Response of brinjal (Solanum melongena L.) varieties for resistance against root-knot nematode, Meloidogyne incognita race-1

Abstract

Thirty brinjal varieties were screened for their resistance / susceptibility to root-knot nematode (Meloidogyne incognita race-1) infestation. Out of 30 brinjal varieties, eighteen varieties viz., Black Beauty, Brinjal 1 hybrid, Brinjal No.38, Chamak, Govinda, Green round, Nagina, Nav Kiran, Neel Kamal, Nishant, P.K-123, Prabha Kiran, Prasad, Sukhda, Surya Kiran, i9Utkal, VNR-51 and VNR-60 were highly susceptible, seven varieties (Brinjal Advance, Brinjal BSS1013, Green long, Harshit, Prapti, Shamli and Ujjwal) were susceptible, two varieties (Mahy 112 and Mahy Ruby) were tolerant, two varieties (Hybrid green and JK Kajal) were moderately resistant and only one variety Mahy 80 was resistant against Meloidogyne incognita race-1. To the best of our knowledge, Mahy 80 variety was ported to be resistant against root-knot nematode, M. incognita race-1 for the first time

Biorational management of root-knot of brinjal (Solanum melongena L.) caused by Meloidogyne javanica

“…Of the twenty cultivars, only ‘Noagram’ was found to be ‘moderately resistant’, and the responses of the rest of the cultivars were ‘susceptible’ to ‘highly susceptible’. These findings are supported by two similar screening experiments conducted in Bangladesh and India, where very few brinjal cultivars were found to have significant resistance to RKN ( Begum et al., 2014 ; Akhter and Khan, 2018 ). In most screening trials, RKN is considered a generalized pest, although the combination of crop and pest species plays an important role in the outcome of resistance or susceptibility.…”

“…javanica . Data on growth parameters of plants and reproductive parameters of nematodes were recorded 45 days after inoculation (DAI) and 90 DAI ( Akhter and Khan, 2018 ). Eggs were extracted from egg masses following the sugar floatation method with 40% sucrose solution ( Hussey and Barker, 1973 ), and J 2 from soil was extracted by a modified centrifugal-flotation technique ( Jenkins, 1964 ).…”

Screening Resistance of Several Accessions Eggplant (Solanum melongena L.) Against Root-Knot Nematodes (Meloidogyne incognita)

“…Control plant (TE Silila) had the number of galls/roots was 36.33 this indicates that the number of galls/roots in each plant was significantly different (Table 2). The results of the calculation of the gall index showed that the resistance of the 30 accessions tested showed The mean followed by the same letter shows no significant difference (DMRT α=0.05) The mean followed by the same letter shows no significant difference (DMRT α=0.05) *Based on gall index 0 (Resistant), 1 (1-2 Resistant), 2 (Moderate Resistant), 3 (Moderate Sustainable), 4 (Sustainable), 5 (Highly Sustainable) Hussain (1986) [1].…”

“…To categorize the tested accessions eggplant as susceptible or resistance to M.incognita we used two scales; the first was root gall index ranges which determinted according to Hussain (1986) [1] as follow : Index gall 0 = highly resistant (HR), 1 = 110 galls = resistant (R), 2 = 11-20 galls = Moderate resistant (MR), 3 = 21-30 galls = Moderate susceptible (MS), 4 = 31-100 galls = susceptible (S), 5 = >100 galls = highly susceptible (HS). The second scale was depending on the rate of build-up (Pf/Pi) according to Taylor & Sasser (1978) [12] : ≥ 3 = highly susceptible (HS), 2-3 = susceptible (S), 1-2 = moderate susceptible (MS), 0.5-1.0 = moderate resistant (MR), 0.3-0.5 = resistant (R), dan ≤0.3 = highly resistant (HR).…”

“…Evaluation of germplasm resistance were done at 30 days after inoculation by uprooted the plant and separating the planting medium and roots. The roots were cleaned using running water, then the root length of each plant was measured and the number of galls formed on the roots was calculated and then determined by the gall index according to Hussain (1986) [1]. These observation parameters are used to support qualitative data.…”