Effect of Lactobacillus plantarum on germination and growth of tomato seedlings

The experiment was implemented by CRD design with three replications and lasted for 40 days, from 5 October until 15 November 2020. Four extract concentrations of D. graveolens 0, 2, 6, and 10% were used. The concentration of 0% was considered as control. The allelopathic effect has been studied on five weed species; Amaranthus retroflexus L., Portulaca oleracea L., Lolium multiflorum Lam., Sorghum halepense L., and Cuscuta campestris Yunck. The research also aimed to determine the effect of Stinkwort extract on the growth of tomato seedlings. All concentrations affected seed germination for all studied weeds. The concentration of 10% was more influential in growth-related indicators compared to other concentrations. The seeds of L. multiflorum and rhizomes of S. halepense were more tolerant to D. graveolens allelochemicals in germination rate than A. retroflexus, P. oleracea, and C. campestris. All concentrations led to a reduction in the weed heights and the wet and dry weights compared with the controls. The effect of the extract with various concentrations was catalytic for the growth of tomato seedlings, as the average height of tomato seedlings was in direct proportion to the concentration.

Download Full-text

Allelopathic Effect of Aqueous Extracts of Stinkwort (Dittrichia graveolens L.) on Germination and Growth of Some Weed Species

Records of Agricultural and Food Chemistry ◽

10.25135/rfac.2.2107.2151 ◽

2021 ◽

Vol 1 (1-2) ◽

pp. 3-11

Author(s):

Tamer Üstuner ◽

Kamal Almhemed ◽

Muhammad Al Sakran ◽

Menderes Üstüner

Keyword(s):

Germination Rate ◽

Lolium Multiflorum ◽

Amaranthus Retroflexus ◽

Sorghum Halepense ◽

Allelopathic Effect ◽

Average Height ◽

Weed Species ◽

Tomato Seedlings ◽

Cuscuta Campestris ◽

Germination And Growth

The experiment was implemented by CRD design with three replications and lasted for 40 days, from 5 October until 15 November 2020. Four extract concentrations of D. graveolens 0, 2, 6, and 10% were used. The concentration of 0% was considered as control. The allelopathic effect has been studied on five weed species; Amaranthus retroflexus L., Portulaca oleracea L., Lolium multiflorum Lam., Sorghum halepense L., and Cuscuta campestris Yunck. The research also aimed to determine the effect of Stinkwort extract on the growth of tomato seedlings. All concentrations affected seed germination for all studied weeds. The concentration of 10% was more influential in growth-related indicators compared to other concentrations. The seeds of L. multiflorum and rhizomes of S. halepense were more tolerant to D. graveolens allelochemicals in germination rate than A. retroflexus, P. oleracea, and C. campestris. All concentrations led to a reduction in the weed heights and the wet and dry weights compared with the controls. The effect of the extract with various concentrations was catalytic for the growth of tomato seedlings, as the average height of tomato seedlings was in direct proportion to the concentration.

Download Full-text

Bacillus effect on the germination and growth of tomato seedlings (Solanum lycopersicum L).

Acta Biológica Colombiana ◽

10.15446/abc.v22n1.57375 ◽

2017 ◽

Vol 22 (1) ◽

pp. 37 ◽

Cited By ~ 2

Author(s):

Teresa Cabra Cendales ◽

Cristian Alonso Rodríguez González ◽

Claudia Patricia Villota Cuásquer ◽

Omar Alberto Tapasco Alzate ◽

Annia Hernández Rodríguez

Keyword(s):

Bacillus Subtilis ◽

Solanum Lycopersicum ◽

Bacillus Pumilus ◽

Ricinus Communis ◽

Tomato Seedlings ◽

Solanum Lycopersicum L ◽

Para Determinar ◽

Germination And Growth

La capacidad para solubilizar fosfatos y producir compuestos indólicos del tipo Ácido Indol Acético, se evaluó en 15 cepas aisladas de residuos lignocelulósicos de higuerilla (Ricinus communis). Para determinar la actividad solubilizadora de fosfatos se realizó una prueba cualitativa utilizando medio de cultivo Pikovskaya y para evaluar la producción de compuestos indólicos (AIA) se empleó la técnica colorimétrica de Salkowsky. Entre los microorganismos evaluados, Bacillus pumilus GIBI 206 mostró tener la capacidad para solubilizar fosfatos y Bacillus subtilis GIBI 200 evidenció capacidad para solubilizar fosfatos y producir Ácido Indolacético (AIA). Para determinar el efecto de la cepa Bacillus subtilis sobre la germinación y promoción de crecimiento, se inoculó en semillas de tomate (Solanum lycopersicum cultivar Santa Clara); la inoculación de las semillas con el microorganismono mostró diferencias estadísticamente significativas en el tiempo de germinación en comparación con el tratamiento control, sin embargo mostró influir positivamente en el desarrollo de las plantas de tomate generando un aumento significativo sobre la masa y longitud del tallo y de la raíz. Los resultados de esta investigación ofrecen la posibilidad de utilizar a Bacillus subtilis como promotora de crecimiento en plántulas de tomate y en la formulación de bioinsumos

Download Full-text

EFFECTS OF 24-EPIBRASSINOLIDE ON GERMINATION AND GROWTH OF TOMATO SEEDLINGS UNDER SALT STRESS

JOURNAL OF NEOTROPICAL AGRICULTURE ◽

10.32404/rean.v8i1.4842 ◽

2021 ◽

Vol 8 (1) ◽

pp. e4842

Author(s):

Sebastião De Oliveira Maia Júnior ◽

Jailma Ribeiro de Andrade ◽

Robson Felipe de Lima ◽

Rafaela Félix Basílio Guimarães ◽

Allesson Ramos de Souza ◽

...

Keyword(s):

Salt Stress ◽

Seed Germination ◽

Dry Matter ◽

Growth Traits ◽

Tomato Cultivar ◽

Tomato Seedlings ◽

Tomato Seeds ◽

Seedling Length ◽

Germination Speed ◽

Germination And Growth

Salinity is one of the environmental stresses that most affects plants' vital processes, especially germination. Brassinosteroids, including 24-epibrassinolide (EBL), have multiple actions in essential processes in plants. Thus, this research's objective was to evaluate the effects of EBL on tomato seeds' physiological conditioning on germination, growth, and production of dry seedling mass under salinity conditions. The experiment was carried out in a 2x5 factorial scheme, as follows: two concentrations of EBL (0 and 10-6 M) and five levels of salinity (0.5 control; 1.5; 3.0; 4.5 and 6.0 dS m-1), consisting of ten treatments, with four replications of 50 seeds. In isolation, the salt stress reduced the percentage of germination and germination speed index from four to 14 days, besides all the plants' growth traits. In turn, the EBL increased the percentage of germination, germination speed index, seedling length, and radicle dry matter. The application of 10-6 M of EBL in seed immersion no effect on the seed germination of IPA 6 tomato cultivar under salt stress but increases the root length and the dry matter of the seedlings.

Download Full-text