Abstract

CALLO, R. A Vega; ZEGARRA, J. J Tamo  and  BELLE, C. Reaction of grapevine rootstocks and cultivars to Meloidogyne incognita, M. arenaria and M. hapla. Agriscientia [online]. 2021, vol.38, n.1, pp.121-130. ISSN 1668-298X.  http://dx.doi.org/10.31047/1668.298x.v38.n1.29368.

Thls study almed to evaluate the reaction of s¡x grapevine rootstocks (MGT 101-14, Rltcher 110, Paulsen 1103, K 5BB, SO4, Salt creek) and two cultivars (Quebranta and Torontel) to three specles of the root-knot nematode (Meloidogyne Incógnita, M. arenarla and M.hapla). The experlment was performed as a completely randomlzed deslgn wlth an 8 x 3 factorial scheme and six replicates per treatment. The experimental unit in each replicate comprised a grapevine cutting planted in 3 kg bags with sterilized soil. Cuttings were inoculated with 5000 eggs + juveniles (J2) of M. Incógnita, M. arenarla and M. hapla. Six months after inoculation, plants were removed from the bags, and the reaction was determined by evaluating the number of galls (NG), number of nematodes per gram of root (NNGR), and reproduction factor (RF). The evaluated rootstocks, MGT 101-14, Ritcher 110, Paulsen 1103, K 5BB, SO4 and Salt Creek, were resistant to M. Incógnita, M. arenarla and M. hapla, except for Salt creek, which was susceptible to the latter. The Quebranta and Torontel cultivars were susceptible to the Meloidogyne species under study.

Keywords : root-knot nematode; resistance; susceptibility; Vitis spp.

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