Surveys of virus diseases in pea, lentil, dwarf and broad bean crops in south island, new zealand

Abstract

Pea, lentil, dwarf and broad bean crops were each monitored over two seasons for virus infection using sample surveys, ELISA, and indicator hosts to estimate disease incidence. The incidence of individual viruses in most crops was usually <11%, exceptions include cucumber mosaic vims (CMV) in lentils and alfalfa mosaic vims (AMV) in broad beans. Multiple vims infections were detected in 55-100% of pea, lentil, and broad bean crops. Soybean dwarf vims (SDV), beet western yellows vims (BWYV), pea seed-borne mosaic (PSbMV), and CMV were the most common aphid-borne or seed-transmitted viruses detected. AMV, CMV, BWYV, bean yellow mosaic vims (BYMV), and PSbMV were recorded from lentil and CMV and PSbMV from broad beans for the first time in New Zealand. Survey results are presented and their implications are discussed. © 1993 The Royal Society of New Zealand.