Self-assembly of 1-triacontanol onto Layered Doubled Hydroxide Nano-carrier toward Sustainable Growth Regulation of Maize

2022 ◽  
Author(s):  
Chong Wang ◽  
Fei Gao ◽  
Changjiao Sun ◽  
Yue Shen ◽  
Shenshan Zhan ◽  
...  
Keyword(s):  
Seed Germination ◽  
Plant Growth ◽  
Root Growth ◽  
Growth Regulator ◽  
Self Assembly ◽  
Plant Growth Regulator ◽  
Growth Regulation ◽  
Physiological Effect ◽  
Sustainable Growth ◽  
Considerable Research

1-triacontanol has attracted considerable research interest in plant growth regulator field, owing to its physiological effect in seed germination, root growth and photosynthesis enhancement. In this work, a 1-triacontanol modified...

scholarly journals Encapsulation of Synthesized Plant Growth Regulator Based on Copper(II) Complex in Chitosan/Alginate Microcapsules

2021 ◽  
Vol 22 (5) ◽  
pp. 2663
Author(s):  
Darikha Kudasova ◽  
Botagoz Mutaliyeva ◽  
Kristina Vlahoviček-Kahlina ◽  
Slaven Jurić ◽  
Marijan Marijan ◽  
...  
Keyword(s):  
Plant Growth ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Electrostatic Interactions ◽  
Growth Regulation ◽  
Profile Analysis ◽  
Fickian Diffusion ◽  
Controlling Mechanism ◽  
High Concentrations ◽  
Reduced Surface

A new copper complex, trans-diaqua-trans-bis [1-hydroxy-1,2-di (methoxycarbonyl) ethenato] copper (abbreviation Cu(II) complex), was synthesized and its plant growth regulation properties were investigated. The results show a sharp dependence of growth regulation activity of the Cu(II) complex on the type of culture and its concentration. New plant growth regulator accelerated the development of the corn root system (the increase in both length and weight) but showed a smaller effect on the development of the wheat and barley root systems. Stimulation of corn growth decreased with increasing Cu(II) complex concentration from 0.0001% to 0.01% (inhibition at high concentrations—0.01%). The development of corn stems was also accelerated but to a lesser extent. Chitosan-coated calcium alginate microcapsules suitable for delivery of Cu(II) complex to plants were prepared and characterized. Analysis of the FTIR spectrum showed that complex molecular interactions between functional groups of microcapsule constituents include mainly electrostatic interactions and hydrogen bonds. Microcapsules surface exhibits a soft granular surface structure with substructures consisting of abundant smaller particles with reduced surface roughness. Release profile analysis showed Fickian diffusion is the rate-controlling mechanism of Cu(II) complex releasing. The obtained results give new insights into the complexity of the interaction between the Cu(II) complex and microcapsule formulation constituents, which can be of great help in accelerating product development for the application in agriculture

scholarly journals Technological factors for the application of the Medax Top plant growth regulator in seed crops of Bromus inermis under conditions of the right-bank Forest-Steppe of

2019 ◽  
pp. 8-15 ◽  
Author(s):  
S. I. Kolisnyk ◽  
S. F. Antoniv ◽  
A. A. Zapruta ◽  
V. V. Konovalchuk
Keyword(s):  
Seed Germination ◽  
Plant Growth ◽  
Seed Yield ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Stem Elongation ◽  
Bromus Inermis ◽  
Forest Steppe ◽  
Seed Productivity ◽  
Seed Crops

