INHERITANCE OF SOME FRUIT CHARACTERS AND RESISTANCE TO ROOT-KNOT NEMATODE, MELOIDOGYNE INCOGNITA, IN TOMATO (SOLANUM LYCOPERSICUM , L.)

2017 ◽  
Vol 2 (3) ◽  
pp. 257-274
Author(s):  
Mona R. Khalil ◽  
M. Z. El- Shennawy
Keyword(s):  
Solanum Lycopersicum ◽  
Meloidogyne Incognita ◽  
Root Knot Nematode ◽  
Solanum Lycopersicum L ◽  
Fruit Characters

scholarly journals Effect of Individual, Simultaneous and Sequential Inoculation of Pseudomonas fluorescens and Meloidogyne incognita on Growth, Biochemical, Enzymatic and Nonenzymatic Antioxidants of Tomato (Solanum lycopersicum L.)

Plants ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 1145
Author(s):  
Ahmed Noureldeen ◽  
Mohd Asif ◽  
Taruba Ansari ◽  
Faryad Khan ◽  
Mohammad Shariq ◽  
...  
Keyword(s):  
Antioxidant Enzymes ◽  
Pseudomonas Fluorescens ◽  
Solanum Lycopersicum ◽  
Meloidogyne Incognita ◽  
Interactive Effects ◽  
Nematode Reproduction ◽  
Solanum Lycopersicum L ◽  
Defensive Enzymes ◽  
Sequential Inoculation ◽  
Nonenzymatic Antioxidants

This study was conducted on tomato (Solanum lycopersicum cv. K-21) to investigate the bioprotective nature of Pseudomonas fluorescens and its interactive effects with Meloidogyne incognita in terms of growth biomarkers, changes in biochemical attributes and modulation in antioxidant enzymes of the tomato plant. In this study, we grew tomato plants with M. incognita and P. fluorescens in separate pots, simultaneously and sequentially (15 days prior or post) after 15 days of seed sowing. The sequential inoculation of Mi15→Pf maximally increased the root-knot index and decreased the nematode population. It was also noted that inoculation suppressed the plant growth biomarkers in comparison to control. However, maximum suppression in nematode reproduction and increment in growth and physiological attributes were observed when P. fluorescens was applied 15 days prior to the nematode (Pf15→Mi) as compared to control. All the treatments showed an increase in antioxidant enzymes. Expression of phenol content and defensive enzymes such as peroxidase (POX) and superoxide dismutase (SOD) increased, in contrast to a significant reduction in malondialdehyde (MDA) and hydrogen peroxide (H2O2) contents when compared with the untreated inoculated plants. However, the highest levels of POX and SOD, and a lowest of phenol, MDA and H2O2 were displayed in the treatment Pf15→Mi, followed by Mi+Pf and Mi15→Pf.

scholarly journals Especies nativas de Trichoderma spp. y su actividad antagónica contra Meloidogyne incognita en Solanum lycopersicum L.

2018 ◽  
pp. 5-12
Author(s):  
Jiram Ivan Cetz Chi ◽  
Jairo Cristóbal Alejo ◽  
José María Tún Suárez ◽  
Fernando Antonio Peraza Luna ◽  
Juan Candelero De la Cruz
Keyword(s):  
Solanum Lycopersicum ◽  
Meloidogyne Incognita ◽  
Trichoderma Spp ◽  
Solanum Lycopersicum L

En condiciones protegidas, se evaluó el potencial antagónico de cinco especies nativas de Trichoderma; T. harzianum (Th02-04), T. harzianum (Th10-D86), T. simmonsi (Th33-58), T. virens (Th33-59) y T. virens  (Th26-52), especies comerciales y un testigo sin inoculantes fúngicos, distribuidas en un diseño completamente al azar y cuatro repeticiones en plántulas de tomate (Solanum lycopersicum L.), inoculadas con tres aplicaciones de 1 x106 conidias ml-1. Se inocularon 18, 500 huevos de M. incognita y 10 ml con la concentración inicial de las conidias fúngicas, con aplicaciones al momento, a los ocho y 15 días después del trasplante. El producto comercial y las especies T. virens (Th26-52 y Th3359) lograron disminuir hasta 22% la formación de agallas, 87 y 52.39% de inhibición de producción de formación de hembras por gramo de raíz. El control de estas especies contra el nematodo favoreció el mejor crecimiento vegetativo de las plantas.

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