The research conducted in 2010-2011 had
in view the behaviour of eight raspberry varieties
(Rubus idaeus) and 11 blackberry varieties
(Rubus fructicosus), of which 7 thorny and 4
thornless cultivars, exposed to yellow rust
(Phragmidium rubi idaei) and grey mould attacks
(Botrytis cinerea), in intensive cropping system.
The main aim of this study has been to
develop a cultivar for the Bacau area that is
resistant to phyto-pathogenic attacks (rust and
mould) and to breed it in the nursery, taking into
consideration the frequency (F%), intensity (I%)
and gravity of attack (GA) values.
The cultivars recommended for nursery
breeding, due to the fact that they have registered
the lowest attack degree (GA %), are Thornfree
(0.42%), Loganberry (0.2%), Evergreen (0.008%)
thornless blackberries and Arkansas 530 (0,08%),
Arkansas 535(0,531%), Arkansas 609(0,24%) for
thorny blackberries; as far as raspberry varieties
are concerned, their GA values ranged from
0.13% for Exploit to 0.14% GA in Newburg and
0.16% in English A1. |