PNABD246.pdf

The effect of four sowing dates on the incidence of Alternaria leaf spot on
14 varieties of mungbeans was investigated. [THE]
*0394 Mew, I.C. ; Wang, T.C. ; Mew, T.W. 1975. Inoculum production and
evaluation of mungbean varieties for resistance to Cercospora canescens
[Abst.I. IN: Proceedings of the American Phytopathological Society, vol.l.
St. Paul, MN : The American Phytopathological Society. p.93 [En] (SB599.P7
v.1)
MEETING: Annual Meeting of the American Phytopathological Society, 66th --
Vancouver, Canada, Aug 11-15, 1974
Leaf spot of mungbean (Vigna radiata var. radiata) caused by Cercospora
canescens is a disease of major importance in various mungbean growing areas of
Southeast Asia. The pathogen produced conidia readily but not abundantly on
potato-dextrose agar. Agar medium containing carrot leaf juice was best for
sporulation by the pathogen followed by mungbean-leaf juice-oatmeal agar and
autoclaved carrot root discs. From 15 to 28 C the number of conidia formed was
directly correlated with temperature. Conidial production was promoted by
light. When a spore suspension (2000 conidia/ml) was applied to mungbean at
3-trifoliolate leaf stage in the greenhouse or field, symptoms were noted
within 7 days and lesions were suitable for disease evaluation in 10 to 12
days. Twenty-nine of 230 accessions of mungbean selected by AVRDC plant breeder
through yield trials were resistant to C. canescens in the field with
artificial inoculation. [AS]
*0395 Haware, M.P. ; Pavgi, M.S. 1976. Host range of two Protomycopsis
species from India. SYDOWIA: ANNALES MYCOLOGICI, v.29:272-274. [En]
(REP.MB-2765)
of 23 plant species inoculated, only Vigna mungo, V. radiata and V.
sinensis were susceptible to Protomycopsis phaseoli. [THH]
*0396 Haware, M.P. ; Pavgi, M.S. 1976. Cytology of chlamydospore
development in Protomycopsis species. CYTOLOGIA, v.41:459-465. [En] [En
Abstj (REP.MB-2389)
Observations on the nuclear behavior during chlamydospore development in
Vigna mungo and Sesbania grandiflora Pers. by Protomycopsis patelii Pavgi and
Thirumalachar and Protomycopsis thirumalacharii Pavgi, respectively, described
in detail. The vegetative cells and/or conidia from diploid mycelia are
pathogenic in the 2 species. Numerous chlamydospores typical of the species
form the terminal sporogenous cells of the permeating hyphate within the
infection epicenter. No vascular infection was noted. No haustoria were
developed by any of the species. Pathological effects were observed on the host
cells without any stimulation for cell multiplication and enlargement.
Comparison was made on chlamydospore development in species of allied genera in
the family Protomycetaceae. [AS]
*0397 Kotasthane, S.R. ; Agrawal, S.C. 1976. Control of foliar diseases of
mung bean (Phaseolus aureus) by fungicides. PESTICIDES, v.10(8):35-36. [EnJ
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