3th WCSET-2014 at Nepal
Applied Sciences Session:
Title:
Seed borne storage fungi of Cowpea: pathogenic to the
seedlings
Authors:
Puspaa Sinha, Amit Kumar Prakash
Abstract:
The radicle of approximately 80% of the seedlings raised
from the cowpea seeds stored with A.niger, A.flavus and
A.alternata at 80% RH, were shorter, curved with
blackened tip. Less per cent of the seedlings were
affected when the seeds were stored at 70% RH and none
when stored at 60% RH, and were comparable to the
control. The cotyledons of seeds stored at 80% RH were
afflicted with black/blackish brown necrotic lesions due
to all the storage fungi except A.alternata. 100% of the
seedlings were shorter due to storage of the seeds with
fungi at 80% RH, and the first leaf of 6 to 11% of
seedlings expressed twisting. Damping off was caused by
F.moniliforme. Other than this fungus caused drying of
apical bud in 4 to 9% of the seedlings. Total
chlorophyll, total soluble sugar and total free amino
acid were less in the seedlings stored with the noted
fungi at 80% RH. A.alternata proved to be the most
deleterious.
Keywords: Cowpea
seed, Storage fungi, Seedlings, Pathological symptoms.
Pages:
607-611