PNABD246.pdf

Seed washings of a seed lot of mungbean revealed conidia of Alternaria
tenuis, Curvularia lunata, Drechslera rostrata, Fusarium equiseti and F.
semitectum. Normal seeds were green, well filled and germinated well. Normal
but slightly pale seed were found infected with D. rostrata, F. equiseti and M.
phaseoli, Grey to brown, wrinkled and badly deformed seeds were heavily
infected by F. equiseti. In using the blotter and agar plate procedures a large
number of fungi, namely Alternaria tenuis, Botryodiplodia palmarum, Cercospora
kikuchii, Choanephora sp., Colletotrichum truncatum, Corynespora cassiicola,
Curvularia lunata, Diaporthe phaseolorum var. sojac, Drechslera rostrata,
Fusarium equiseti, F. moniliforme F. semitectum, F. solani, Macrophomina
phaseoli, and Myrothecium roridum were found. F. equiseti and M. phaseoli were
the predominant fungi. only m. phaseoli is reported to attack Vigna radiata in
the field. All the other fungi isolated from the seed are new records of
pathogens for mungbean. In infection experiments Cercospora kikuchii,
Colietotrichum truncatum, Corynespora cassiicola, and Myrothecium roridum
caused serious leaf spotting in mungbean. In soil inoculation experiments
Botryodiplodia patmarum, Fusarium equiseti and Macrophomina phaseoli were the
most severe parasites producing seed rot and seedling blight. Diaporthe
phaseolorum var. sojae, F. moniliforne and F. solani also reduced seed
germination, while Myrothecium roridum had no effect on germination of seeds.
Seedlings, however, suffered a severe collar rot. [AS/THH]
*0556 Husain, S.S. ; Ahmad, M.A. L971. Studies on stored food grain fungi.
Part 4. Fungi from pulses. PAKISTAN JOURNAL OF SCIENTIFIC AND INDUSTRIAL
RESEARCH, v.14(b):507-511. [EnJ [En Abstj (REP.MB-2471)
The present investigation relates to the microorganisms infesting certain
pulses like Cyamopsis psoralioides DC (Guara), Vigna mungo Hepper (blackgram),
V. radiata Wilczek (mungbean), Cajanus indicus Spreng (Arhar), Lens esculenta
Moench (Masoor), Cicer arietinum L. (Desi chana), and Cicer arietinum L.
(Kabuli chana). Thirty-six species belonging to sixteen genera were isolated
from the above-mentioned pulses. Fungi Imperfecti was tile most dominant group
with an occurrence of 86X. The genus Aspergillus was most frequent in
contributing 12 species with a total prevalence of 60%. A. flavus, among tile
species of Aspergillus accounted for maximum damage 24%. Cicer arietinum (Desi
chana) was the most heavily infested pulse with an infestation of 98% of the
samples investigated while V. radiata was the least infested pulse with an
infestation of 45% of the samples studied. [ASJ
*0557 Agarwal, V.K. ; Mathur, S.B. ; Neergaard, P. 1972. Some aspects of
seed health testing with respect to seed-borne fungi of rice, wheat, blackgran,
greengram and soybean grown in India. INDIAN PHYTOPATHOLOGY, v.25:91-100.
[En] [En Abstj (REP.MB-1326)
Seeds of rice, wheat, blackgram, mungbean and soybean when tested for
seed-borne fungi by the blotter and the agar plate method, were found to be
associated with a range of fungi including some important pathogens known to
cause diseases of economic importance. The blotter method proved better than
the agar plate method for most of tile fungi. The three different incubation
conditions (20 C NUV, 28 C NUV and 28 C DL) proved equally effective.
Pretreatment with NaCIO (2X available chlorine) in Lhe agar plate method
reduced the percentage incidence of some pathogens. Thiram or captan as seed
treatment did not control the fungi completely although reduced seed-borne
fungi sufficiently. Thiram is not 100% fungicidal i action but acts also as a
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