Articles
DIFFERENCES IN SUSCEPTIBILITY TO FIREBLIGHT, ERWINIA AMYLOVORA (BURR.) WINSLOW ET AL., IN NON APOMICTICAL SPECIES, VARIETIES AND OECOTYPES OF COTONEASTER.
Article number
86_7
Pages
45 – 50
Language
Abstract
Segregating progenies from 15 species, varieties and oecotypes of the genus Cotoneaster showed different percentages of healthy plants after natural and artificial infections with Erwinia amylovora.
They also varied in respect of growth and shape, size and colour of foliage.
It may be possible to select resistant plants out of all progenies.
Not only resistant plants with ability to defense reactions but also tolerant plants seemed to be among the offsprings.
The tolerant ones must be separated by special tests, because they are sources of infection and can’t be used in a breeding programme for resistance to fireblight.
The observations do not confirm that there are close correlations between the growth of the plants and their susceptibility.
But perhaps a dark green foliage and resistance may be correlated.
These findings must be controlled by exact experiments.
They also varied in respect of growth and shape, size and colour of foliage.
It may be possible to select resistant plants out of all progenies.
Not only resistant plants with ability to defense reactions but also tolerant plants seemed to be among the offsprings.
The tolerant ones must be separated by special tests, because they are sources of infection and can’t be used in a breeding programme for resistance to fireblight.
The observations do not confirm that there are close correlations between the growth of the plants and their susceptibility.
But perhaps a dark green foliage and resistance may be correlated.
These findings must be controlled by exact experiments.
Publication
Authors
F. Persiel, L. Peters, W. Zeller
Keywords
Online Articles (15)