PNABD246.pdf

*0201 Narayanasamy, P. ; Jaganathan, T. 1974. Characterisation of blackgran
leaf crinkle virus. MADRAS AGRICULTURAL JOURNAL, v.61(10/12):979-982. tEn]
[En Abst] (A:PS)
The blackgram leaf crinkle virus (BLCV) lost its activity at dilutions
above 1:5000, at temperatures above 60 C and after 48 hours in storage at room
temperature. The optimum pH was found to be 7.2. BLCV was antigenic, and
capable of reacting specifically with its antiserum. Of the 24 plant species
tested cowpea, cluster beans, mungbean, groundnut and redgram were infected by
BLCV. [AS]
*0202 Dhingra, K.L. 1975. Transmission of urid bean leaf crinkle virus by
two aphid species. INDIAN PHYTOPATHOLOGY, v.28:80-82. [En] [En Abst] (A:PS)
Aphis craccivora Koch. and Aphis gossypii Glov. proved to be the vectors of
a virus which caused crinkling of the leaves in blackgram (Vigna mungo Hepper).
A very short acquisition feeding period of 30 seconds to two minutes preceded
by a pre-acquisition fasting was found necessary for the successful
transmission of virus. The causal virus has close resemblance in symptomatology
to blackgram leaf crinkle virus reported earlier. [AS]
*0203 Kolte, S.J. ; Nene, Y.L. 1975. Host range and properties of urd bean
leaf crinkle virus. INDIAN PHYTOPATHOLOGY, v.28:430-431. [En] (A:PS)
All 52 plant species belonging to 10 different families were tested for
reaction to blackgram leaf crinkle virus. Out of All 52 plant species, only 3
plant species; viz., Vigna radiata, V. aconitifolia, and V. sinesis were
susceptible. The virus was found to be inactivated when sap from the infected
leaves was subjected to temperature ranging from 60 to 70 C for 10 minutes, or
when sap was diluted above 1.0E-4. Infectivity of the sap was retained for 3
days at room temperature, but was lost on the 9th day refrigeration (5 C). This
virus is considered to be distinct from those reported so far on blackgram.
[THHJ
*0204 Narayanasamy, P. ; Jaganathan, T. 1975. Effect of black gram leaf
crinkle virus infection on seed set and distribution of virus in the seeds.
MADRAS AGRICULTURAL JOURNAL, v.62(3):151-154. [EnJ [En Abst] (A:PS)
Blackgram leaf crinkle virus induced pollen sterility which ranged from
13.64 to 72.09% depending on the variety of blackgram. The significance of
pollen sterility as a limiting factor of yield is discussed. The study on
distribution of BLCV in the seeds of blackgram revealed that the virus was
present in the plumule, radicle and cotyledons of the germinating seed but not
in the seed coat. The virus was found at a higher frequency in the plumule. [AS]
*0205 Narayanasamy, P. ; Jaganathan, T. 1975. Studies on seed transmission
of black gram leaf crinkle virus: effect of age of plants at infection.
MADRAS AGRICULTURAL JOURNAL, v.62(5):287-290. [En] [En AbstJ (REP.MB-0674)
The experiments with blackgram plants inoculated with blackgram leaf
crinkle virus (BLCV) at 5-day intervals from 5 to 50 days of age showed that
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