scholarly journals The regulation of growth parameters of potato microclones by jasmonic acid

2020 ◽  
Author(s):  
E. A. Mukhamatdinova ◽  
I. S. Kovtun ◽  
M. V. Efimova
Keyword(s):  
Plant Growth ◽  
Jasmonic Acid ◽  
Agar Medium ◽  
Growth Parameters ◽  
Dry Mass ◽  
Potato Plants ◽  
Murashige Skoog ◽  
First Time ◽  
Regulation Of Growth ◽  
Axial Organs

The microclones of potato (variety Lugovskoy) were grown on the modified Murashige-Skoog (MS) agar medium in the absence (control) or presence of JA at concentrations of 0.001, 0.1, and 10 µM. We evaluated plant growth parameters such as the length of the axial organs, the number of stolons, leaves, the area of the assimilating surface, and the wet and dry mass of aboveground and underground organs. For the first time, has been demonstrated, that jasmonic acid (0.1 and 10 µM) was showed a pronounced growth-stimulating effect on potato plants.

scholarly journals INFLUENCE OF BACILLUS SUBTILIS 26D ON GROWTH PARAMETERS AND IAA CONTENT IN POTATO PLANTS INFECTED WITH PHYTOPHTHORA INFESTANS

ÈKOBIOTEH ◽  
2021 ◽  
Vol 4 (2) ◽  
pp. 89-93
Author(s):  
A.V. Sorokan ◽  
◽  
S.V. Veselova ◽  
I.V. Maksimov ◽  
◽  
...  
Keyword(s):  
Late Blight ◽  
Phytophthora Infestans ◽  
Growth Parameters ◽  
Dry Mass ◽  
Plant Diseases ◽  
Negative Effects ◽  
Potato Plants ◽  
Endophytic Microorganisms ◽  
Regulation Of Growth

Plant diseases, including late blight caused by Phytophthora infestans, have long-term negative effects on plant growth and productivity. Auxins play an important role both in the regulation of growth processes and in the interaction of plants with pathogenic and endophytic microorganisms. It was shown that the presence of endophytic bacteria B. subtilis 26D in potato tissues promoted a rapid recovery of the growth rates of shoots, wet and dry mass of roots after P. infestans infection, and also reduced the area of late blight damaged zones on the leaves. At the same time, the effect of the pathogen led to an increase in the IAA content in the shoots, which was not observed in infected plants containing B. subtilis 26D endophytic cells.

scholarly journals Problems of Managing Potato Plant Growth Under Micropropagation for Primary Seeds

2021 ◽  
Author(s):  
Sergey Kornatskiy
Keyword(s):  
Plant Growth ◽  
Nutrient Medium ◽  
Potato Plant ◽  
Root Formation ◽  
Basal Part ◽  
Stem Length ◽  
Chlorocholine Chloride ◽  
Single Node ◽  
Potato Plants ◽  
Murashige Skoog

This study shows the possibility of controlling the growth of potato microplants when adding the Murashige-Skoog (MS) nutrient medium chlorocholine chloride (CCC) to the composition at a concentration of 0.05-0.25 mg ⋅ L −1. Varietal specificity of the reaction of potato plants to the preparation was revealed. At optimal concentrations of CCC, plants with a stem length of 7-10 cm in 250 ml flasks were grown from single-node microcuttings for 1.5 months. Microplants were removed from the flasks using 20 cm scissors and unsterilized tweezers. The roots were shortened to 2-3 mm and the basal part of the stems was treated with a chalk-based paste containing 0.04% indolylbutyric acid (IBA). Plants were planted on 36 mm diameter Jiffy 7 peat pellets directly in the laboratory. The trays with the material were transferred to the greenhouse at the end of April at a temperature of 20-25 °C and placed in the conditions of the upper fine irrigation. After 3-4 days, mass root formation began in the plants, and another week later the seedlings were ready for use. By then the height of the plants was 10-15 cm, and the roots were clearly visible on the surface of the peat pellets. Planting these seedlings in a technological greenhouse to obtain minitubers was convenient and inexpensive. Keywords: potato, microcuttings, microtubers, minitubers, chlorocholine chloride, peat pellets

scholarly journals Pilot Cultivation of the Vulnerable Cretan Endemic Verbascum arcturus L. (Scrophulariaceae): Effect of Fertilization on Growth and Quality Features

