ศูนย์นวัตกรรมเทคโนโลยีหลังการเก็บเกี่ยว

Physiology of Botrytis infection in kiwifruit.

Sharrock, K. R.; Hallett, I. C.;

Acta Horticulturae Year: 1992 Vol: 2 Issue: 297 Pages: 551-558 Ref: 9 ref.

1992

บทคัดย่อ

The primary route of entry of B. cinerea into kiwifruit inoculated on the picking scar was via the vasculature of the stem and involved some rotting of the underlying sclerified mucro. B. cinerea was detected on the picking scars of at least 13% of fruit after grading and packing, but <1% of fruit of the same harvest developed aggressive stem-end rots. Mixing Botrytis spores with other picking scar microorganisms inhibited the growth of Botrytis on 30% of inoculated kiwifruit slices suggesting that microbial antagonists on stem scars may limit the establishment of B. cinerea. The germination of B. cinerea spores in fruit stem scars was reduced by curing fruit for 7 d at ambient temp. prior to inoculation. Samples of the stem plug and underlying fruit tissues, collected at harvest and during curing and cool storage, were screened for inhibitors of B. cinerea spore germination and hyphal growth. Potentially antimicrobial lysozyme/chitinase activity was detected in both tissue types, at levels which were unaffected by curing. This paper was presented at the Second International Symposium on Kiwifruit, held in Palmerston North, New Zealand, 18-21 Feb. 1991.