Apple an important fruit crop in Kashmir ranks first in all
the fruits grown here. It is commercially the most important
horticultural crop grown in temperate parts of the world.
To control scab in Apple a lot of fungicides are being used
however, an alternative approach to fungicide application
is the use of scab resistant cultivars as a genetic stock.
Therefore, there is an urgent need to identify more cultivars
resistant to scab with maximum genes and can be used for
apple breeding. In view of this, one hundred apple cultivars
grown in Kashmir Valley were screened for the presence of
Vf gene conferring resistance against apple scab. Eight
trait linked markers were used so for and among them three
markers like AL07, AM19, and CH05e03 proved to be useful
to distinguish the resistant cultivars from the other apple
germplasm. These three markers have amplified resistant
fragments in five cultivars. Thus out of the total of 100
cultivars investigated in the present study, only five cultivars
namely Shalimar I, Shalimar II, Dubhour, Gold Spur, and
Crab apple were found to harbour resistant alleles which
may be resistant to some of the races of V. inaequalis.
Among the five cultivars harbouring the scab resistant
alleles for some races ofV. inaequalis, three cultivars namely,
Shalimar I, Shalimar II, and Dubhour, which contain the
maximum number of scab resistance alleles can be used as
parents in further breeding programms to develop more
resistant apple cultivars with high market acceptance.
Keywords: Malus × domestica, Apple scab, Vf gene, Venturia inaequalis
Article DOI: 10.31742/IJGPB.80.1.15
Print ISSN: 0019-5200
Online ISSN: 0975-6906
Jahangir Ahmad Dar, Sajad Majeed Zargar, Rameez Nazir Rather and Aijaz A. Wani info_circle