Co-Authors:
Gottlieb, Y., Dept. of Nematology, ARO, Volcani Center, Bet Dagan, Israel
Cohn, E., Dept. of Nematology, ARO, Volcani Center, Bet Dagan, Israel
SPiegel-Roy, P., Dept. of Fruit Tree Breeding, ARO, Volcani Center, Bet Dagan, Israel
Gottlieb, Y., Dept. of Nematology, ARO Volcani Center, Bet Dagan, Israel
Cohn, E., Dept. of Nematology, ARO Volcani Center, Bet Dagan, Israel
SPiegel-Roy, P., Dept. of Fruit Tree Breeding, ARO Volcani Center, Bet Dagan, Israel
Abstract:
Two biotypes of the citrus nematode, Tylenchulus semipenetrans Cobb, were identified among five populations occurring in different regions in Israel. These biotypes originated from Sour orange and Troyer citrange roots and differed in their ability to infest Poncirus trifoliata hybrids (particularly Troyer citrange). They appear to be close to two recognized biotypes known to be present in other countries and designated as the “Poncirus” and “Mediterranean” biotypes. The different infectivity of the two biotypes on Troyer citrange roots was maintained even after they were cultured for 6 months on Sour orange. Both biotypes readily reproduced on persimmon, but failed to infest olive and grapevine. Two new P. trifoliata x Poorman orange hybrids exhibited good resistance to both biotypes. © 1986, Springer Science + Business Media B.V.. All rights reserved.
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