scholarly journals Effects of pyrimethanil on pollen meiosis of tomato plant (Lycopersicon lycopersicum Mill.)

1970 ◽  
Vol 36 (1) ◽  
pp. 85-88
Author(s):  
Teoman Kesercioglu ◽  
Ilkay Öztürk Çali
Keyword(s):  
Tomato Plant ◽  
Tap Water ◽  
Recommended Dosage ◽  
Flower Bud ◽  
Seed Formation ◽  
Tomato Plants ◽  
Lycopersicon Lycopersicum

Effects of Mythos SC 300 (300 g/l pyrimethanil), a fungicide on tomato plants were studied by observation of pollen meiosis. The fungicide was applied at double the recommended dosage (250 ml/100 l tap water). The anthers of flower bud fixed in Carnoy's fluid were stained with 2% aceto-orcein. The fungicide caused various anomalies in pollen meiosis, decrease in pollen yield and consequently influenced future seed formation.  

scholarly journals DESENVOLVIMENTO DO TOMATEIRO INDUSTRIAL EM RESPOSTA A DIFERENTES NÍVEIS DE IRRIGAÇÃO

Irriga ◽  
2020 ◽  
Vol 25 (3) ◽  
pp. 432-448
Author(s):  
Cícero José da Silva ◽  
José Antônio Frizzone ◽  
César Antônio da Silva ◽  
Nadson de Carvalho Pontes ◽  
Luiz Felipe Mariano da Silva ◽  
...  
Keyword(s):  
Leaf Area Index ◽  
Leaf Area ◽  
Plant Development ◽  
Tomato Plant ◽  
Dry Mass ◽  
Area Index ◽  
Tomato Plants ◽  
Subsurface Drip ◽  
Irrigation Levels ◽  
E Mail

