PNABD246.pdf

plant growth. Maximum emergence of mungbean and c ,wpea seedlinga was obtained
from seeds treated with captan. Captan was the most effective fungicide in
protezting uungbean against foliar diseases, whereas PCNB was the most
effective for blackgram. [THHJ
*0353 Khare, M.N. ; Jain, N.K. ; Sharma, H.C. 1970. Variation among
Rhizoctonia bataticola isolates irom urid bean plant parts and soil [Abst.j.
PHYTOPATHOLOGY, v.60:1298. [En] (REP.MB-0579)
MEETING: Annual Meeting of the American PhytopaLhological Sc. iety -- HoL
Springs, AR, USA, Oct 4-8, 1970
Rhizoctonia hataticola was found associated with root, stem, pod, and seeds
of blackgram (Vigna mungo). Six ioolates from various plant parts and soil
exhibited differeices in virulence. The soi] isoUate proved most pathogenic,
followed by the pod and root isolates. In vitro morphological studies at pH 6.5
and 25 C reveaied differences in growth patterns and *-clerotia size. When grown
on differential media (potato-dextrose agar without or with extracts from soil,
seed, root, stem, leaf tlisue, and oatmeal agar.., all six isolates differed
from each other in thtir growth patterns and rate cf growth. The soil isolate
had the least amount cf growth ia almost all media, and the pod isolate, the
most. The leaf isolate ueveloped the largest sclerctia (96 x 86 u) and the soil
isolate the smallest .79 x b3 u) after 72 hr. The isolates varied in their
growth rates at different temperature and pH levels. The best pH for growth of
all isolates was 5.5. The variation among the isoites may be due to various
biochemical processes in the plant parts. [AS]
*0354 Jhooty, J.S. ; Singh, Harjit 1972. Stability of bev-r-i in plants.
PHYTOCHEMISfRY, v.11(7):2207-2208. [En] [En Abst] (REP.'B-U362)
Unchanged benomyl and its breakdown product have been found in seedlings of
mungbean (Vigna radiata) treated with benomyl. (AS]
*0355 Jhooty, J.S. ; Bains, S.S. 1976. Hodification of the toxicity of
bwnomyl by seed exudates of mung. INDIAN JOURNAL OF MICROBIOLOGY, v.16:73-75.
[Eij jEo Abstj (REP.L13-2458)
Exudates from 10 g seeds of mungbean (Vigna radiata) collected at 27-28 C
and concentrated at 40-42 C were studied for their effect on the toxicity of
benomyl. Chlamydospore& or Fusarium solani f. phaseoli were used for toximetric
studies. Exudates greatly reduced the toxicity of benomyl. Exudates were
analysed chromatographically for auiao acids and sugars. Fifteen amino acids
and three sugars were identifieG. The amino acids added to benomyl gave three
types of reactions. Se~en amino acids. i.e. alanine, argiine, gamma-amino
butyric acid, glutamic acid, glycine, isoleucine and tyrosine decreased the
toxicity of benomyl, leucine and iysine increased the toxicity of benomyl
whereas the rest (except cystine) did not affect it. Glucose and sucrose
increased the toxicity of benomyl. [ASI
*03.56 Shukla, D.N. ; Bhargava, S.N. 1976. Some pathogenic fungi from pulses
and oil seed crops. NATIONAL ACADEMY OF SCIENCES, INDIA, PROCEEDINGS (SECTION
92