Spread of Tomato Brown Rugose Fruit Virus in Sicily and Evaluation of the Spatiotemporal Dispersion in Experimental Conditions

Tomato brown rugose fruit virus (ToBRFV) is an emerging pathogen that causes severe disease in tomato (Solanum lycopersicum L.) crops. The first ToBRFV outbreak in Italy occurred in 2018 in several Sicilian provinces, representing a serious threat for tomato production. In the present work, the spatiotemporal displacement of ToBRFV in Sicily was evaluated, analyzing a total of 590 lots of tomato seed, 982 lots of plantlets from nurseries and 100 commercial greenhouses. Furthermore, we investigated the ToBRFV spreading dynamic in a greenhouse under experimental conditions. Results showed several aspects related to ToBRFV dispersion in protected tomato crops. In detail, an important decrease of the ToBRFV-infected seed and plantlet lots was detected. Regarding the examined commercial greenhouses, ToBRFV still appears to be present in Sicily, although there has been a decrease during monitoring. In experimental conditions, it was demonstrated that the presence of few infected plants are sufficient to damage the entire crop in a short time, reaching almost 100% of infection.

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Distribution and incidence of tomato bacterial wilt caused by Ralstonia solanacearum in the central region of Togo

Plant Health Progress ◽

10.1094/php-09-21-0117-s ◽

2021 ◽

Author(s):

Bitang Bamazi ◽

Agnassim Banito ◽

K. D. Ayisah ◽

Rachidatou Sikirou ◽

Mathews Paret ◽

...

Keyword(s):

Solanum Lycopersicum ◽

Laboratory Investigation ◽

Central Region ◽

Bacterial Wilt ◽

Ralstonia Solanacearum ◽

Yield Losses ◽

Tomato Production ◽

Solanum Lycopersicum L ◽

Survey Results ◽

Tomato Bacterial Wilt

Tomato (Solanum lycopersicum L.) is one of the most important vegetables in Togo. Unfortunately, tomatoes are susceptible to many diseases, among which bacterial wilt caused by Ralstonia solanacearum causes major yield losses. In this study, incidence of bacterial wilt and its distribution was evaluated in the central region of Togo, the major tomato producing area in the country. Overall, 16 localities were surveyed in four prefectures. In each locality, three fields were visited, and the incidence of the disease was recorded, and diseased samples were collected for laboratory investigation. The results showed that bacterial wilt occurred in all the fields visited, indicating a field incidence of 100%, whereas the plant incidence ranged from 10.00±00% to 43.33±3.33%, with an average of 20.94±1.77%. The antibody based Immunostrip test was positive for R. solanacearum in 100% of the visited fields. From 144 samples collected from fields, 45 R. solanacearum isolates were isolated on Modified SMSA media. This survey results show that tomato bacterial wilt is a real threat to tomato production in the central region of Togo.

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Mitigating Natural Heat Stress for Tomato (Solanum lycopersicum L) Production through Management Techniques

Asian Journal of Agricultural and Horticultural Research ◽

10.9734/ajahr/2021/v8i130106 ◽

2021 ◽

pp. 7-18

Author(s):

Tika Ram Chapagain ◽

Arjun Kumar Shrestha ◽

Moha Dutta Sharma ◽

Kalyani Mishra Tripathi ◽

Aravind Srivastava

Keyword(s):

Solanum Lycopersicum ◽

Rice Husk ◽

Production Management ◽

Monsoon Season ◽

Fruit Weight ◽

Fruit Yield ◽

Late Winter ◽

Tomato Production ◽

Solanum Lycopersicum L ◽

Management Techniques

An experiment was conducted to identify suitable production management techniques for tomato (Solanum lycopersicum L.) cultivation during late winter-pre monsoon season in plains of Nepal. For this, organic mulches (rice straw, dried grass, and rice husk) were compared with SN (shade net) and no-mulch (bare field) condition for tomato yield in 2018 and 2019. The pooled analysis of all observed morphological and yield traits were performed and they differed significantly. Rice husk significantly affected number of fruits per inflorescence though number of inflorescence per plant and flowers per inflorescence were similar among organic mulches. The highest fruit yield per plant (4.44 kg plant-1) was obtained with rice husk, the other mulches and SN were at par but the lowest yield (2.75 kg plant-1) was obtained with no-mulch. Similarly, rice husk mulch contributed to the highest number of fruits per inflorescence (5.22), highest fruit weight (46.58 g) and diameter (4.99 cm).Fruit yield positively and significantly associated with fruit per inflorescence(0.78***), fruit diameter (0.65***) and an average fruit weight (0.56***).Organic mulches significantly (p=0.05) contributed to higher yield (86.01 t ha-1) over SN (76.55 t ha-1).Higher values for total soluble solid, Vitamin C and fruit firmness were observed under rice husk mulching. The result of the present study found rice husk mulching as better option for tomato production as compared to SN and no-mulch condition.