DESENVOLVIMENTO DO TOMATEIRO INDUSTRIAL EM RESPOSTA A DIFERENTES NÍVEIS DE IRRIGAÇÃO     Cícero José da Silva1; José Antônio Frizzone2; César Antônio da Silva3; Nadson de Carvalho Pontes4; Luiz Felipe Mariano da Silva5 E Ênio Eduardo Basílio6   1Professor do Curso Bacharelado em Agronomia, Instituto Federal Goiano – Campus Morrinhos – GO, BR 153, Km 633, Zonal Rural, CEP;75650-000, Morrinhos – GO, Brasil. E-mail: [email protected] 2Professor Aposentado Colaborador Senior, Departamento de Engenharia de Biossitemas, Escola Superior de Agricultura “Luiz de Queiroz” – Universidade de São Paulo, Avenida Pádua Dias, N 11, Caixa Postal 9, CEP: 13418-900, Piracicaba – SP, Brasil. E-mail: [email protected] 3Professor do Curso Bacharelado em Agronomia, Instituto Federal Goiano – Campus Morrinhos – GO, BR 153, Km 633, Zonal Rural, CEP;75650-000, Morrinhos – GO, Brasil. E-mail: [email protected] 4Professor do Curso Bacharelado em Agronomia, Instituto Federal Goiano – Campus Morrinhos – GO, BR 153, Km 633, Zonal Rural, CEP;75650-000, Morrinhos – GO, Brasil. E-mail: [email protected] 5Estudante de Iniciação Científica do Curso Bacharelado em Agronomia, Instituto Federal Goiano – Campus Morrinhos – GO, BR 153, Km 633, Zonal Rural, CEP;75650-000, Morrinhos – GO, Brasil. E-mail: [email protected] 6Técnico Administrativo, Mestre em Olericultura, Instituto Federal Goiano – Campus Morrinhos – GO, BR 153, Km 633, Zonal Rural, CEP;75650-000, Morrinhos – GO, Brasil. E-mail: [email protected]     1 RESUMO   O objetivo desta pesquisa foi avaliar o desenvolvimento de plantas de tomateiros submetidas a diferentes níveis de reposição da irrigação, aplicados via sistema gotejamento subsuperficial durante duas safras. O experimento foi conduzido no delineamento em blocos ao acaso, com quatro repetições. Foram avaliados cinco níveis de irrigação: 50, 75, 100, 125 e 150% da evapotranspiração da cultura (%ETc) medida com lisímetros de pesagem, sobre o desenvolvimento de plantas de tomateiro. Cada parcela experimental foi composta por três fileiras de plantas de 5,5 m de comprimento, espaçadas a 1,10 m entre si e 0,30 m entre plantas. As avaliações de área foliar, índice de área foliar, massa seca de raiz, caule, folhas, flores, frutos e total foram realizadas aos 45, 65 e 85 dias após o transplante das mudas. Irrigações deficitárias e em excesso prejudicaram o desenvolvimento vegetativo das plantas de tomateiro. Os maiores valores de área foliar, índice de área foliar e massa seca total das plantas de tomateiro foram estimados com níveis de irrigação que variaram de 96 a 112% da ETc, variando de acordo com o ano de avaliação e a fase de desenvolvimento do tomateiro. Irrigações deficitárias e excessivas prejudicaram a floração e frutificação do tomateiro híbrido BRS Sena.             Palavras-chave: Solanum lycopersicom L.; gotejamento enterrado; manejo da irrigação; massa seca.             Silva, c. j. da; FRIZZONE, J. A.; SILVA, C. A. da; pontes, n. de C.; SILVA, L. F. M. da; BASÍLIO, Ê. E. Industrial tomato plant development in response to different irrigation levels    2 ABSTRACT   This research aimed to evaluate tomato plant development submitted to different irrigation replacement levels, irrigated via subsurface drip system for two harvests. The experiment was conducted under a randomized complete block design with four replications. Five irrigation levels were evaluated: 50, 75, 100, 125 and 150% of crop evapotranspiration (% ETc) measured with weighing lysimeters over the tomato plants development. Each experimental plot was composed of three plants rows with 5.5 m long, spaced 1.10 m apart and 0.30 m between plants. Leaf area, leaf area index, root dry matter, stem, leaves, flowers, fruits and total were evaluated at 45, 65 and 85 days after seedlings transplanting. Deficit and excess irrigation impaired the vegetative development of tomato plants. The highest values of leaf area, leaf area index and plants total dry mass were estimated with irrigation levels ranging from 96 to 112% of ETc, depending on the evaluation harvest year and the crop development phase. Deficit and excessive irrigation affected the flowering and fruiting of the hybrid tomato BRS Sena.   Keywords: Solanum lycopersicom L; subsurface drip irrigation; irrigation manegement; dry mass.

Some physiological effects of cycloheximide in soil on the tomato plant

1971 ◽  
Vol 49 (8) ◽  
pp. 1419-1424
Author(s):  
G. D. Thorn ◽  
L. T. Richardson
Keyword(s):  
Tomato Plant ◽  
Marked Reduction ◽  
Ion Concentration ◽  
Aminobutyric Acid ◽  
Physiological Effects ◽  
Tomato Plants

Cycloheximide applied as a drench to the soil of potted tomato plants caused reduced transpiration, and a marked reduction of exudate volume from the stumps of detopped plants. The exudate of treated plants showed increased levels of γ-aminobutyric acid and reduced levels of glutamine and α-ketoglutarate; Na ion concentration was increased and K ion concentration lowered. These effects were apparent within 2 h of application of cycloheximide.

scholarly journals Effects of a fungicide on the morphology and viability of pollens of tomato (Lycopersicon esculentum Mill.)

1970 ◽  
Vol 38 (2) ◽  
pp. 115-118 ◽  
Author(s):  
Ilkay Öztürk Çali ◽  
Feyza Candan
Keyword(s):  
Lycopersicon Esculentum ◽  
Phytophthora Infestans ◽  
Key Words ◽  
Pollen Morphology ◽  
Pollen Viability ◽  
Polar View ◽  
Control Group ◽  
Recommended Dosage ◽  
Tomato Plants ◽  
Equatorial View

