scholarly journals Role of Trichoderma aggressivum f. europaeum as Plant-Growth Promoter in Horticulture

Agronomy ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 1004 ◽  
Author(s):  
Brenda Sánchez-Montesinos ◽  
Fernando Diánez ◽  
Alejandro Moreno-Gavíra ◽  
Francisco J. Gea ◽  
Mila Santos
Keyword(s):  
Seed Germination ◽  
Seedling Growth ◽  
Added Value ◽  
Growth Promoter ◽  
Tomato Seed ◽  
Promoting Effect ◽  
Commercial Plant ◽  
Plant Nursery ◽  
Different Doses

The main objective of this study was to determine the capacity of Trichoderma aggressivum f. europaeum to promote pepper and tomato seedling growth compared to that of T. saturnisporum, a species recently characterised as a biostimulant. Consequently, in vitro seed germination and seedling growth tests were performed under commercial plant nursery conditions. Additionally, the effects of different doses and a mixture of both species on seedling growth under plant nursery and subsequently under greenhouse conditions were determined. Furthermore, mass production of spores was determined in different substrates, and their siderophore and indole acetic acid production and phosphate (P) solubilisation capacity were also determined. Direct application of Trichoderma aggressivum f. europaeum to seeds in vitro neither increases the percentage of pepper and tomato seed germination nor improves their vigour index. However, substrate irrigation using different doses under commercial plant nursery conditions increases the quality of tomato and pepper seedlings. Tomato roots increased by 66.66% at doses of 106 spores per plant. Applying T. aggressivum f. europaeum or T. saturnisporum under plant nursery conditions added value to seedlings because their growth-promoting effect is maintained under greenhouse conditions up to three months after transplantation. The combined application of the two species had no beneficial effect in relation to that of the control. The present study demonstrates the biostimulant capacity of T. aggressivum f. europaeum in pepper and tomato plants under commercial plant nursery and greenhouse conditions.

scholarly journals Zinc Oxide and Zinc Oxide Nanoparticles Impact on In Vitro Germination and Seedling Growth in Allium cepa L.

Materials ◽  
2020 ◽  
Vol 13 (12) ◽  
pp. 2784 ◽  
Author(s):  
Alicja Tymoszuk ◽  
Jacek Wojnarowicz
Keyword(s):  
Zinc Oxide ◽  
Seed Germination ◽  
Allium Cepa ◽  
Seedling Growth ◽  
Zinc Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Zno Nps ◽  
Allium Cepa L ◽  
Germinating Seeds

Zinc oxide nanoparticles (ZnO NPs) are ones of the most commonly manufactured nanomaterials worldwide. They can be used as a zinc fertilizer in agriculture to enhance yielding and to control the occurrence of diseases thanks to its broad antifungal and antibacterial action. The aim of this study was to investigate and compare the effects of ZnO submicron particles (ZnO SMPs) and ZnO NPs on the process of in vitro seed germination and seedling growth in onion (Allium cepa L. ‘Sochaczewska’), and to indicate the potential use of these compounds in onion production. In the experiment, disinfected seeds were inoculated on the modified Murashige and Skoog (MS) medium and poured with ZnO SMP or ZnO NP water suspension, at the concentrations of 50, 100, 200, 400, 800, 1600, and 3200 mg∙L−1. During three successive weeks, the germinating seeds were counted. Germination started most often on the second or third day of in vitro culture. The highest share of germination was recorded for seeds treated with 800 mg∙L−1 ZnO SMPs and ZnO NPs (52% and 56%, respectively). After the application of ZnO SMPs and ZnO NPs at the highest tested concentration (3200 mg∙L−1), the share of germinating seeds was only 19% and 11%, respectively. Interestingly, seedlings obtained from control seeds and seeds treated with ZnO SMPs and ZnO NPs did not differ statistically in terms of length, fresh weight, and dry weight of leaves, and roots. Both ZnO SMPs and ZnO NPs, in the concentration range from 50 to 1600 mg∙L−1, can be used to stimulate the germination process of onion seeds, without negative effects on the further growth and development of seedlings. There were no differences found between the action of ZnO NPs and ZnO SMPs, which suggested that the most important factor influencing seed germination was in fact the concentration of zinc ions, not the particle size.