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PHYSICO-CHEMICAL PROPERTIES OF TOMATO SEED OIL (SOLANUM LYCOPERSICUM L.) FOR BIODIESEL PRODUCTION

Acta Horticulturae ◽

10.17660/actahortic.2015.1081.30 ◽

2015 ◽

pp. 237-244 ◽

Cited By ~ 5

Author(s):

A.M. Giuffrè ◽

V. Sicari ◽

M. Capocasale ◽

C. Zappia ◽

T.M. Pellicanò ◽

...

Keyword(s):

Solanum Lycopersicum ◽

Seed Oil ◽

Chemical Properties ◽

Biodiesel Production ◽

Tomato Seed ◽

Solanum Lycopersicum L ◽

Physico Chemical ◽

Tomato Seed Oil

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Evaluation of Various Genotypes of Tomato (Solanum lycopersicum L.) on Quality Traits under Temperate Conditions of Kashmir

Agricultural Science Digest - A Research Journal ◽

10.18805/ag.d-5412 ◽

2021 ◽

Author(s):

B. Srinivasulu ◽

M. Rashid ◽

P. Pradeep Kumar ◽

D. Srikanth ◽

P.K. Singh

Keyword(s):

Solanum Lycopersicum ◽

Ascorbic Acid Content ◽

Soluble Solids ◽

Quality Traits ◽

Tomato Production ◽

Titrable Acidity ◽

Solanum Lycopersicum L ◽

Commercial Cultivation ◽

Lycopene Content ◽

Result Analysis

Background: Tomato is one of the most important vegetable crop grown in the world. Identification of better genotypes among the existing germplasm leads to the success of breeding programme. Elite genotypes should be known for our trait of interest. Methods: A field experiment was carried out at Vegetable Experimental Field, SKUAST-K, Shalimar, Srinagar during Kharif-2018 in which twenty seven genotypes of tomato (Solanum lycopersicum L.) were evaluated to estimate the performance of genotypes on various quality traits like lycopene content, titrable acidity, ascorbic acid content, total soluble solids and juice to pulp ratio. Result: Analysis of variance revealed significant differences among the genotypes for all the traits under studied. Highest lycopene content was recorded in the genotypes 2015/TODHYB-1, Roma and VRT-19 Whereas highest TSS content was exhibited by Kashi Aman, Roma, Jawahar-99 and Shalimar Hybrid Tomato-1. Highest titrable acidity recorded in Marglobe followed by 2015/TODHYB-4 and Kashi Hemanth. Juice to pulp ratio was highest in the genotypes namely, 2016/TODVAR-5 and Kashi Vishesh. Hence, the best performed genotypes can be used as such in promotion of tomato production programme as elite germplasm lines/varieties or may be recommended for commercial cultivation after testing them over years and locations.

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CARACTERÍSTICAS PRODUTIVAS E MORFOLÓGICAS DE FRUTOS DE TOMATE EM RESPOSTA A SISTEMAS DE RALEIO

Nativa ◽

10.31413/nativa.v7i5.7455 ◽

2019 ◽

Vol 7 (5) ◽

pp. 478

Author(s):

Tiago Aparecido Parca ◽

Everton Geraldo de Morais ◽

Henrique José Guimarães Moreira Maluf ◽

Luciano Donizete Gonçalves ◽

Diorge Maykon de Oliveira ◽

...

