Effect of potassium nutrition on tomato plant growth and fruit development

The influence of stage of fruit development and plant growth regulators on somatic embryogenesis and the relation of cultivar response on somatic embryogenesis and subsequent plant development have been investigated in eight cultivars of pecan [Carya illinoensis (Wangenh.) C. Koch]. Explants from the micropylar region of the ovule were more embryogenic when removed from fruits in the liquid endosperm stage than were intact ovules from less-mature fruits or from cotyledonary segments of more-mature fruits. Explants conditioned on medium containing auxin alone or auxin + cytokinin produced more somatic embryos than medium containing cytokinin alone. Under the conditions of this study, frequency of embryogenesis, as well as the germination of somatic embryos leading to plant development, indicated appreciable variation among cultivars. Plant development was greatest by far from somatic embryos of `Schley' than other cultivars studied.

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Effect of Co-Inoculation of Bacillus sp. Strain with Bacterial Endophytes on Plant Growth and Colonization in Tomato Plant (Solanum lycopersicum)

Microbiology Research ◽

10.3390/microbiolres12020032 ◽

2021 ◽

Vol 12 (2) ◽

pp. 480-490

Author(s):

Ahsanul Salehin ◽

Ramesh Raj Puri ◽

Md Hafizur Rahman Hafiz ◽

Kazuhito Itoh

Keyword(s):

Plant Growth ◽

Solanum Lycopersicum ◽

Plant Growth Promotion ◽

Tomato Plant ◽

Growth Promotion ◽

Growth Parameters ◽

The Other ◽

Time Interval ◽

Bacillus Sp ◽

F 33

Colonization of a biofertilizer Bacillus sp. OYK strain, which was isolated from a soil, was compared with three rhizospheric and endophytic Bacillus sp. strains to evaluate the colonization potential of the Bacillus sp. strains with a different origin. Surface-sterilized seeds of tomato (Solanum lycopersicum L. cv. Chika) were sown in the sterilized vermiculite, and four Bacillus sp. strains were each inoculated onto the seed zone. After cultivation in a phytotron, plant growth parameters and populations of the inoculants in the root, shoot, and rhizosphere were determined. In addition, effects of co-inoculation and time interval inoculation of Bacillus sp. F-33 with the other endophytes were examined. All Bacillus sp. strains promoted plant growth except for Bacillus sp. RF-37, and populations of the rhizospheric and endophytic Bacillus sp. strains were 1.4–2.8 orders higher in the tomato plant than that of Bacillus sp. OYK. The plant growth promotion by Bacillus sp. F-33 was reduced by co-inoculation with the other endophytic strains: Klebsiella sp. Sal 1, Enterobacter sp. Sal 3, and Herbaspirillum sp. Sal 6., though the population of Bacillus sp. F-33 maintained or slightly decreased. When Klebsiella sp. Sal 1 was inoculated after Bacillus sp. F-33, the plant growth-promoting effects by Bacillus sp. F-33 were reduced without a reduction of its population, while when Bacillus sp. F-33 was inoculated after Klebsiella sp. Sal 1, the effects were increased in spite of the reduction of its population. Klebsiella sp. Sal 1 colonized dominantly under both conditions. The higher population of rhizospheric and endophytic Bacillus sp. in the plant suggests the importance of the origin of the strains for their colonization. The plant growth promotion and colonization potentials were independently affected by the co-existing microorganisms.

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The effect of seaweed extract on tomato plant growth, productivity and soil

Journal of Applied Phycology ◽

10.1007/s10811-021-02387-2 ◽

2021 ◽

Author(s):

Hashmath Inayath Hussain ◽

Naga Kasinadhuni ◽

Tony Arioli

Keyword(s):

Plant Growth ◽

Tomato Plant ◽

Root Zone ◽

Soil Health ◽

Dry Weight ◽

Bacterial Count ◽

Community Diversity ◽

Seaweed Extract ◽

Total Bacterial Count ◽

Soil Biology

AbstractThis study investigated the effects of seaweed extract (SWE) made from the brown algae Durvillaea potatorum and Ascophyllum nodosum on plants and soil. The application of SWE to soil growing tomato plants showed dual effects. SWE comprehensively improved tomato plant growth (flower clusters, flower number, fruit number, root length, root and shoot dry weight, SPAD) and increased plant productivity (yield and quality). Similarly, SWE application effected soil biology at the soil root zone by increasing total bacterial count and available soil nitrogen and impacting bacterial community diversity with an increase in certain bacterial families linked to soil health. A broader understanding of the effects of SWE on the plant-soil ecosystem may offer breakthrough approaches for sustainable food production.

