scholarly journals INFLUENCE OF NANOCOMPOSITE COMPLEX BACTERIAL PREPARATION AZOHRAN ON BUCKWHEAT GROWTH, DEVELOPMENT AND YIELD

2019 ◽  
Vol 30 ◽  
pp. 32-38
Author(s):  
R. E. Grischenko ◽  
O. G. Lyubchych ◽  
O. V. Glieva ◽  
A. O. Roy ◽  
I. K. Kurdysh
Keyword(s):  
Plant Growth ◽  
Growth And Development ◽  
Leaf Surface ◽  
Azotobacter Vinelandii ◽  
Crop Productivity ◽  
Organic Production ◽  
Plant Growth And Development ◽  
Scientific Center ◽  
Bacterial Preparation ◽  
Flowering Phase

Objective. To determine the influence of complex nanocomposite bacterial preparation Azohran on plant growth and development and buckwheat productivity by simulation of organic production. Methods. Nanocomposite complex bacterial preparation Azohran was produced on the basis of interaction of strains Azotobacter vinelandii IMB B-7076 and Bacillus subtilis IMB B-7023 with bentonite nanoparticles. The study of the influence of the product on plant growth and development and the yield of buckwheat of Sin 3/02 variety under simulation of organic production was carried out on the experimental field of the National Scientific Center “Institute of Agriculture of the NAAS”. Results. It has been established that presowing bacterization of buckwheat seeds with nanocomposite complex bacterial preparation Azohran significantly stimulates plant growth and development. The use of this product was accompanied by an increase in the area of the leaf surface of the plants. In the control variant, the area of the leaf surface during the flowering phase was 11.6 thousand m2/ha, and under the use of Azohran this parameter increased to 14.9 thousand m2/ha, or by 28.5%. During the cultivation of buckwheat without bacterization, the area of assimilation surface from the flowering phase to maturation decreased 2.3–2.5 times, however, the use of presowing bacterization slowed the die-off of leaf blade — their area decreased only 1.7 times during the maturation period. The content of nitrogen, phosphorus and potassium compounds increased significantly in bacterized plants. The crop yield increased to 1.08 t/ha (by 22.7% compared to the control). The sowing of buckwheat seeds bacterized with Azohran in the soil against the background of straw plowing provided a yield increase of up to 1.3 t/ha (30%). Conclusion. Presowing bacterization of buckwheat seeds with the nanocomposite complex bacterial preparation Azohran significantly improves plant growth and development and increases crop productivity by 22.7-30%.

scholarly journals (412) Tomato Diseases

HortScience ◽  
2005 ◽  
Vol 40 (4) ◽  
pp. 1071A-1071
Author(s):  
Donald Krizek ◽  
Patricia Millner ◽  
Mary Camp ◽  
David Clark ◽  
Mark Davis ◽  
...  
Keyword(s):  
Plant Growth ◽  
Growth And Development ◽  
Chilling Injury ◽  
Late Summer ◽  
Primary Objective ◽  
Corn Earworm ◽  
Organic Production ◽  
Plant Growth And Development ◽  
Fresh Market ◽  
Stalk Rot

Afield study of organic production of tomato (Lycopersiconesculentum Mill.) in high-tunnels was conducted in 2004. `Mountain Fresh' was transplanted 31 Mar.; `Ultra Sweet' and `Sun Leaper' were transplanted on 21 July. The primary objective was to determine the feasibility of obtaining two crops of fresh-market tomatoes by starting plants 4–8 weeks earlier than the average last spring-killing frost, and extending the growing season 4–6 weeks past the average first fall-killing frost. Plants were started at weekly intervals for 4 weeks in both seasons. Data and observations were recorded on the yield of marketable fruits, plant growth and development, and plant health. Other objectives were to evaluate: 1) the benefits of using a selective UV-blocking film on plant growth and development, disease events; and 2) compost amendments on soil improvement and disease control. Major cultural challenges included water management, soil texture/drainage, prevention of chilling injury, plant support, and adequate ventilation. Major disease/pest challenges involved stalk rot caused by Sclerotinia sclerotiorum in the spring, powdery mildew in spring and late summer, Alternaria and Septoria leaf blight in late summer, and aphids, tomato hornworm, corn earworm, and beet army worm also in late summer. In addition, macrofaunal intrusions by fox, mice, and birds occurred sporadically. Poor drainage and stalk rot in the spring necessitated relocating the tunnels to an uninfested site with better drainage. The fall crop yielded high numbers of marketable quality fruits, well beyond the 15 Oct. average killing frost date. The results suggest that with improved management, there is a considerable potential for profitable extended-season production of organic tomatoes in this region.

