PNABD246.pdf
PNABD246.pdf
PNABD246.pdf
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inoculation periods required for whitefly adults (Bemisia tabaci<br />
become<br />
Genn.)<br />
infective<br />
to<br />
varied from 15 to 60 min and more, and 10 min to 60 min<br />
more,<br />
and<br />
respectively. The minimum incubation period of MYMV in the<br />
from<br />
vector<br />
3 to<br />
varied<br />
8 hr in different source-test host combinations. The hosts<br />
develop<br />
that<br />
yellow mottle reaction ("Mahaillupalam I" blackgram and "Jalgaon<br />
mungbean)<br />
781"<br />
were highly susceptible and better sources of MYMV than the<br />
that<br />
hosts<br />
develop necrotic mottle reaction ("UPU I" blackgram and "T<br />
The<br />
44"<br />
virus<br />
mungbean).<br />
was readily transmissible from mungbean to blackgram and<br />
MYMV<br />
vice<br />
was<br />
versa.<br />
transmissible from soybean to blackgram after a shorter feeding<br />
than from<br />
period<br />
blackgrata to soybean. The adults required longer acquisition<br />
inoculation<br />
and<br />
periods to infect "Bragg" soybean and "T 21" pigeonpea than to<br />
infect blackgram and mungbean. [ASJ<br />
*0173 Sivaprakasam, K. ; Jagadeesan, M. ; Kannapiran, C. ; Pillayarsamy, K.<br />
1976. Mineral content in the healthy and yellow mosaic infected black gram.<br />
AUARA: ANNAMALAI UNIVERSITY AGRICULTURAL RESEARCH ANNUAL, v.6:171-173. [En]<br />
(REP.MB-1901)<br />
Infection with mungbean yellow mosaic virus reduced nitrogen, phosphorus,<br />
calcium, and magnesium composition of leaves of blackgram, and increased their<br />
potassium composition. [EMS]<br />
*0174 Soria, J.A. 1976. Epidemiology of mungbean yellow mosaic virus in the<br />
Philippines. College, Laguna : Univ. of the Philippins at Los Banos. x, 71p.<br />
[Enj [En Abstj (Thesis - Ph.D. (Plant Pathology)) (SB608.M6S6)<br />
The epidemiology of an aphid-borne isometric virus causing a yellow mosaic<br />
disease in mungbean (MYMV) was established to be affected by weather<br />
conditions. During the wet season, the weather factors that limited MYMV spread<br />
were rainfall and wind speed, whereas, during the dry season these were high<br />
temperature, high solar radiation, longer phot:operiod and wind speed, not<br />
higher than 3 mph. While aphid infestations were observed at the onset of<br />
fiuwering, greater aphid population and MYMV infection, however, were more<br />
visible during the dry season than the wet season. Aphis craccivora Koch and<br />
Myzus persicae Sulz. vectored MYMV but the former, which colonizes on mungbean,<br />
was a more efficient vector. However, in both species, MYMV was non-persistent.<br />
in addition to it being aphid-borne, MYMV was also readily mechanically<br />
transmitted by sap and through the seed by about 4.97 to 98.39%, ret;pectively,<br />
from naturally field infected and artificially inoculated plants. The virus had<br />
a limited host range, infecting only legumes such as bush sitao (Vigna<br />
sesquipedales xv. sinensis), string beans (Vigna sesquipedales), patani<br />
(Phaseolus lunatus), Centrosema pubescens and kudzu [Pueraria phaseoloides<br />
(Roxb.) Benthj. The local lesion hosts were Vigna sinensis and Datura<br />
stramonium. [AS]<br />
*0175 Bhaktavatsalam, G. ; Beniwal, S.P.S. 1977. Note on auxin content in<br />
urdbean (Phaseolus mungo L.) infected mungbean yellow mosaic virus. PANTNAGAR<br />
JOURNAL OF RESEARCH, v.2(2):234-235. [En] (REP.MB-2424)<br />
A decrease in auxin content in mungbean yellow mosaic virus (MYMV) infected<br />
leaves was observed and could possibly explain reduction in leaf size and<br />
overall stunting of blackgram plants due to MYMV infection. (THH]<br />
44
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