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STUDIES ON TWO APHID‐TRANSMITTED VIRUSES OF LEGUMINOUS CROPS
Author(s) -
CHAUDHURI R. P.
Publication year - 1950
Publication title -
annals of applied biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.677
H-Index - 80
eISSN - 1744-7348
pISSN - 0003-4746
DOI - 10.1111/j.1744-7348.1950.tb00960.x
Subject(s) - myzus persicae , biology , aphid , aphis , mosaic virus , virus , vector (molecular biology) , homoptera , transmission (telecommunications) , horticulture , macrosiphum euphorbiae , botany , virology , plant virus , aphididae , pest analysis , biochemistry , engineering , gene , electrical engineering , recombinant dna
Pea mosaic virus was transmitted by Myzus persicae Sulz., Macrosiphum pisi Kalt., M. solanifolii Ash. and Aphis fabae Scop., but not by Hyperomyzus staphyleae Koch. It is a ‘non‐persistent’ virus (Watson & Roberts, 1939), and is most readily transmitted when vectors are fasted and then given a short infection feeding. Vector efficiency was not increased by increases in preliminary fasting beyond 15 min. or with increasing infection feeding beyond 1 hr. Most aphids became non‐infective within 15 min. when feeding, but fasting aphids remained infective for 3 hr. Species that fed readily on the infected plants were less efficient vectors than those which did not. Seed set by infected plants produced healthy seedlings. Pea enation mosaic virus persisted in Myzus persicae and Macrosiphum pisi for more than 140 hr.; its transmission was unaffected by preliminary treatments of aphids. No transmission was obtained until at least 4 hr. after aphids had left infected plants; usually the ‘latent’ period exceeded 1 day and its duration was apparently unaffected by the length of the infection feeding.