in fruit development were the most susceptible, irrespective of inoculation with dry spores or spores in suspension, or pre- or post-harvest disease development. Lesions appeared on calyces when at least 3 successive days of high humidity followed inoculation: disease-induced flower abortion occurred only in strawberry, when such conditions were maintained for 7 days. In both hosts, the calyx components were the main pathways for initiation of fruit rot, whereas in raspberry the semi-dried residues of styles were of great importance. However, post-harvest rot development seemed less significant in raspberries than in strawberries presumably due to the harvested berry separation from

the calyx components. In black currant, only the 'open-flowers' and damaged ripening fruit were susceptible to spore infection. Symptomless fruit colonization initiated from inoculations at the earlier flower stages was not observed. All infected open flowers aborted when 24 h high humidity followed inoculation.