Growth and yield of grafted cucumbers in soil infested with root-knot nematodes

Abstract

The aim of this study was to determine the effect of rootstocks on the growth and yield of cucumber (Cucumis sativus L.) plants in soils infested with root-knot nematodes (Meloidogyne spp.) Cucumber 'Adrian' was grown with its own roots or was grafted onto three rootstocks of Lagenaria siceraria (Molina) Standl. ('Emphasis', 'S-1', and 'Gourd'), two interspecific hybrid rootstocks of Cucurbita maxima Duchesne × C. moschata Duchesne ('Strong Tosa' and 'RS 841 Improved') and zucchini Cucurbita pepo L. ('Romanesco Zucchini'). The experiments were conducted in commercial greenhouse, with cucumber grafted onto three rootstocks in the first season and onto six rootstocks in the second spring-summer season. The number of leaves was considerably affected by the rootstock in both seasons, and was the highest for the plants grafted onto interspecific rootstocks (28.0 in the first and 44.9 in the second season). The plants grafted onto 'Strong Tosa' had higher total number of fruits (19.9) and yield (5.38 kg) compared to other rootstocks or non-grafted plants in first season, and the same result was found for two interspecific rootstocks in the second season (6.96 kg and more than 28.9 fruits per plant). The total soluble solids, pH and electrical conductivity of the fruit were not affected by rootstock, while titratable acidity changed with the rootstock type. The grafting of cucumber plants onto different rootstocks was confirmed as an acceptable non-chemical method to compete with the limitations of soils infected with root-knot nematodes, but the effect was highly dependent on the choice of the rootstock.

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

“…radicis-cucumerinum, Rhizoctonia solani and Verticillium dahliae (Davis et al 2008 ;Pavlou et al 2002 ;USDA 2015 ). Regarding RKN, the level of resistance reported is not consistent, being either susceptible or resistant (Davis et al 2008 ;Cansev and Ozgur 2010 ;Kokalis-Burelle and Rosskopf 2011 ;Goreta Ban et al 2014 ;USDA 2015 ) but no information about its tolerance when cucumber is grafted as a scion is available. In order to know the host status of the rootstock under particular agro-environmental conditions, the relationship between nematode density at planting (Pi) and at the end of the crop (Pf) has to be determined to estimate the maximum multiplication rate (in absence of limiting factors) (a), the maximum population density (the maximum Pf achieved by a nematode population on a plant host under particular conditions) (M), and the equilibrium density (when the plant can supply enough food to maintain the population density at planting; Pf = Pi; Pf/Pi = 1) (E) (Seinhorst 1967 ).…”

Crecimiento y calidad de plántulas de café (Coffea arabica) injertadas sobre Coffea canephora frente a nematodos en vivero

“…5,[8][9][10] Además de las características mencionadas, C. canephora (como porta-injerto) puede ejercer influencia, sobre el injerto, en aspectos fisiológicos (intercambio de gases, transpiración y asimilación neta de carbono) y de crecimiento. 11,12 Por otra parte, la comunicación entre el porta-injerto y la yema (injerto), se ve afectado por factores externos como la presencia de nematodos, los que pueden favorecer o perjudicar el crecimiento del injerto en función de su cantidad [13][14][15][16] y de los injertos usados. 17 A pesar de la información existente sobre el comportamiento de los injertos usando como portainjerto C. canephora en presencia y ausencia de nematodos 17 , en el Perú existen pocos estudios referidos a este tema, así por ejemplo, Julca et al 18 re portaron una mejor respuesta, ante la presencia de nematodos, en plantas injertadas de Icatú vermelho y Caturra vermelho, sobre café Robusta.…”

Bemisia tabaci MED Population Density as Affected by Rootstock-Modified Leaf Anatomy and Amino Acid Profiles in Hydroponically Grown Tomato

“…Thus, vegetable grafting has received more attention in recent years as a sustainable practice for mitigation of abiotic and biotic stresses (Colla et al, 2010 ; Louws et al, 2010 ; Savvas et al, 2010 ; Schwarz et al, 2010 ). Grafting is a common practice in watermelon and cucumber production in Croatia (Goreta et al, 2008 ; Goreta Ban et al, 2014 ), but tomato grafting has been introduced to greenhouse production recently.…”