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Vector Relations

Transmission of Two Kinds of Rice Tungro-Associated Viruses by Insect Vectors. Hiroyuki Hibino, Plant pathologist, Indonesia-Japan Joint Food Crop Research Program, Central Research Institute for Agriculture (CRIA), Jalan Merdeka 99, Bogor, Indonesia (on leave from Institute for Plant Virus Research, Yatabe, Tsukuba, Ibaraki, Japan); Nasir Saleh(2), and M. Roechan(3). (2)(3)Assistant plant pathologists, Pests and Diseases Division, CRIA, Bogor. Phytopathology 69:1266-1268. Accepted for publication 18 May 1979. Copyright 1979 The American Phytopathological Society. DOI: 10.1094/Phyto-69-1266.

Two kinds of tungro-associated viruses, bacilliform (B) and isometric (I), were transmitted together or separately by Nephotettix virescens from rice plants infected with both B and I particles. Both particles were acquired in a 30-min acquisition access period, transmitted in a 10-min inoculation access period, and retained by the insects for 3 days. I particles were transmitted from plants infected with I particles alone, but B particles were not transmitted from plants infected with B particles alone. N. nigropictus transmitted I particles from rice plants infected with I particles alone and, occasionally, I particles but not B particles from doubly infected plants.

Additional keywords: rice waika virus.