Relevance of the Mi23 Marker and the Potato Aphid Biology as Indicators of Tomato Plant (Solanum lycopersicum L.) Resistance to Some Pests

2010 ◽  
Vol 72 (1) ◽  
pp. 25-33 ◽  
Author(s):  
Monika Godzina ◽  
Mirosława Staniaszek ◽  
Małgorzata Kiełkiewicz
Keyword(s):  
Solanum Lycopersicum ◽  
Tomato Plant ◽  
Macrosiphum Euphorbiae ◽  
Tomato Plants ◽  
Potato Aphid ◽  
Allelic Combination ◽  
Solanum Lycopersicum L ◽  
Biological Potential ◽  
Recessive Locus ◽  
Tomato Cultivars

Relevance of the Mi23 Marker and the Potato Aphid Biology as Indicators of Tomato Plant (Solanum lycopersicumL.) Resistance to Some PestsMi-1.2gene, expressed in tomato plants, contributes to endogenous resistance against nematodes and someHemipterainsects. The aim of this study was to screen the presence of dominant/recessive locus of theMi-1.2gene in tomato cultivars with different allelic combination using Mi23 SCAR method and to assess the capacity of the local potato aphid (Macrosiphum euphorbiaeThomas) population to develop on different tomato cultivars (dominant and recessive homozygotes inMi-1.2locus). The results showed that both Mi23 marker and potato aphid performance are relevant methods in screening tomato cultivars with a different allelic combination ofMi-1.2gene. The assessment of biological potential ofM. euphorbiaeproved that, in comparison with control (tomato plants with recessive alleles ofMi-1.2gene), the aphid mortality increased 9- and 4 - fold (in the first and second experimental series, respectively) and the female longevity decreased 3 - fold when fed on tomato cvs with dominant alleles ofMi-1.2gene. Furthermore, the resistance against aphids manifests as an antibiosis mechanism in tomato plants carrying dominant alleles.

scholarly journals Drastic Differences in Silicon Concentrations between Roots and Leaves of 10 Different Solanum lycopersicum L. Varieties

HortScience ◽  
2021 ◽  
pp. 1-9
Author(s):  
Wendy L. Zellner
Keyword(s):  
Solanum Lycopersicum ◽  
Elemental Analysis ◽  
Single Species ◽  
Tomato Plants ◽  
Solanum Lycopersicum L ◽  
Tomato Cultivars ◽  
Hydroponically Grown

Silicon (Si) absorption is highly variable among different plant types; however, few studies have examined variations among different cultivars within a single species. In this study, 10 different tomato cultivars, including determinants and indeterminants as well as hybrids and heirlooms, were hydroponically grown in the presence or absence of Si to determine the absorption and distribution of the nutrients in roots, stems, petioles, and leaves. A total elemental analysis revealed that Si concentrations significantly increased with Si treatment, and that root concentrations were significantly higher than those in leaves. Although a few species showed differences in carbon, nitrogen, and calcium concentrations in roots and leaves with Si treatment, many of the macronutrients and micronutrients were unaffected. These data suggest that tomato plants absorb Si within the macronutrient range and restrict its movement from roots to shoots.

scholarly journals Effect of Uniconazole on the Control of Plant Height and Fruit Yield of Potted Tomato, Pepper, and Eggplant

2015 ◽  
Vol 25 (4) ◽  
pp. 522-527 ◽  
Author(s):  
Lucia E. Villavicencio ◽  
James A. Bethke ◽  
Lea Corkidi
Keyword(s):  
Solanum Lycopersicum ◽  
Plant Height ◽  
Tomato Plant ◽  
Untreated Control ◽  
Growth Habit ◽  
Solanum Melongena ◽  
Fruit Yield ◽  
Tomato Plants ◽  
Tomato Cultivars ◽  
Pepper Plants

Two experiments were conducted to evaluate the effect of the plant regulator uniconazole on plant height, flowering, and fruit yield of vegetable transplants. In the first experiment, seedlings of tomato (Solanum lycopersicum ‘Early Girl’), pepper (Capsicum annuum ‘Jalapeno’), and eggplant (Solanum melongena ‘Millionaire’), were sprayed with water (untreated control) or with 2.5, 5, and 10 mg·L−1 of uniconazole. Five weeks after treatment (WAT), application of 2.5 mg·L−1 of uniconazole reduced the height of tomato by 17%, and of 5 and 10 mg·L−1, by 25%. The effect of 10 mg·L−1 of uniconazole on tomato plant height persisted until 13 WAT, but did not affect fruit yield. ‘Early Girl’ tomato plants treated with 10 mg·L−1 of uniconazole were still shorter than the untreated control at this time, but there were no significant differences in the number or weight of the fruit produced by the plants treated with 10 mg·L−1 of uniconazole, and the untreated controls. In contrast, as the rate of uniconazole increased, the height of ‘Jalapeno’ pepper and ‘Millionaire’ eggplant decreased. Application of uniconazole had no effect on the number of fruit produced by ‘Millionaire’ eggplant. However, treatment with 10 mg·L−1 of uniconazole reduced the number of fruit produced by pepper plants by 50%, and reduced the total weight of fruit produced by pepper and eggplant plants by 30% and 50%, respectively, compared with the untreated control. The second experiment analyzed the effects of 5, 8, and 10 mg·L−1 of uniconazole on two cultivars of tomato with different growth habit, Early Girl (determinate) and Sun Sugar (indeterminate). Application of all rates of uniconazole decreased plant height but not the final fruit yield of the two tomato cultivars.

scholarly journals Comparative Physiological and Biochemical Changes in Tomato (Solanum lycopersicum L.) Under Salt Stress and Recovery: Role of Antioxidant Defense and Glyoxalase Systems

