PNABD246.pdf

the typical lesions appeared. The difference in electrophoretic patterns
between the healthy and diseased plants was found to be greater in the
buffer-soluble proteins from hypocotyls. Changes in free amino acid content and
distribution indicated that the amino acid pool was considerably affected in
the early stage of disease development. Fourteen amino acids were identified in
the alcohol extracts of healthy and diseased seedlings by an amino acid
autoanalyzer. Among 14 amino acids, the amounts of lysine, histidine, glycine,
tyrosine, and phenylalanine were increased in diseased mungbean whereas those
of glutamic acid and alanine were decreased. Apparently, an increase in the
c tents of certain amino acids is in company with a decrease in a number of
orhers. A flow of the amino acids from cotyledons to axial parts was affected
by Rhizoctonia infection. The flows of leucine and phenylalanine were lessened
while those of histidine, arginine, alanine, and methionine were enhanced by
infection. The mobilization of arginine and methionine was particularly
remarkable. No qualitative differences, however, were observed in the
compositions of free amino acids between healthy and diseased plants. [AS]
*0495 Kaiser, W.J. ; Okhovat, M. ; Mossahebi, G.H. 1970. Hungbean
(Phaseolus aureus) damping-off and stem canker (Rhizoctonia solani).
FUNGICIDE AND NEMATICIDE TESTS, v.26:75. [En] (REP.MB-0473)
Dexon-Terraclor and Terraclor gave the best protection of mungbean
seedlings against damping-off due to Rhizoctonia solani, and were followed by
Demosan and thiabendazole. [EMS]
*0496 Kaiser, W.J. 1970. Rhizoctonia stem canker disease of mungbean
(Phaseolus aureus) in Iran. PLANT DISEASE REPORTER, v.54(3):246-250. [En]
[En Abstj (REP.MB-02O2)
A damping-off and stem canker disease of mungbean (Vigna radiata) incited
by Rhizoctonia solani reduced plant populations by 4-57% in experimental field
plots at Karaj, Iran. Mortality of seedlings resulted when hypocotyl lesions
enlarged or coalesced to girdle the stem. In the fields with a high incidence
of disease the inoculum potential of R. solani was highest in the top 10 cm of
soil and decreased rapidly with depth. The fungus could not be detected below
40 cm. No resistance was exhibited in 40 mungbean types in greenhouse tests.
[AS]
*0497 Ragunathan, V. 1970. Root rot of Arachis hypogaea seedlings caused by
Pythium debaryanum. CURRENT SCIENCE, v.39(2):44. [En] (REP.MB-2463)
Pythium debaryanum causing root rot of peanuts also infected Brassica
juncea, B. oleracea, Crotalaria juncea, Cyamopsis tetragonoloba, and Vigna
mungo. [THH]
*0498 Grewal, J.S. ; Pal, M. 1971. Report of the work done on diseases of
arhar and dry root rot of mung during 1970. IN: Proceedings [of the] fifth
workshop on pulse crops. Hissar : Haryana Agricultural University. p.109-111
[En] (REP.MB-0874)
MEETING: Workshop on Pulse Crops, 5th -- Hissar, India, Mar 18-20, 1971
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