Mechanisms of ethylene biosynthesis and response in plants

2015 ◽  
Vol 58 ◽  
pp. 61-70 ◽  
Author(s):  
Paul B. Larsen
Keyword(s):  
Plant Growth ◽  
Growth And Development ◽  
Ethylene Biosynthesis ◽  
Unsaturated Hydrocarbon ◽  
Flower Senescence ◽  
Detailed Knowledge ◽  
Plant Growth And Development ◽  
Step Process ◽  
Ethylene Response ◽  
Ethylene Signalling

Ethylene is the simplest unsaturated hydrocarbon, yet it has profound effects on plant growth and development, including many agriculturally important phenomena. Analysis of the mechanisms underlying ethylene biosynthesis and signalling have resulted in the elucidation of multistep mechanisms which at first glance appear simple, but in fact represent several levels of control to tightly regulate the level of production and response. Ethylene biosynthesis represents a two-step process that is regulated at both the transcriptional and post-translational levels, thus enabling plants to control the amount of ethylene produced with regard to promotion of responses such as climacteric flower senescence and fruit ripening. Ethylene production subsequently results in activation of the ethylene response, as ethylene accumulation will trigger the ethylene signalling pathway to activate ethylene-dependent transcription for promotion of the response and for resetting the pathway. A more detailed knowledge of the mechanisms underlying biosynthesis and the ethylene response will ultimately enable new approaches to be developed for control of the initiation and progression of ethylene-dependent developmental processes, many of which are of horticultural significance.

Response of Poinsettia Growth and Development to Ratio of Radiant to Thermal Energy

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 508e-508
Author(s):  
Bin Liu ◽  
Royal D. Heins
Keyword(s):  
Plant Growth ◽  
Thermal Energy ◽  
Growth And Development ◽  
Model Simulation ◽  
Interactive Effect ◽  
Dry Weight ◽  
Plant Spacing ◽  
Plant Growth And Development ◽  
Daily Light Integral ◽  
Highly Correlated

A concept of ratio of radiant to thermal energy (RRT) has been developed to deal with the interactive effect of light and temperature on plant growth and development. This study further confirms that RRT is a useful parameter for plant growth, development, and quality control. Based on greenhouse experiments conducted with 27 treatment combinations of temperature, light, and plant spacing, a model for poinsettia plant growth and development was constructed using the computer program STELLA II. Results from the model simulation with different levels of daily light integral, temperature, and plant spacing showed that the RRT significantly affects leaf unfolding rate when RRT is lower than 0.025 mol/degree-day per plant. Plant dry weight is highly correlated with RRT; it increases linearly as RRT increases.

scholarly journals Brassinolide Enhances the Level of Brassinosteroids, Protein, Pigments, and Monosaccharides in Wolffia arrhiza Treated with Brassinazole

Plants ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 1311
Author(s):  
Magdalena Chmur ◽  
Andrzej Bajguz
Keyword(s):  
Plant Growth ◽  
Growth And Development ◽  
Inhibitory Effect ◽  
Dependent Manner ◽  
Plant Growth And Development ◽  
Concentration Dependent Manner ◽  
Spectrophotometric Methods ◽  
Synthetic Inhibitor ◽  
Wolffia Arrhiza ◽  
First Time

Brassinolide (BL) represents brassinosteroids (BRs)—a group of phytohormones that are essential for plant growth and development. Brassinazole (Brz) is as a synthetic inhibitor of BRs’ biosynthesis. In the present study, the responses of Wolffia arrhiza to the treatment with BL, Brz, and the combination of BL with Brz were analyzed. The analysis of BRs and Brz was performed using LC-MS/MS. The photosynthetic pigments (chlorophylls, carotenes, and xanthophylls) levels were determined using HPLC, but protein and monosaccharides level using spectrophotometric methods. The obtained results indicated that BL and Brz influence W. arrhiza cultures in a concentration-dependent manner. The most stimulatory effects on the growth, level of BRs (BL, 24-epibrassinolide, 28-homobrassinolide, 28-norbrassinolide, catasterone, castasterone, 24-epicastasterone, typhasterol, and 6-deoxytyphasterol), and the content of pigments, protein, and monosaccharides, were observed in plants treated with 0.1 µM BL. Whereas the application of 1 µM and 10 µM Brz caused a significant decrease in duckweed weight and level of targeted compounds. Application of BL caused the mitigation of the Brz inhibitory effect and enhanced the BR level in duckweed treated with Brz. The level of BRs was reported for the first time in duckweed treated with BL and/or Brz.

scholarly journals Correction to: Non-specific phospholipase C (NPC): an emerging class of phospholipase C in plant growth and development

2021 ◽  
Author(s):  
Yuki Nakamura ◽  
Anh H. Ngo
Keyword(s):  
Open Access ◽  
Plant Growth ◽  
Phospholipase C ◽  
Growth And Development ◽  
Plant Growth And Development

The article Non-specific phospholipase C (NPC): an emerging class of phospholipase C in plant growth and development, was originally published Online First without Open Access.

Sign in / Sign up

Export Citation Format

Share Document