Inhibitory effect of aqueous extracts of Centaurea solstitialis subsp. schouwii on seed germination and growth of Sulla coronaria

Botany ◽  
2020 ◽  
Vol 98 (5) ◽  
pp. 273-281
Author(s):  
Chadlia Hachani ◽  
Mohammed S. Lamhamedi ◽  
Mejda Abassi ◽  
Zoubeir Béjaoui
Keyword(s):  
Seed Germination ◽  
Seedling Growth ◽  
Inhibitory Effect ◽  
Centaurea Solstitialis ◽  
Aqueous Extracts ◽  
Linear Relationships ◽  
Allelopathic Effects ◽  
Anthropogenic Threats ◽  
Sulla Coronaria

Biodiversity has been confronted with anthropogenic threats and several natural threats such as biological invasions. The success of these invasions involves phytotoxic products released by invasive plants that can exhibit allelopathic effects on target species. Thus, aqueous extracts from different parts of the Mediterranean yellow star-thistle [Centaurea solstitialis subsp. schouwii (DC.) Gugler], were tested for their allelopathic effects on seed germination and seedling growth of Sulla coronaria (L.). Bioassays were conducted in vitro to test the effects of the aqueous extracts of shoot, basal and root parts of C. solstitialis subsp. schouwii at two different concentrations (50 g·L−1 and 10 g·L−1). The concentrations of total polyphenols, flavonoids, and tannins of the extracts were also evaluated. Our results showed inhibitory effects on the germination and seedling growth of S. coronaria seedlings, particularly with the extract form the basal part, reaching 84%. This study confirms the linear relationships between the allelopathic effects of C. solstitialis subsp. schouwii and the polyphenol and flavonoid contents. However, further experiments are needed under field conditions to confirm the results obtained under laboratory conditions.

The effect of gamma radiation on seed germination and seedling growth of Lathyrus chrysanthus Boiss. under in vitro conditions

2016 ◽  
Vol 162-163 ◽  
pp. 129-133 ◽  
Author(s):  
Ramazan Beyaz ◽  
Cansu Telci Kahramanogullari ◽  
Cigdem Yildiz ◽  
E. Selcen Darcin ◽  
Mustafa Yildiz
Keyword(s):  
Seed Germination ◽  
Gamma Radiation ◽  
Seedling Growth

scholarly journals Enhanced Seed Germination and Seedling Growth of Tillandsia Eizii In Vitro

HortScience ◽  
2003 ◽  
Vol 38 (1) ◽  
pp. 101-104 ◽  
Author(s):  
Kimberly A. Pickens ◽  
James M. Affolter ◽  
Hazel Y. Wetzstein ◽  
Jan H.D. Wolf
Keyword(s):  
Seed Germination ◽  
In Vitro Culture ◽  
Seedling Growth ◽  
Culture Medium ◽  
Habitat Destruction ◽  
Light Conditions ◽  
Physiological Constraints ◽  
Large Numbers ◽  
In The Wild

Tillandsia eizii is an epiphytic bromeliad that due to over-collection, habitat destruction, and physiological constraints has declined to near threatened status. This species exhibits high mortality in the wild, and seed are characterized by low percentages of germination. As a means to conserve this species, in vitro culture protocols were developed to enhance seed germination and seedling growth. A sterilization protocol using 70% ethanol for 2 minutes followed by 2.6% NaOCl for 40 minutes disinfested seed and promoted seedling growth. Sucrose incorporated into the culture medium had no effect on germination or growth, while NAA inhibited growth, but not germination. Cultures maintained under a 16-hour photoperiod at 22 °C exhibited greater growth than those grown at 30 °C. Seed that germinated in the dark remained etiolated and failed to develop even after transfer to light conditions. Plants grown in vitro were successfully acclimatized and transferred to the greenhouse. Over 86% survival and rapid growth were obtained with either an all-pine-bark medium, or a mixture of 2 redwood bark: 2 fir bark: 2 potting mix: 1 perlite. This demonstrated that in vitro culture of seed may be used to rapidly produce large numbers of T. eizii, and thus can be used for the conservation and reintroduction of this species.

