TEMPERATURE AND THE LIFE CYCLE OF HETERODERA SCHACHTII (NEMATODA: HETERODERIDAE)

Authors : Mehmet KARAKAŞ

Pages : 13-20

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Publication Date : 2011-06-01

Article Type : Research Paper

Abstract :Development of the sugar beet cyst nematode, Heterodera schachtii, was studied in growth chambers at 20, 25, 29, 32 and 35 ± 1 ºC on Beta vulgaris cv. Saccharifera. The optimum temperature for reproduction appeared to be 32 ºC, at which the life cycle, from second-stage juvenile insert ignore into journalissuearticles values(J2); to J2, was completed in 16-19 days; at 35 ºC, 20-21 days were required. Juveniles emerged from eggs within 29 days at 29 ºC and after 43 days at 25 ºC. Although J2 were present within eggs after 62 days at 20 ºC, emergence was not observed up to 101 days after inoculation. Female nematodes produced fewer eggs at 20 ºC than at higher temperatures
Keywords : Sugar beet cyst nematode, Heterodera schachtii, life cycle, temperature