2021 ◽  
Vol 13 (24) ◽  
pp. 14030
Author(s):  
Konstantinos Paschalidis ◽  
Dimitrios Fanourakis ◽  
Georgios Tsaniklidis ◽  
Vasileios A. Tzanakakis ◽  
Fotis Bilias ◽  
...  
Keyword(s):  
Plant Growth ◽  
Nutrient Management ◽  
Foliar Application ◽  
Nutrient Content ◽  
Dry Mass ◽  
Total Phenolic ◽  
Antioxidant Compounds ◽  
Growth Physiology ◽  
Local Endemic ◽  
First Time

The domestication of wild-growing plants, including cultivation and fertilization protocols, is able to alleviate the ecological risks posed by the uncontrolled harvesting of range-restricted local endemic plants. In this field study focused on Verbascum arcturus, a vulnerable local endemic of Crete (Greece), the effect of two kinds of fertilization applied by two methods (foliar/root) was investigated. The foliar application included conventional or integrated nutrient management (INM) fertilization. Root application included the application of conventional fertilizers, biostimulants, or INM with biostimulants. Several properties of plant growth, physiology and nutrition were determined. The results showed that fertilization treatment affected neither leaf color and shape nor plant growth, morphology, dry mass partitioning or nutrient content. However, both kinds of foliar-applied fertilization enhanced Zn and B in leaves and soil-applied biostimulant increased leaf Ca. Considering both chlorophyll and antioxidant compounds’ content, foliar application of the INM fertilizers, as well as soil application of the conventional fertilizers or biostimulants, could be considered as accepted options. This study reports for the first time an assessment of the total phenolic and flavonoids content evidenced in V. arcturus and encourages the use of fertilization in promoting the herbal antioxidant profile without compromising visual quality or yield. The findings of this study could be considered as a documented contribution toward the sustainable exploitation of V. arcturus.

scholarly journals Physiological, Morphological, and Energy-use Efficiency Comparisons of LED and HPS Supplemental Lighting for Cucumber Transplant Production

HortScience ◽  
2015 ◽  
Vol 50 (3) ◽  
pp. 351-357 ◽  
Author(s):  
Ricardo Hernández ◽  
Chieri Kubota
Keyword(s):  
Plant Growth ◽  
Energy Use ◽  
Growth Parameters ◽  
Dry Mass ◽  
Photon Flux ◽  
Peak Wavelength ◽  
Hypocotyl Length ◽  
Blue Led ◽  
Red Led ◽  
Greenhouse Growers

To increase the available photosynthetic photon flux (PPF) for plant growth, greenhouse growers sometimes use electric lighting to supplement solar light. The conventional lighting technology used to increase PPF in the greenhouse is high-pressure sodium lamps (HPS). A potential alternative to HPS is high-intensity light-emitting diodes (LEDs). The objective of this study is to compare supplemental LED lighting with supplemental HPS lighting in terms of plant growth and morphology as well as discuss the energy use efficiencies of the fixtures. There were three light treatments: 1) blue LED (peak wavelength 443 nm); 2) red LED (peak wavelength 633 nm); and 3) HPS, to provide 3.7 ± 0.2 mol·m−2·d−1 (background solar radiation of 6.3 ± 0.9 mol·m−2·d−1). Cucumber (Cucumis sativus) plants at the transplanting stage (26 to 37 days) under HPS had 28% greater dry mass than did plants under the LED treatments. This can be attributed to the higher leaf temperature under the HPS treatment. No differences were observed in growth parameters (dry mass, fresh weight, or number of leaves) between the blue and red LED treatments. Plants under the blue LED treatment had greater net photosynthetic rate and stomatal conductance (gS) than those under the red LED and HPS treatments. Plants under the blue LED and HPS treatments had 46% and 61% greater hypocotyl length than those under the red LED, respectively. The fixture PPF efficiencies used in the experiment were 1.9, 1.7, and 1.64 μmol·J−1 for the blue LED, red LED, and HPS treatments, respectively; however, the fixture growing efficiency (g·kWh−1) of HPS was 6% and 17% greater than the blue LED and red LED treatment, respectively. In summary, supplemental red LED produced desirable plant compactness and HPS had greater fixture growing efficiency than LEDs.

scholarly journals Effect of agar concentration in culture medium on in vitro development of potato plants

2020 ◽  
Vol 9 (7) ◽  
pp. e542974571
Author(s):  
Cinthia Kutz de Matos ◽  
Camila Eduarda Loli Pereira ◽  
Leonardo Balena ◽  
Jackson Kawakami
Keyword(s):  
Culture Medium ◽  
Agar Medium ◽  
Dry Mass ◽  
Culture Technique ◽  
Potato Cultivars ◽  
Semisolid Medium ◽  
Potato Plants ◽  
Best Response ◽  
Vitro Development