Effects of Agri Fos 400 (Mono and di-potassium phosphanate), a fungicide widely used on tomatoes grown in greenhouses in Turkey against Phytophthora infestans were studied on the morphology and viability of tomato (Lycopersicon esculentum Mill.) pollens. The fungicide was applied on tomato plants at recommended dosage (4 ml/l water) and double the recommended dosage (8 ml/l water). The fungicide caused changes in the morphological structures of pollens. Some pollen morphological structures that are not observed in the control group were encountered in the pollens due to application of Agri Fos 400 in equatorial view at 8 ml/l and in polar view at 4 ml/l. Level of pollen viability decreased as the dosage increased.   Key words: Fungicide; Phytophthora infestans; Tomato; Pollen morphology; Viability DOI: 10.3329/bjb.v38i2.5134 Bangladesh J. Bot. 38(2): 115-118, 2009 (December)

Mycoplasma-like organisms as causal agents of potato purple top wilt in Queensland

1985 ◽  
Vol 36 (3) ◽  
pp. 443 ◽  
Author(s):  
RM Harding ◽  
DS Teakle
Keyword(s):  
Electron Microscopy ◽  
Thin Section ◽  
Strong Evidence ◽  
Tomato Plant ◽  
Tomato Plants ◽  
Potato Plants ◽  
Thin Section Electron Microscopy ◽  
Section Electron ◽  
Potato Purple Top ◽  
Section Electron Microscopy

The eggplant little-leaf agent was graft transmitted to tomato causing big-bud symptoms. Transmission from the big-bud tomato to potato by grafting or the leafhopper Orosius argentatus resulted in the development of purple top wilt symptoms. Thin-section electron microscopy revealed mycoplasma-like organisms present in the phloem sieve elements of a big-bud tomato plant and purple top wilt potato plants infected by grafting or leafhoppers. When tubers from graft-infected potato plants were planted, 73% produced spindly shoots and 44% of these later developed purple top wilt symptoms. When scions from either field-infected or experimentally infected potato plants showing purple top wilt symptoms were grafted onto tomato plants, 24% and 62% respectively developed big-bud symptoms. The results provide strong evidence for the mycoplasmal aetiology of some, if not all, potato purple top wilt in Queensland.

A UV-light activated cinnamic acid isomer regulates plant growth and gravitropism via an ethylene receptor-independent pathway

1999 ◽  
Vol 26 (4) ◽  
pp. 325 ◽  
Author(s):  
Xiao Xian Yang ◽  
Hiu Wan Choi ◽  
Shang Fa Yang ◽  
Ning Li
Keyword(s):  
Tomato Plant ◽  
Uv Light ◽  
Tomato Fruit ◽  
Ethylene Biosynthesis ◽  
Banana Fruit ◽  
Ethylene Receptor ◽  
Cinnamic Acids ◽  
Tomato Plants ◽  
Tomato Fruit Ripening ◽  
Negative Gravitropism

Naturally occurring cinnamic acids (CA) exist in both trans- and cis-isoforms. UV-light irradiation of trans-CA is able to produce cis-CA. cis-CA was found to possess auxin-like activity before. In contrast, the vapor of cis-CA induced an epinastic response in tomato plants just as ethylene does. Given the existence of a double bond in and the gaseous nature of cis-CA, we suspected that cis-CA might also function as an ethylene-like compound. To distinguish between these possibilities, we selected an ethylene perception-deficient tomato plant, Never-ripe (Nr), and an ethylene biosynthesis-deficient tomato plant, A11. Not only did the vapor of cis-CA fail to trigger A11 tomato fruit ripening but it also delayed the ripening of banana fruit. Moreover, the vapor of cis-CA induced epinasty and the ‘triple response’ in both the wild type and Nr tomato plants, indicating that the vapor of cis-CA does not act via an ethylene receptor-dependent pathway. Furthermore, the vapor of cis-CA inhibited the negative gravitropic response of stems of both etiolated Nr seedlings and young plants, whereas ethylene had little effect on the negative gravitropism of the Nr plants. These results support the conclusion that the action sites of the vapor of cis-CA and ethylene are fundamentally different.

scholarly journals Salinity and Growing Medium Regulate Growth, Morphology and Ion Uptake of Gaillardia aristata