Antioxidants ◽  
2019 ◽  
Vol 8 (9) ◽  
pp. 350 ◽  
Author(s):  
Parvin ◽  
Hasanuzzaman ◽  
Bhuyan ◽  
Nahar ◽  
Mohsin ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
Plant Growth ◽  
Solanum Lycopersicum ◽  
Nutrient Solution ◽  
Stress Responses ◽  
Antioxidant Defense ◽  
Oxygen Species ◽  
Tomato Plants ◽  
Solanum Lycopersicum L ◽  
Post Stress

Salinity toxicity and the post-stress restorative process were examined to identify the salt tolerance mechanism in tomato, with a focus on the antioxidant defense and glyoxalase systems. Hydroponically grown 15 day-old tomato plants (Solanum lycopersicum L. cv. Pusa Ruby) were treated with 150 and 250 mM NaCl for 4 days and subsequently grown in nutrient solution for a further 2 days to observe the post-stress responses. Under saline conditions, plants showed osmotic stress responses that included low leaf relative water content and high proline content. Salinity induced oxidative stress by the over-accumulation of reactive oxygen species (H2O2 and O2•−) and methylglyoxal. Salinity also impaired the non-enzymatic and enzymatic components of the antioxidant defense system. On the other hand, excessive Na+ uptake induced ionic stress which resulted in a lower content of other minerals (K+, Ca2+, and Mg2+), and a reduction in photosynthetic pigment synthesis and plant growth. After 2 days in the normal nutrient solution, the plants showed improvements in antioxidant and glyoxalase system activities, followed by improvements in plant growth, water balance, and chlorophyll synthesis. The antioxidant and glyoxalase systems worked in concert to scavenge toxic reactive oxygen species (ROS), thereby reducing lipid peroxidation and membrane damage. Taken together, these findings indicate that tomato plants can tolerate salinity and show rapid post-stress recovery by enhancement of their antioxidant defense and glyoxalase systems.

Overexpression of LeNHX4 improved yield, fruit quality and salt tolerance in tomato plants (Solanum lycopersicum L.)

2020 ◽  
Vol 47 (6) ◽  
pp. 4145-4153 ◽  
Author(s):  
Mostapha Maach ◽  
Mourad Baghour ◽  
Mustapha Akodad ◽  
Francisco Javier Gálvez ◽  
María Elena Sánchez ◽  
...  
Keyword(s):  
Salt Tolerance ◽  
Solanum Lycopersicum ◽  
Fruit Quality ◽  
Tomato Plants ◽  
Solanum Lycopersicum L

Nitrogen and photorespiration pathways, salt stress genotypic tolerance effects in tomato plants (Solanum lycopersicum L.)

2019 ◽  
Vol 42 (1) ◽  
Author(s):  
Alejandro de la Torre-González ◽  
Eloy Navarro-León ◽  
Begoña Blasco ◽  
Juan M. Ruiz
Keyword(s):  
Salt Stress ◽  
Solanum Lycopersicum ◽  
Tomato Plants ◽  
Solanum Lycopersicum L

PRODUCTIVITY AND QUALITY OF AQUAPONICALLY GROWN TOMATO (Solanum lycopersicum L.) SUPPLEMENTED WITH DIFFERENT NUTRIENT SOLUTIONS

2017 ◽  
Vol 11 (1) ◽  
pp. 64-98
Author(s):  
WILSON LLEGUNAS, JR ◽  
◽  
ROSARIO SALAS ◽  
Keyword(s):  
Solanum Lycopersicum ◽  
Tomato Plant ◽  
Block Design ◽  
Sugar Content ◽  
Pomacea Canaliculata ◽  
Tomato Fruits ◽  
Node Number ◽  
Net Return ◽  
Solanum Lycopersicum L ◽  
Nutrient Solutions

Tomato (Solanum lycopersicum L.) is an important vegetable in the country which is consumed both raw and as processed product. This study aimed to evaluate the growth, yield, postharvest qualities and profitability of aquaponically grown tomato supplemented with different nutrient solutions. The study was laid out in Randomized Complete Block Design with 8 treatments replicated 3 times. Tomato fruits were first harvested 60 days after transplanting with 100 percent survival rate. Early flowering of tomato plant was observed when applied with VSU liquid nutrient formulation (VSU-LNF) with node number ranging from 13.33-14.00 bearing the first flower. Growth parameters such as plant height, number of lateral shoot, root length and fruit size are stimulated by the application of VSU liquid nutrient formulation and in combination with ferments. This also resulted to high number and weight of marketable fruit in tomato plant. Carotenoid and chlorophyll contents of the fruits were higher in aquaponically grown tomato supplemented with fermented kuhol (Pomacea canaliculata L.). Free radical scavenging activity was found highest in the fruit of tomato grown in aquaponic system supplemented with combined VSU liquid nutrient formulation with fermented malunggay (Moringa olifera). However, vitamin Cand sugar content of tomato fruits were found highest when supplemented with combine VSU liquid nutrient formulation and fermented kuhol. No significant differences were obtained on firmness, percent weight loss, respiration rate at 2 and 4 weeks after storage, titratable acidity, fruit nitrogen, pH of fruit, oxidation reduction potential, electrical conductivity and total dissolved solids. On the other hand, higher moisture content of the tomato fruits were observed with the application of VSU liquid nutrient formulation and in combination with ferments. Therefore, high yield was produced with the application of VSU liquid nutrient formulation which resulted to higher net return. Aquaponically grown tomato supplemented with VSU-LNF produced lesser yield but with considerable net return.

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