Keyword(s):

Solanum Lycopersicum ◽

Relative Frequency ◽

Fruit Weight ◽

Morphological Features ◽

Transverse Diameter ◽

Total Production ◽

Tomato Fruits ◽

Tomato Production ◽

Tomato Plants ◽

Solanum Lycopersicum L

O objetivo do presente trabalho foi avaliar o efeito de técnicas de raleio na produção e em características morfológicas de frutos de tomate. O tomateiro foi submetido a seis diferentes técnicas de raleio de frutos, com condução de diferentes números de racemos por planta. Ao final do experimento, após a colheita, foi avaliado o diâmetro médio longitudinal (DLM) e transversal (DTM) dos frutos, número de frutos por planta (NF), peso médio de frutos (PMF), produção total por planta (Prod T), produção de frutos grande (Prod G), médio (Prod M) e pequeno (Prod P), e a frequência relativa de cada classe de diâmetro. A técnica de raleio que consistiu na condução de plantas com 7 racemos, com 6 frutos por racemoaté o 4° racemo e acima deste, 4 frutos por racemo(R3) aumentou a Prod G, a frequência relativa da classe grande, a Prod T, DTM, DLM e PMF. Técnicas de raleio que resultaram em maior NF reduziram a qualidade morfológica dos frutos, bem como a condução de plantas com menos de sete racemos reduziu a produção de tomates. A adoção da técnica R3 no tomateiro reuni alta produção de frutos por planta com aumento da qualidade morfológica do fruto.Palavras-chave: Solanum lycopersicum L.; desbaste de frutos; qualidade de tomates; classes de diâmetro de frutos; relação fonte:dreno. PRODUCTIVE AND MORPHOLOGICAL FEATURES OF TOMATO FRUITS IN RESPONSE TO THINNING SYSTEMS ABSTRACT: The aim of this work was to evaluate the effect of thinning techniques on the production and morphological features of tomato fruits. Tomato plants were submitted to six different thinning practices, with different numbers of racemes per plant. At the end of the experiment, the mean longitudinal diameter (MLD) and transverse diameter (MTD) of fruits, number of fruits per plant (NF), average fruit weight (AFW), total production per plant (T Prod), production of fruits large (Prod L), middle (Prod M) and small (Prod S), and the relative frequency of each diameter class. The thinning technique, which consisted in the conduction of plants with 7 racemes, with 6 fruits per raceme up to the 4th raceme and above this, 4 fruits per raceme (R3) increased the Prod L, the relative frequency of the large class, T Prod, MLD, MTD, and AFW. Thinning techniques that provide greater NF reduced the morphological quality of fruits, as well as the conduction of plants with less than seven racemes decreased tomato production. Adoption of the R3 technique in the tomato plants bring together high fruit production with an increase in the fruit morphological quality.Keywords: Solanum lycopersicum L.; fruit pruning; tomato quality; fruit diameter classes; source:sink ratio.

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Evaluación de tres enraizadores comerciales en la producción de plántulas de tomate indeterminado (Solanum lycopersicum (L.) Lam)

RECUBRIMIENTO COMESTIBLE CON BASE DE PIÑON MEXICANO (Jatropha curcas) SOBRE LA CALIDAD DE CHAYOTE MINIMAMENTE PROCESADO ◽

10.32854/agrop.v12i9.1491 ◽

2019 ◽

Vol 12 (12) ◽

Author(s):

M. Arébalo-Madrigal ◽

J.L. Escalante-González ◽

J.B. Yáñez-Coutiño ◽

M.E. Gallegos-Castro

Keyword(s):

Solanum Lycopersicum ◽

Solanum Lycopersicum L

Objetivo: Evaluar el desarrollo de plántula de tomate indeterminado bajo condiciones protegidas, aplicando tres enraizadores y un testigo para aumentar la producción del cultivo en la región. Diseño/metodología/aproximación: se utilizó bajo un diseño experimental en bloques completamente al azar, el cual consistió de cuatro tratamientos correspondiendo a cada uno de los bloques, donde cada bloque pertenecía a cuatro charolas de unicel de 200 cavidades con sustrato de BM2, con cuatro repeticiones cada uno, teniendo 15 unidades experimentales por tratamiento, sumando un total de 60 unidades experimentales, teniendo un total de 240 plántulas de tomate por todo el experimento. Resultados: Como resultado se obtuvo que el enraizador de Phyto Root tuvo un gran efecto en cuanto al desarrollo de altura, grosor de tallo, numero de hojas, biomasa aérea y peso del cepellón, parámetros importantes que debe tener una plántula para su desarrollo y crecimiento al momento de trasplante a campo. Limitaciones del estudio/implicaciones: El manejo agronómico desde la siembra en charolas, es necesario que sea uniforme en todos los tratamientos y las repeticiones para tener mejores resultados en cuanto el efecto de los enraizadores. Hallazgos/conclusiones: Para obtener plántulas de buena calidad en el momento de trasplante a campo se le recomienda a la empresa y a los productores de plántulas utilizar el tratamiento de Phyto Root, ya que fue la que mejor respuesta tuvo.

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