PNABD246.pdf

transmission. Pre- and post-acquisition fasting did not influence the
transmission efficiency of the virus. There was no evidence of transovarial
transmission. None of the 13 varieties tested were found resistant to the virus
infection although they differed in their degree of tolerance. Three sprays of
Anthio at 0.2 per cent, reduced the yellow mosaic incidence significantly. [AS]
*0180 Singh, R.N. 1979. Natural infection of bean (Phaseolus vulgaris) by
mung bean yellow mosaic virus. INDIAN JOURNAL OF MYCOLOGY AND PLANT PATHOLOGY,
v.9(i):124-126. [En] (REP.MB-2246)
A yellow mosaic on bean is described and shown to be the same as mungbean
yellow mosaic virus. The host range of the disease includes Vigna mungo, V.
radiata, V. aconitifolia, Phaseolus acutifolius, P. lathyroides, Glycine max,
Dolichos biflorus, and Cajanus cajan. Variety Big bend red was found to be high
yielding and resistant to the disease, as well as to bean common mosaic and a
virus disease causing a curly top symptom. Germpla~m entries Internor, VT 36,
Dry Vine and VT 114 Dry Vine were found immune, and entries VT Ill Dry Vine,
Idelight Green, P 320-A-L, P 24-A-L, P 498-A-L, P 337-A-L, P 5 I-L, P 426-A-L,
P 6-C-L, and VL 1-12 were resistant. [EMS]
*0181 Vohra, K. ; Beniwal, S.P.S. 1979. Effect of mungbean yellow mosaic
virus on yield and seed quality of urdbean [Vigna mungo (L.) Hepper]. SEED
RESEARCH, v.7(2):168-174. [En] [En Abstj (REP.MB-2639)
Effect of mungbean yellow mosaic virus (MYMV) infection at different stages
of plant growth on the yield and seed quality of 'UL 2' blackgram (Vigna mungo)
was studied. MYMV significantly decreased the grain yield in infections up to
50 days after planting; insignificant losses in yield were caused by infections
at or after 60 days of planting. All the three yield contributing characters,
i.e., number of pods per plant, number of seeds per pod and 1000-seed weight,
significantly added to the reduction in yield due to MYMV infection. The MYMV
infection adversely affected the colour, texture and size of blackgram seeds.
Though seed germination was not affected, it was delayed in seeds produced from
plants infected at 10 days after planting. Seeds from infected plants contained
higher amounts of proteins and amino acids as compared with those from
non-infected ones. [AS]
*0182 Beniwal, S.P.S. ; Vohra, K. ; Verma, H.C. 1980. Effect of mungbean
yellow mosaic virus infection at different stages of plant growth on the amino
acid composition of urdbean (Vigna mungo L) seeds. INDIAN JOURNAL OF
EXPERIMENTAL BIOLOGY, v.18(3):302-303. [En] [En Abst] (REP.MB-2612)
Amino acid composition of seeds from healthy and mungbean yellow mosaic
virus (MYMV)-infected plants was determined. MYMV infection at different stages
of plant growth affected the total amino acid content and composition both.
Early infections, i.e., 10 and 30 days after planting (DAP) resulted in
considerable increase of total amino acids. Seeds from plants infected at 50
DAP showed a considerable decrease in amino acids whereas infection at 70 DAP
did not affect the total amino acid content of seeds. In all, 15 amino acids
were detected out of which 9 (lysine, histidine, arginine, serine, alanine,
valine, leucine, isoleucine, glycine) showed an increase, 4 (aspartic acid,
glutamic acid, tyrosine, phenylalanine) showed a decrease whereas 2 (threonine
and proline) remained unchanged in seeds from virus infected plants. [AS]
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