scholarly journals Effects of a growth promoter on bean (Phaseolus vulgaris L.) crops in Sancti Spíritus province, Cuba

2017 ◽  
Vol 66 (3) ◽  
pp. 360-366 ◽  
Author(s):  
Kolima Peña Calzada ◽  
Juan Carlos Rodríguez Fernández ◽  
Martín Santana Sotolongo ◽  
Dilier Olivera Viciedo ◽  
Cesar Danilo Valle Expósito ◽  
...  
Keyword(s):  
Phaseolus Vulgaris ◽  
Seed Germination ◽  
Seedling Growth ◽  
Field Experiments ◽  
Seed Quality ◽  
Latin Square ◽  
Growth Promoter ◽  
Phaseolus Vulgaris L ◽  
Controlled Conditions ◽  
Randomized Design

In order to evaluate the effect of a growth promoter on the productivity performance and seed-quality in bean (Phaseolus vulgaris L.) crops, two experiments were carried out, one in the field and under controlled conditions. In the field experiments, a Latin square design was used for four treatments as follows: control, 0.5, 0.8 and 1.0 l.ha-1, respectively, where yield components were evaluated. The seeds used in the controlled conditions experiment were from prior trials, in a totally randomized design, at the dosages above mentioned. Seed germination and seedling growth were evaluated. In the field experiments, the product had a stimulating effect on the production. The highest yields were reached with the 0.8 and 1.0 l.ha-1 dosages in number 1, with values of 3.09 and 3.02 t.ha-1, and in number 2, the treatment with the best results was 1.0 l.ha-1, with a yield of 2.07 t.ha-1. In germination, there were significant differences among variables only in the first assessment at three days after planting. The best performance in seedling growth and in dry matter production was the treatment with seeds from the 0.5 l.ha-1 dosage in experiment 1. In addition, in number 2, performance among variables was similar. Therefore, VIUSID agro improved the bean yield performance and did not affect later seed germination nor initial seedling growth.

scholarly journals How Carbon Source and Seedcoat Influence the In Vitro Culture of Peach (Prunus persica L. Batsch) Immature Seeds

HortScience ◽  
2021 ◽  
pp. 1-2
Author(s):  
Margarita Pérez-Jiménez ◽  
Alfonso Guevara-Gázquez ◽  
Antonio Carrillo-Navarro ◽  
José Cos-Terrer
Keyword(s):  
Seed Germination ◽  
Carbon Source ◽  
In Vitro Culture ◽  
Seedling Growth ◽  
Woody Plant ◽  
Prunus Persica ◽  
In Vitro Germination ◽  
Immature Seeds ◽  
Woody Plant Medium

The effects of carbon source and concentration and of seedcoat were tested on the in vitro germination of peach seeds derived from crosses performed in the field. Seeds were extracted from the fruit and cultured in Woody Plant Medium (WPM) supplemented with sucrose, glucose, or sorbitol at concentrations of 15, 30, and 45 g·L−1. The percentage of germination as well as the root and hypocotyl lengths were measured after the stratification process and before acclimatization. Seedcoat did not have any influence on seed germination in any tested media and genotype. Glucose at a concentration of 15 g·L−1 and sucrose at 15, 30, and 45 g·L−1 resulted in greater stem seedling growth. The root developed the most when seeds were cultured in media with 15 or 30 g·L−1 of sucrose.

Seed Priming with Pyroligneous Acid Mitigates Aluminum Stress, and Promotes Tomato Seed Germination and Seedling Growth

2021 ◽  
Author(s):  
Raphael Ofoe ◽  
Lokanadha Rao Gunupuru ◽  
Bourlaye Fofana ◽  
Gefu Wang-Pruski ◽  
Raymond H. Thomas ◽  
...  
Keyword(s):  
Seed Germination ◽  
Seedling Growth ◽  
Seed Priming ◽  
Aluminum Stress ◽  
Tomato Seed ◽  
Pyroligneous Acid
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