2007 ◽  
Vol 25 (2) ◽  
pp. 89-94 ◽  
Author(s):  
Genhua Niu ◽  
Denise S. Rodriguez ◽  
Yin-Tung Wang
Keyword(s):  
Saline Solution ◽  
Tap Water ◽  
Dry Weight ◽  
Growth Morphology ◽  
Flower Bud ◽  
Shoot Dry Weight ◽  
Elevated Salinity ◽  
Growing Medium ◽  
Lateral Shoots ◽  
Flower Bud Abortion

Abstract A study was conducted to characterize the response of Gaillardia aristata Pursh to salinity (0.8, 2.0 or 4.0 dS/m) and growing media: 100% perlite (Perlite), 100% Sunshine Mix No. 4 (Mix), 1 to 1 (by vol) perlite and Sunshine Mix No. 4 (Perlite Mix), or 1 to 1 Sunshine Mix No. 4 and composted mulch (Mix Mulch). Type of medium did not influence shoot dry weight (DW). However, root to shoot DW ratio was highest for plants grown in Perlite. Shoot DW of plants irrigated with tap water (0.8 dS/m) was higher compared to those irrigated with saline solution at 2.0 or 4.0 dS/m, except for those grown in Mix. Salinity did not alter the root to shoot DW ratio. In general, elevated salinity led to relatively short plants. Plants were taller when grown in Perlite or Mix Mulch with fewer lateral shoots compared to plants grown in Mix and Perlite Mix. Flower bud abortion occurred in plants grown in Mix or Perlite Mix, while this phenomenon was not observed in plants grown in Perlite or Mix Mulch. Overall, plants performed better in Perlite and Mix Mulch than Mix and Perlite Mix.

scholarly journals Thermal indices in relation to crop phenology and seed yield of pigeon pea (Cajanus cajan L. Millsp.) grown in the north bank plains zone of Assam

MAUSAM ◽  
2021 ◽  
Vol 67 (2) ◽  
pp. 397-404
Author(s):  
RIJUMANI RAJBONGSHI ◽  
PRASANTA NEOG ◽  
P. K. SARMA ◽  
KUSHAL SARMAH ◽  
M. K. SARMA ◽  
...  
Keyword(s):  
Seed Yield ◽  
Sandy Loam ◽  
Growth Period ◽  
Pigeon Pea ◽  
Flower Bud ◽  
Thermal Indices ◽  
Seed Formation ◽  
Physiological Maturity ◽  
Sowing Dates ◽  
Use Efficiency

Two varieties of pigeon pea viz., BC (local) and ICPL 88039 were grown on the sandy loam soils of AICRPDA research farm of B. N. College of Agriculture, AAU in two consecutive kharif seasons of 2012-13 to 2013-14. Both the cultivars were sown on three different dates at ten days interval starting from 3rd June to 23rd June. GDD accumulation for attaining different phenological events viz., emergence, initiation of 1st flower bud and flower appearance, 50 per cent flowering, 1st pod formation, 1st seed formation and physiological maturity were worked out. The cumulative GDD accumulations up to physiological maturity were relatively higher in BC (local) which varied from 3395.6 to 3593.5 °C day, whereas, in ICPL 88039, it varied from 2945.0 to 3296.7 °C day in different sowings and seasons. A decreasing trend in accumulated GDD for attaining any Phenological event was observed with successive delay in sowings in both the cultivars in the two seasons. In both the crop seasons, Pheno-Thermal Index (PTI) varied from 16.67 to 18.18 °C day growth day-1, in BC (local) and 18.31 to 19.11 °C day growthday-1 in ICPL 88039 during the vegetative growth period under all the sowing dates while, in the reproductive growth stage, it was comparatively lower and ranged from 7.96 to 8.23 °C day growthday-1 in BC (local) and 10.28 to 11.87 °C day growthday-1 in ICPL 88039. Seed yield heat use efficiency (HUE) in BC (local) varied from 0.207 to 0.296 kg ha-1 °Cday-1, whereas, in ICPL 88039 it varied from 0.201 to 0.312 kg ha-1°Cday-1 under different sowing dates in both crop seasons. Seed yield heat use efficiency was relatively higher in 2013-14 followed by 2012-13 in both the cultivars which indicated the significant differences in using the heat, available to the plants.   