In vitro propagation and tissue culture technique is an alternative for obtaining healthy potato seeds. However, data found in the literature differ on the optimal consistency of the culture medium to be used in vitro. The aim in this research was to look at the adaptation of potato cultivars to medium with different agar concentrations. The experimental design was entirely randomized in a factorial scheme. The experiment tested the effect of 3 agar medium concentrations (solid, semisolid and liquid) on 6 cultivars (Agata, Bel, Camila, Catucha, Clara and Eliza), with 5 repetitions. We quantified from the plantlets, fresh and dry mass of roots and shoot, the number of nodes, the multiplication capacity and vigor. The study showed that potato cultivars respond significantly to different concentrations of agar and their best response was in the semisolid medium.

scholarly journals Salinity stress and plant growth regulator in basil: effects on plant and soil

DYNA ◽  
2021 ◽  
Vol 88 (217) ◽  
pp. 75-83
Author(s):  
Leonardo Vieira de Sousa ◽  
Toshik Iarley da Silva ◽  
Maria de Fátima de Queiroz Lopes ◽  
Márcia Paloma da Silva Leal ◽  
Ana Gabriela Sousa Basilio ◽  
...  
Keyword(s):  
Plant Growth ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Growth Parameters ◽  
Saline Water ◽  
Block Design ◽  
Dry Mass ◽  
Shoot Height ◽  
Randomized Block Design ◽  
The Matrix

The water in semiarid regions contains salts in excess. When good quality water is not available it is necessary to use strategies that can make feasible the use of saline water. The aim of this study was to evaluate the effects of the application of the plant growth regulator on the culture of basil stressed with salt. The experiment was carried out in a randomized block design by the matrix “Central Box Compound”. Shoot height, stem diameter, leaf area, dry masses and soil chemical characteristics were evaluated. The salinity of the irrigation water causes reduction of the basil growth parameters, with the exception of the inflorescence dry mass. Plant growth regulator applications have effect on basil growth when plants are irrigated with saline water.

Effect of rhizobacteria strains on the induction of resistance in barley genotypes against Cochliobolus sativus

2020 ◽  
Vol 13 (2) ◽  
pp. 83-92 ◽  
Author(s):  
A. Adam
Keyword(s):  
Plant Growth ◽  
Pseudomonas Putida ◽  
Growth Parameters ◽  
Disease Incidence ◽  
Dry Weight ◽  
Cochliobolus Sativus ◽  
Resistance Level ◽  
Wet Weight ◽  
Number Of Leaves ◽  
Barley Genotypes

SummaryEnhancement of the resistance level in plants by rhizobacteria has been proven in several pathosystems. This study investigated the ability of four rhizobacteria strains (Pseudomonas putida BTP1 and Bacillus subtilis Bs2500, Bs2504 and Bs2508) to promote the growth in three barley genotypes and protect them against Cochliobolus sativus. Our results demonstrated that all tested rhizobacteria strains had a protective effect on barley genotypes Arabi Abiad, Banteng and WI2291. However, P. putida BTP1 and B. subtilis Bs2508 strains were the most effective as they reduced disease incidence by 53 and 38% (mean effect), respectively. On the other hand, there were significant differences among the rhizobacteria-treated genotypes on plant growth parameters, such as wet weight, dry weight, plant height and number of leaves. Pseudomonas putida BTP1 strain was the most effective as it significantly increased plant growth by 15-32%. In addition, the susceptible genotypes Arabi Abiad and WI2291 were the most responsive to rhizobacteria. This means that these genotypes have a high potential for increase of their resistance against the pathogen and enhancement of plant growth after the application of rhizobacteria. Consequently, barley seed treatment with the tested rhizobacteria could be considered as an effective biocontrol method against C. sativus.

