Volume 30 Number 1 Article 20 Pages: 21-21
Year 1976 Month 1
Title: Fruit Rot Resistance in Red Raspberry
Authors: H.A. Daubeny and H.S. Pepin
Citation
Abstract:
Variations in postharvest resistance
to the fruit rot causal organisms, Botrytis
cinerea Pers. ex Fr. and Rhizopus
spp. (probably R. stolonifer (Ehr.
ex Fr.) Vuill) have been observed
among red raspberry (Rubus idaeus
L. ) cultivars and selections (clones).
Among the clones which have
shown resistance to B. cinerea are the
cultivars 'Cuthbert,' 'Meeker', 'Carnival'
and 'Matsqui', and two selections,
'676/4' and '6531/84', from the Scottish
Horticultural Research Institute
breeding program.
It is assumed that
the resistance to B. cinerea shown by
'Meeker', 'Carnival' and 'Matsqui' was
derived from 'Cuthbert'. The resistance
shown by '676/4' and '6531/84'
appears to be derived from the blackberry
(Rubus occidentalis L.), 'Cuthbert'
also appears to be a source of
resistance to Rhizopus spp.
The incidences of B. cinerea recorded
in the postharvest tests seem
to agree with preharvest observations
on the occurrence of organism.
The
postharvest tests have an advantage
over any sort of preharvest tests in
that incidences of Rhizopus spp. can
be detected.
Recent studies by Dr.
D.L. Jennings
at the Scottish Horticultural Research
Institute indicate that inheritance
of resistance to fruit rot caused
by B. cinerea is primarily due to additive
gene action.
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