scholarly journals Bioremoval of Zinc Using the Tomato Plant, Lycopersicon esculentum

2020 ◽  
Vol 3 (1) ◽  
pp. 7-19
Author(s):  
Yamuna Devi S Devi S ◽  
Surendran A ◽  
Thatheyus A.J
Keyword(s):  
Lycopersicon Esculentum ◽  
Tomato Plant ◽  
Zinc Sulphate ◽  
Zinc Level ◽  
Residual Concentration ◽  
Tomato Plants ◽  
Fe And Mn ◽  
Below Ground ◽  
Living Organisms

Effluents discharged from various industries contain heavy metals. They reach the environment and affect the quality of air, water and soil. Though they are needed in trace quantities for living organisms, they become toxic when they exceed the threshold concentrations. Hence the present study has been designed to test the efficiency of Lycopersicon esculentum in removing zinc from soil. The tomato plants were grown in soil applied with 100, 200, 300, 400 and 500ppm of zinc sulphate for 60 days. Every fortnight, soil samples were taken and analysed for the levels of Cu, Zn, Fe and Mn. Percent removal of zinc by the plant was calculated from the residual concentration. More removal was noticed in higher concentrations of zinc. After 60 days of treatment, levels of Cu, Zn, Fe and Mn were analysed in the above ground and below ground parts of the tomato plant. Zinc level was 90 ppm in both cases and the same in plants grown in all the concentrations of zinc sulphate. Fluctuations in chlorophyll content were noticed while decline was observed in microbial colonies. The data were subjected to two way analysis of variance and the results are discussed.

scholarly journals GROWTH IDENTIFICATION OF TOMATO PLANTS USING TENSOR FLOW

2021 ◽  
Vol 6 (1) ◽  
Author(s):  
Bharath Kumar G, ◽  
Hemanth V ◽  
Balaji K.P. ◽  
Makinani Gowri Shankar M ◽  
Tupili Sangeetha ◽  
...  
Keyword(s):  
Neural Networks ◽  
Tomato Plant ◽  
Image Sensor ◽  
Project Work ◽  
Growth Stages ◽  
Growth Monitoring ◽  
Tomato Plants ◽  
Vertical Farming ◽  
Effective Growth ◽  
Plant Farming

Vertical Farming is making the necessary daily vegetables available in a minimal space with effective growth. Tomato plant farming is one of it. In tomato plant farming growth monitoring is a key issue which require man-work and experience. In this project work, an attempt has been made to Analyse and Design for a growth identification of tomato plants. This project work involves planning, analysis, designs, and many more to identify growth stages. Vertical Farming is making the necessary daily vegetables available in a minimal space with effective growth. Tomato plant farming is one of it. In tomato plant farming growth monitoring is a key issue which require man-work and experience. To make it effective we are intruding Neural Networks for growth identification for Tomato plant which not require man-work. Without the involvement of man work, we track the plant growth with Neural Networks. And also, we are doing plant stage detection it shows the entire information of that plant such as temperature, quantity of water needed, etc. With the help of an IOT device all the data are stored in a database. We use raspberry pie IOT device and image sensor to store all the data to the database created.

scholarly journals Genome-Wide Identification of Ralstonia solanacearum Genes Required for Survival in Tomato Plants

mSystems ◽  
2021 ◽  
Author(s):  
Yaxing Su ◽  
Yanan Xu ◽  
Hailing Liang ◽  
Gaoqing Yuan ◽  
Xiaogang Wu ◽  
...  
Keyword(s):  
Ralstonia Solanacearum ◽  
Tomato Plant ◽  
Pathogenic Mechanism ◽  
Hostile Environment ◽  
Full Understanding ◽  
Tomato Plants ◽  
Content Type ◽  
Genome Wide

Tomato plant xylem is a nutritionally limiting and dynamically changing habitat. Studies on how R. solanacearum survives in this hostile environment are important for our full understanding of the pathogenic mechanism of this bacterium.

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