Plastic Mulch Color Effects on Light Micro-environment and Watermelon Plant Growth

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 474d-474
Author(s):  
N.K. Damayanthi Ranwala ◽  
Dennis R. Decoteau
Keyword(s):  
Plant Growth ◽  
Light Transmission ◽  
Root Zone ◽  
Dry Mass ◽  
Plant Responses ◽  
Plastic Mulch ◽  
Plant Parts ◽  
Reflected Light ◽  
Total Light ◽  
Dry Mass Partitioning

This study was conducted to evaluate the spectral properties of various colored plastic color mulches and to determine the effects of upwardly reflected light from the mulch surfaces on watermelon plant growth when differences in root zone temperatures are minimized. Two-week-old watermelon plants were grown with black mulch, red-painted mulch, SRM-Red mulch (Sonoco, Inc., Harstville, S.C.), and white mulch. Total light reflection (58 μmol·m–2·s–1 in 400–700 nm) and red: far-red (R:FR = 0.44) of reflected light were lower in black mulch and highest in white mulch (634 and 0.92, respectively). Both black mulch and white mulch had same blue:red (B:R = 0.6) while white mulch had higher B:FR (0.58) in reflected light compared to black mulch (0.26). Reflective properties of red mulches were somewhat similar, and R:FR, B:R, and B:FR were 0.8, 0.2, and 0.18, respectively. However, SRM-Red mulch had highest total light (355 μmol·m–2·s–1 in 400–700 nm) transmission through the mulch, and R:FR, B:R, and B:FR were 0.84, 0.28, and 0.23, respectively. Light transmission through the other mulches was nonsignificant. Watermelon plants grown with black mulch and red mulches had higher internode lengths compared to white mulch after 20 days. Further, plants grown under black had significant higher petiole elongation accompanied with higher dry mass partitioning to petioles, and lower partitioning to roots, stems, and leaves. There was no effects of surface mulch color on total plant dry mass or photosynthesis although plants with black had higher transpiration rate. This suggests the differential regulation of dry mass partitioning among plant parts due to mulch color. The similar plant responses with black mulch and white mulch to plants treated with FR or R light at the end of photoperiod implies the involvement of phytochrome regulation of growth due to mulch surface color.

scholarly journals Electrochromic Performance and Capacitor Performance of α-MoO3 Nanorods Fabricated by a One-Step Procedure

Coatings ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 783
Author(s):  
Ying Duan ◽  
Chen Wang ◽  
Jian Hao ◽  
Yang Jiao ◽  
Yanchao Xu ◽  
...  
Keyword(s):  
Growth Parameters ◽  
Average Diameter ◽  
Fast Response ◽  
Cycle Stability ◽  
Electrochromic Devices ◽  
Step Procedure ◽  
One Step ◽  
Supercapacitor Performance ◽  
First Time ◽  
Prepared Nanorods

In this paper, we propose for the first time the synthesis of α-MoO3 nanorods in a one-step procedure at mild temperatures. By changing the growth parameters, the microstructure and controllable morphology of the resulting products can be customized. The average diameter of the as-prepared nanorods is about 200 nm. The electrochromic and capacitance properties of the synthesized products were studied. The results show that the electrochromic properties of α-MoO3 nanorods at 550 nm have 67% high transmission contrast, good cycle stability and fast response time. The MoO3 nanorods also exhibit a stable supercapacitor performance with 98.5% capacitance retention after 10,000 cycles. Although current density varies sequentially, the nanostructure always exhibits a stable capacitor to maintain 100%. These results indicate the as-prepared MoO3 nanorods may be good candidates for applications in electrochromic devices and supercapacitors.

scholarly journals Agro-Nanotechnology as an Emerging Field: A Novel Sustainable Approach for Improving Plant Growth by Reducing Biotic Stress

2021 ◽  
Vol 11 (5) ◽  
pp. 2282
Author(s):  
Masudulla Khan ◽  
Azhar U. Khan ◽  
Mohd Abul Hasan ◽  
Krishna Kumar Yadav ◽  
Marina M. C. Pinto ◽  
...  
Keyword(s):  
Plant Growth ◽  
Crop Yield ◽  
Biotic Stress ◽  
Crop Production ◽  
Plant Disease ◽  
Yield Loss ◽  
Growth Parameters ◽  
Plant Diseases ◽  
High Yield ◽  
Plant Disease Management

In the present era, the global need for food is increasing rapidly; nanomaterials are a useful tool for improving crop production and yield. The application of nanomaterials can improve plant growth parameters. Biotic stress is induced by many microbes in crops and causes disease and high yield loss. Every year, approximately 20–40% of crop yield is lost due to plant diseases caused by various pests and pathogens. Current plant disease or biotic stress management mainly relies on toxic fungicides and pesticides that are potentially harmful to the environment. Nanotechnology emerged as an alternative for the sustainable and eco-friendly management of biotic stress induced by pests and pathogens on crops. In this review article, we assess the role and impact of different nanoparticles in plant disease management, and this review explores the direction in which nanoparticles can be utilized for improving plant growth and crop yield.

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