RT Web Page DB /z-wcorg/ DS http://worldcat.org ID 852252098 LA English UL http://public.eblib.com/choice/publicfullrecord.aspx?p=1317644 T1 Plant virus and viroid diseases in the tropics. Volume 1, Volume 1, A1 Sastry, K. S., PB Springer PP Dordrecht; New York YR 2013 SN 9789400765245 940076524X 9400765231 9789400765238 AB Plant virus and sub-viral pathogens pose severe constraints to the production of wide range of economically important crops worldwide. The crops raised both through true seed and vegetative propagated materials are affected with number of virus and virus-like diseases. The virus may enter into plants through seed planting materials or by vectors. Once the virus is in the field, it multiplies and spreads following definite patterns depending upon the nature of the vector and agro-meteorological conditions. Disease free crops and plants are great economic and social importance in feeding the.