Crop rotations with Mi gene resistant and susceptible tomato cultivars for management of root-knot nematodes in plastic houses

Talavera, M.; Verdejo-Lucas, Soledad; Ornat, C.; Torres, J.L. Lozano; Vela, María Dolores; Macías, F. J.; Cortada, Laura; Arias, D.J.; Valero, Jordi; Sorribas, Francisco Javier

doi:10.1016/j.cropro.2009.03.015

Cited by 55 publications

(59 citation statements)

References 12 publications

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“…Amalthee (0.82 and 402 J2/100 cm 3 soil, respectively) probably reflect different experimental conditions, cultivar susceptibility or duration of the experiments (70--75 and 134 days in the pots and field, respectively), which suggests that yield losses would occur in zucchini if conditions for nematode development were suitable. The damage threshold in annual crops has been related to the planting date and the duration of the crop cycle (Ehwaeti et al, 1999;Talavera et al, 2009;Vela et al, 2014). The rotational crop preceding zucchini will also affect RKN reproduction and yield losses.…”

Section: Discussionmentioning

confidence: 99%

Population dynamics of Meloidogyne javanica and its relationship with the leaf chlorophyll content in zucchini

et al. 2015

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Root-knot nematodes (RKN), Meloidogyne spp., are major limiting factors for vegetable production worldwide (Sikora and Fernandez, 2005). Management of nematode problems in RKN conductive systems, such as protected cultivation in plastic greenhouses, is a major challenge since crop intensity and environmental conditions under the plastic cover favor pest and disease development. Crops with long and short cycles are cultivated generally in rotation with solanaceous (tomato, pepper and eggplants) and cucurbitaceous (cucumber, melon, watermelon, and zucchini) crops with short fallowing periods (4--8 weeks) between successive crops (Sorribas and Verdejo-Lucas, 1994;Talavera et al., 2012).The European Directive 2009/128/EC on the sustainable use of plant protection products promotes integrated production as a means for reducing pesticide use. To achieve this goal, it is necessary to understand the host--parasite relationship in the rotational crops of the production system for estimating nematode damage thresholds, predicting yield losses and modelling modeling the population dynamics. The damage potential of the nematode to the crop has been described by mathematical models (Seinhorst, 1965). Estimation of the potential growth of the RKN population will provide information on the suitability of the crop and tolerance to the nematode. A negative relationship between the initial population density (Pi) and the reproduction rate (Pf/Pi), Pf being the nematode population density at harvest, has been described in several susceptible annual crops (Ferris et al., 1986). Damage caused by RKN is determined by relating Pi to growth and yield. The minimal density that causes a measurable reduction in plant growth or yield varies with nematode species, host plants, cultivar and environment (Barker and Olthof, 1976). It is generally accepted that cucurbitaceous crops are susceptible to RKN but differences in susceptibility levels have been observed (López-Gómez and Verdejo-Lucas, 2014). Yield losses have been reported in cucumber and melon (Ornat et al., 1997;Ploeg and Phillips, 2001;Kim and Ferris, 2002;Giné et al., 2014).However, few studies have focused on the development of damage-functions models for zucchini, Cucurbita pepo L. (Ferris et al., 1986;Vela et al., 2014).As obligate sedentary endoparasites, RKN interfere with plant physiological processes involved in water uptake and nutrient translocation and create an imbalance of macro and micro-nutrients; in consequence, leaf chlorosis and stunted Population dynamics of AbstractThe relationship between the initial (Pi) and final (Pf) population densities of Meloidogyne javanica in response to increasing initial inoculum levels and the effect on yield in zucchini cv. Amalthee (Cucurbita pepo L.) was determined using a geometric series of 12 Pi from 0 to 51,200 eggs/100 cm 3 of soil in pot experiments in a greenhouse. The maximum multiplication rate was 425, and the equilibrium density was 701,951 eggs/100 cm 3 soil. The relative yield, represented as dry top weight, fit t...

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Section: Discussionmentioning

confidence: 99%

Population dynamics of Meloidogyne javanica and its relationship with the leaf chlorophyll content in zucchini

et al. 2015

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“…In tomato protected crops, Talavera et al (2009) proposed crop rotation with Mi gene resistant and susceptible cultivars as a strategy for the management of root-knot nematodes.…”

Section: Development Of Virulence Tomentioning

confidence: 99%

Development of virulence to Meloidogyne incognita on resistant pepper rootstocks

Ibañez

Robertson

Martinez-Lluch

et al. 2014

Span. j. agric. res.

