Articles
THE ELIMINATION OF MYCOPLASMA-LIKE ORGANISMS FROM PEAR BUDWOOD BY HOT WATER TREATMENT
Article number
309_39
Pages
271 – 274
Language
Abstract
Budsticks of 2 year old pear seedlings were monitored in late summer for the presence of the MLOs associated with Parry’s disease of pears which has many similarities with pear decline.
Budsticks were immersed in a water bath at temperatures of from 42.5°C to 50.0°C for periods of from 30 to 240 min.
Buds survived at 47.5°C for 30 min, 45.0°C for 60 min and 42.5°C for 240 min.
MLOs could not be detected 14.5 months later in seedlings budded with material from these treatments.
A high proportion of buds from untreated control material transmitted MLOs to the pear seedling rootstocks which they were budded onto and caused symptoms in growth from the top bud of the indicator variety Precocious.
It may be possible to use this simple therapy technique, which has been little used in recent years, as an alternative quarantine measure for selected MLOs such as pear decline.
Budsticks were immersed in a water bath at temperatures of from 42.5°C to 50.0°C for periods of from 30 to 240 min.
Buds survived at 47.5°C for 30 min, 45.0°C for 60 min and 42.5°C for 240 min.
MLOs could not be detected 14.5 months later in seedlings budded with material from these treatments.
A high proportion of buds from untreated control material transmitted MLOs to the pear seedling rootstocks which they were budded onto and caused symptoms in growth from the top bud of the indicator variety Precocious.
It may be possible to use this simple therapy technique, which has been little used in recent years, as an alternative quarantine measure for selected MLOs such as pear decline.
Authors
A.N. ADAMS, D.L. DAVIES
Keywords
Online Articles (60)