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MODIFICATION OF MICROCLIMATE CONDITIONS FOR IMPROVING TOMATO PLANT GROWTH COMPONENTS AND WATER USE EFFICIENCY

Misr Journal of Agricultural Engineering ◽

10.21608/mjae.2021.106108.1053 ◽

2021 ◽

Vol 0 (0) ◽

pp. 0-0

Author(s):

Wafaa Abd El-Bary ◽

Mahmoud Hegazi ◽

Khaled El-Bagoury ◽

Wael Sultan ◽

Manal Mubarak

Keyword(s):

Plant Growth ◽

Water Use Efficiency ◽

Water Use ◽

Tomato Plant ◽

Use Efficiency ◽

Microclimate Conditions

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Polysaccharides extracted from Moroccan seaweed: a promising source of tomato plant growth promoters

Journal of Applied Phycology ◽

10.1007/s10811-018-1421-6 ◽

2018 ◽

Vol 30 (5) ◽

pp. 2953-2962 ◽

Cited By ~ 7

Author(s):

A. Mzibra ◽

A. Aasfar ◽

H. El Arroussi ◽

M. Khouloud ◽

D. Dhiba ◽

...

Keyword(s):

Plant Growth ◽

Tomato Plant ◽

Growth Promoters ◽

Plant Growth Promoters ◽

Promising Source

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Effect of Potassium Nutrition on Some Enzymes of the Tomato Plant

Annals of Botany ◽

10.1093/oxfordjournals.aob.a085155 ◽

1976 ◽

Vol 40 (3) ◽

pp. 461-471 ◽

Cited By ~ 11

Author(s):

R. T. BESFORD ◽

G. A. MAW

Keyword(s):

Tomato Plant ◽

Potassium Nutrition

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Reduction of Ryegrass (Lolium multiflorum Lam.) Natural Re-Sowing with Herbicides and Plant Growth Regulators

Agronomy ◽

10.3390/agronomy10121960 ◽

2020 ◽

Vol 10 (12) ◽

pp. 1960

Author(s):

Afonso Henrique Schaeffer ◽

Otávio Augusto Schaeffer ◽

Diógenes Cecchin Silveira ◽

João Arthur Guareschi Bertol ◽

Debora Kelli Rocha ◽

...

Keyword(s):

Plant Growth ◽

Plant Growth Regulators ◽

Seed Production ◽

Growth Regulators ◽

Fruit Development ◽

Lolium Multiflorum ◽

Development Stage ◽

Ammonium Glufosinate ◽

Physiological Quality

Ryegrass (Lolium multiflorum Lam.) is the main winter weed of crops in Southern Brazil. High competitiveness, adaptability, widespread resistance to herbicides and seed dormancy make the plant a permanent problem. Herbicides, as well as plant growth regulators, can be used as a management option for ryegrass seed production, however there is no consensus among authors at which stage of the plant the application is most effective. Thus, this study aimed to evaluate the production and physiological quality of ryegrass seeds in response to the application of herbicides and plant growth regulators in three stages of plant development (inflorescence emergence, flowering and fruit development). Each treatment consisted of applying two different doses of each of the active ingredients: ammonium glufosinate, clethodim, glyphosate, iodosulfuron-methyl, paraquat and 2,4-D (herbicides); ethephon and trinexapac-ethyl (plant growth regulators), still an untreated control, totaling 17 treatments for each stage of development. The experimental design used was randomized blocks, with three replications. The variables evaluated were: seed production (kg ha−1), thousand seed weight (g), viability (%), germination (%), first germination count (%), dormant seeds (%) and dead seeds (%). The ryegrass seed production reduced 100% with clethodim, glyphosate, ammonium glufosinate or paraquat applied in the inflorescence emergence or flowering stages. In the fruit development stage, all treatments (herbicides and plant growth regulators) caused deleterious effects on seed production, the greatest effect occurred with paraquat (95%). Paraquat, ammonium glufosinate and clethodim affected the physiological quality of the seeds when applied in fruit development stage. This research demonstrated that the application of herbicides in the ryegrass reproductive stage decreases its seedbank replenishment (natural re-sowing), with the potential to harm its progeny.

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