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The root-knot nematode (RKN) Meloidogyne incognita is a major soil parasite of pepper crops in greenhouses in Southeast Spain. Due to the limitations of the use of soil fumigants, grafting plants on resistant rootstocks (R-rootstocks) has become an important alternative to chemical nematicides. The repeated use of R-rootstocks can bring about the selection of virulent populations capable of overcoming resistance. We carried out a six-year investigation on resistant rootstocks in a naturally M. incognita infested greenhouse, and found that two successive years of growing plants grafted on R-rootstocks Atlante (ATL) were sufficient to overcome resistance (galling index 1.5 and 5.6 in the first and second years respectively). A large variability was observed between several R-rootstocks. Two R-rootstocks (C19 and Snooker) behaved like ATL while two others (Terrano and DRO 8801) were not infected by RKN. Laboratory studies with the same R-rootstocks, inoculated with two nematode isolates (avirulent and virulent against ATL) confirmed the greenhouse results, indicating that some rootstocks may be infested by virulent populations and others may not. It suggests that different R-genes, which are differentially overcome by RKN, have been introgressed into the rootstocks. This may have consequences for the management of resistant rootstocks in the field.

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“…Another useful indicator of the population growth rate is the relationship between the multiplication rate (Pf/Pi) and Pi. It allows comparing nematode population dynamics on different plant species or germplasms or between cropping seasons for a given pathosystem and the efficacy of control methods (Talavera et al 2009 ;Vela et al 2014 ). Those parameters refer to nematode population growth but do not provide valuable information on marketable crop yield, which is provided by the relationship between Pi and relative crop yield by the Seinhorst damage function model, the tolerance limit and the minimum relative yield (Seinhorst 1965 ).…”

Section: Introductionmentioning

confidence: 99%

Population dynamics of Meloidogyne incognita on cucumber grafted onto the Cucurbita hybrid RS841 or ungrafted and yield losses under protected cultivation

et al. 2017

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The influence of the squash hybrid RS841 rootstock (Cucurbita maxima x C. moschata) on population dynamics of Meloidogyne incognita and yield of cucumber cv. Dasher II was assessed during 2013 and 2014 in a plastic greenhouse. In addition, the relationship between ecophysiological parameters (plant water status, gas exchange, and leaf reflectance) and Pi and cucumber yield were also estimated in 2013. Nematode densities were determined at the beginning (Pi) and at the end (Pf) of each crop, and the relationship between these parameters was used to estimate the maximum multiplication rate (a), the maximum population density (M) and the equilibrium density (E) per grafted and ungrafted cucumber and cropping season. Moreover, the relationship between the multiplication rate (Pf/Pi) and Pi was compared between grafted and ungrafted cucumber per cropping season. Finally, the relative yield of grafted or ungrafted cucumber was plotted against Pi to determine the tolerance limit (T) and the minimum relative yield (m) by the Seinhorst damage function model. Values of a, M and E in grafted cucumber were higher than in ungrafted one irrespective of the cropping season. These results were supported by comparing the relationship between Pf/Pi and Pi between grafted and ungrafted cucumber. The relationship between Pi and yield fitted the Seinhorst damage function. The values of T and m did not differ between grafted and ungrafted each year. Predawn water potential, net photosynthetic rate, and leaf chlorophyll index decreased with increasing Pi. In addition, relative yield was related to variation in net photosynthetic rate and the leaf chlorophyll index. Under the conditions of this study, RS841 rootstock was neither resistant nor tolerant to M. incognita.

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Crop rotations with Mi gene resistant and susceptible tomato cultivars for management of root-knot nematodes in plastic houses

Cited by 55 publications

References 12 publications

Population dynamics of Meloidogyne javanica and its relationship with the leaf chlorophyll content in zucchini

Population dynamics of Meloidogyne javanica and its relationship with the leaf chlorophyll content in zucchini

Development of virulence to Meloidogyne incognita on resistant pepper rootstocks

Population dynamics of Meloidogyne incognita on cucumber grafted onto the Cucurbita hybrid RS841 or ungrafted and yield losses under protected cultivation

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