Detection and transmission of peanut stripe virus on peanut cultivars
1990
Aquino, A.P.
Results of the study are summarized as follows: (1) In the study of virus detection using ELISA technique, it revealed that cotyledon and embryo consistently exhibited the presence of peanut stripe virus. Leaf tissue samples showed lesser amounts of virus particles; (2) The virus was highly seed-transmitted; (3) In the studies conducted using the sap and pin pricking transmission, it was found out that mechanical methods of transmission effectively transmitted the peanut stripe virus and in all biological inoculation studies, it showed that Aphis craccivora could effectively transmit the virus; (4) One aphid can transmit the virus. Infection increased as the number of aphid was increased. Increasing the number of aphids did not significantly increase infection. Only Aphis craccivora and A. glycines were efficient transmitters; 5) As infestation intensity increased correspondingly, growth and yield reduced; (6) Different varieties reacted with varying degrees to peanut stripe virus infection. Some exhibited resistance, and some came out very susceptible; (7) At an early stage of growth, the plants manifested susceptibility. However, as plants grew older, it developed resistance to virus infection; and (8) Only Chenopodium amaranticolor and Vigna unguiculata could serve as indicator/alternate host. Other weeds used were inefficient alternate/indicator hosts of the virus.
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