Purpose. To develop the element for regulating the formation of seed yield and the seeding properties of Bromus inermis through the application of Medax Top growth regulator from the time of tillering to the stem elongation of seed crops. To establish its effect on the growth of plants, their height, productive density, the number and mass of grains in inflorescences, the power of growth and seed germination. Methods. Field, visual, measuring, weight, quantitative, test sheaf method, laboratory, mathematical and statistical. Results. The results of scientific research aimed at creating favorable conditions for the formation of seed productivity of Bromus inermis and its seeding properties through the application of Medax Top plant growth regulator in the sixth-eighth period of organogenesis, i.e. from the beginning of tillering to the stem elongation of seed crops are presented. Its effect on increasing plant resistance to lodging, reducing plant height, increasing productive shoot formation, the number and mass of grains in inflorescence, improving seeding properties, in particular, the power of growth and seed germination, which contributed to the formation of seed yield of 343—354 kg/ha or 47—58 kg/ha more compared to the control without application of the plant growth regulator. Conclusions. Application of Medax Top plant growth regulator at the rate of 0.5—1.0 l/ha in the seed crops of Bromus inermis of Vseslav cultivar during the growing season is effective from the beginning of tillering to the stem formation, it contributes to an increase in its seed productivity by 5.0—21.2 % and provides conditional net profit of 5,179—5,288 UAH/ha.

scholarly journals Growth Regulation and Tank Mixing Associated with a Glyphosate-tolerant Perennial Ryegrass Cultivar

2015 ◽  
Vol 25 (2) ◽  
pp. 214-220
Author(s):  
Christian M. Baldwin ◽  
A. Douglas Brede ◽  
Jami J. Mayer
Keyword(s):  
Plant Growth ◽  
Perennial Ryegrass ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Growth Regulation ◽  
Management Strategies ◽  
Additional Benefit ◽  
Minimal Effect ◽  
Annual Bluegrass ◽  
N Sources

With the emergence of glyphosate-tolerant cultivars, identifying management strategies not applicable with older cultivars need to be revisited. Objectives of these research trials were to quantify the growth regulation effects following a glyphosate application and to determine the safety of tank mixing glyphosate with another herbicide, various nitrogen (N) sources, and a plant growth regulator (PGR) on a glyphosate-tolerant perennial ryegrass [PRG (Lolium perenne L.)] cultivar, Replay. In the growth regulation trial, glyphosate was applied at 0 to 1.03 lb/acre, whereas PGRs flurpimidol, trinexapac-ethyl, paclobutrazol, and trinexapac-ethyl + flurpimidol were applied at 0.50, 0.18, 0.37, and 0.09 + 0.22 lb/acre, respectively, on 15 July 2010 and 2 Aug. 2012. In the tank mixing trial, dicamba (0.50 lb/acre), urea (15 lb/acre N), and ammonium sulfate [AMS (15 lb/acre N)] were applied alone or tank mixed with glyphosate at 0 to 0.52 lb/acre. Tank mixing urea with glyphosate had minimal effect on PRG color, while adding AMS consistently improved color at the highest glyphosate rate of 0.52 lb/acre. Twenty days following a glyphosate application, only rates >0.40 lb/acre resulted in significant growth regulation compared with untreated plots. This study indicates that tank mixing glyphosate with another herbicide, a PGR, and various N sources appear safe to the glyphosate-tolerant PRG cultivar. Also, the growth regulating effects of glyphosate applications would serve as an additional benefit to annual bluegrass (Poa annua L.) control reported in previous trials.

scholarly journals Perkecambahan benih dan pertumbuhan bibit jarak pagar (Jatropha curcas Linn.) dengan invigorasi menggunakan zat pengatur tumbuh pada periode simpan yang berbeda

2018 ◽  
Vol 2 (2) ◽  
pp. 148
Author(s):  
Indah Puspitaningtyas ◽  
Syaiful Anwar ◽  
Karno Karno
Keyword(s):  
Growth Rate ◽  
Seed Germination ◽  
Plant Growth ◽  
Growth Regulator ◽  
Jatropha Curcas ◽  
Plant Growth Regulator ◽  
Seed Storage ◽  
Vigor Index ◽  
Seed Germination Vigor ◽  
Germination Vigor

