25 Bitki Koruma Bülteni / Plant Protection Bulletin, 2020, 60 (1) : 25-30 Original article Reaction of some carrot varieties against root-knot nematode species (Meloidogyne spp. Goeldi, 1982) Bazı havuç çeşitlerinin kök-ur nematodu türlerine (Meloidogyne spp. Goeldi, 1982) karşı reaksiyonu GIRIŞ Emre EVLİCE a , Dolunay ERDOĞUŞ a* ,Gökhan YATKIN a a Directorate of Plant Protection Central Research Institute, Gayret Mah. Fatih Sultan Mehmet Bulv. 06172 Yenimahalle, Ankara, Turkey Article history: DOI: 10.16955/bitkorb.599172 Received : 31.07.2019 Accepted : 01.11.2019 Root-knot nematodes (Meloidogyne spp.) cause serious damage by forming galls on the roots of the many vegetables host plants including carrots. In this study, the reactions of three diferent carrot varieties that are commercially used in the Central Anatolia region were evaluated against four diferent types of root-knot nematodes in a growth chamber pot trial in 2018. Based on the observation of root galling and the egg-mass numbers, Romance, Chantenay and Nantes carrot varieties were considered susceptible to Meloidogyne chitwoodi, M. javanica, M. incognita and M. hapla. Tere were diferences in egg-mass and gall numbers among all carrot varieties for both M. chitwoodi and M. incognita (P>0.05). M. javanica reproduced the highest number of 234.4 egg masses and gall numbers on Nantes variety respectively. On the other hand, M. hapla reproduced 193.6 egg masses and galling on Nantes variety. From the carrot variety point of view, no diferences detected between the nematode types on Chantenay. However on Nantes variety M. javanica (234.4), M. hapla (193.6) and on Romance M. javanica (207.8), M. hapla (176.4) and M. chitwoodi (141.6) were categorized in the same group. As a result of the study, it was concluded that Romance, Chantenay and Nantes carrot varieties are sensitive to root-knot nematodes. Because of this, these varieties should be used carefully in contaminated areas. Anayurdu Orta Asya ve Yakın Doğu olan havuç (Daucus carota L.) bitkisi Apiaceae familyasına bağlı olup, tohumla üretimi yapılan iki yıllık bir sebze türüdür. Üretimi dünya üzerinde geniş alanlara yayılmıştır ve çiğ ya da pişmiş olarak tüketilmektedir (Widmer et al. 1999). Türkiye dünyada havuç üretiminde 9. sıradadır. Ülkemizde 123.478 da alanda 642.837 ton havuç üretimi gerçekleştirilmiş olup bu üretim sebze üretimimizin %2.1’lik kısmını oluşturmaktadır (FAO 2017, TÜİK 2018). Üretilen havuç daha çok iç pazarda taze olarak tüketilmekte ya da yemeklerde değerlendirilmektedir. ARTICLE INFO ABSTRACT Keywords: root-knot nematodes, Meloidogyne, carrot, reaction of variety * Corresponding author: Dolunay ERDOĞUŞ dolerkoll@gmail.com Bitki Koruma Bülteni / Plant Protection Bulletin http://dergipark.gov.tr/bitkorb