Jatropha curcas is a plant that is used as an alternative energy for fossil fuel replacement because of it’s high oil content. Jatropha curcas seeds have 30-40% oil content. The purpose of the study was to improve the seed quality and to enhance seedling growth of Jatropha curcas after storage using plant growth regulator. This study used factorial design based on Completely Randomized Design with two factors and 3 replications. The first factor was seed storage which consist of 2 levels : A1 = seed storage in 2015, A2 = seed storage in 2016. The second factor was plant growth regulator level which consists of 6 levels : B1=GA+NAA 0 ppm, B2= GA+NAA 20 ppm, B3= GA+ NAA 40 ppm, B4= GA+NAA 60 ppm, B5 = GA+NAA 80 PPM, B6 = GA+NAA 100 ppm. Parameters measured were seed germination, vigor index, growth rate, plant height and the number of leaves. The data were analyzed statistically by analysis of variance and followed by Tukey test and Polynomial Orthogonal. The result showed that seed germination, vigor index and growth rate were significantly affected by storage treatment and invigoration using plant growth regulator treatment. Invigoration using auxin and gibberellic acid 40 ppm has the highest result of seed germination, vigor index and growth rate. There was no influence of seed storage and invigoration with plant growth regulator treatment on plant height and number of leaves. Keywords : Jatropha curcas, invigoration, plant growth regulator.

scholarly journals Dark-stored Flurprimidol Solutions Maintain Efficacy Over Many Weeks

HortScience ◽  
2013 ◽  
Vol 48 (1) ◽  
pp. 77-81 ◽  
Author(s):  
William B. Miller
Keyword(s):  
Plant Growth ◽  
Time Scales ◽  
Growth Regulator ◽  
Active Ingredient ◽  
Plant Growth Regulator ◽  
Growth Regulation ◽  
Growth Reduction ◽  
Height Control ◽  
Plant Plant

For a number of geophytic crops, pre-plant plant growth regulator (PGR) dips or soaks are an effective method of height control. Previous research has shown that a given PGR solution may be used to dip numerous bulbs without losing efficacy. What has been unknown is whether PGR solutions maintain efficacy over multiple-week (seasonal) time scales, especially if they have previously been used to treat bulbs. To address this question, 30 mg·L−1 flurprimidol solutions were prepared 3 weeks apart and used to dip narcissus and hyacinth bulbs and then held for 4 weeks at 17 °C in darkness. These solutions (now 7 and 4 weeks old) and a freshly prepared solution were used to dip bulbs of eight hyacinth and five narcissus cultivars. After appropriate cooling, bulbs were forced in a greenhouse. Results indicate no difference in growth reduction among the 0-, 4-, or 7-week-old solutions demonstrating no loss of PGR activity over a 7-week period. In two other experiments, 2.5, 5, and 10 mg·L−1 flurprimidol solutions were exposed to 0 to 8 days of full sun (late June) and then used to dip Lilium ‘Tresor’ bulbs for 1 minute. Growth of the plants indicated loss of growth regulation activity (taller plants) as the duration of exposure to sunlight increased, suggesting substantial photolysis of the active ingredient. Together, the results suggest that flurprimidol solutions can be held in darkness at 17 °C and used for at least 7 weeks without loss of efficacy.

Plant Growth Regulator Activity of Optical Isomers of DMPA

Weed Science ◽  
1969 ◽  
Vol 17 (2) ◽  
pp. 187-188 ◽  
Author(s):  
T. W. Holmsen
Keyword(s):  
Plant Growth ◽  
Root Growth ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Optical Isomers ◽  
Triticum Vulgare ◽  
Low Levels ◽  
Grass Growth

The herbicideO-(2,4-dichlorophenyl)O-methyl isopropylphosphoramidothioate (DMPA) contains an asymmetric tetracovalent phosphorus. Thed-isomer is much less active and thel-isomer more active thandl-DMPA in inhibiting seedling grass growth. Furthermore, low levels ofdl-DMPA stimulate root growth of seedling wheat (Triticum vulgareL., var. Soft winter).

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