ПОРІВНЯЛЬНИЙ ВПЛИВ РЕГУЛЯТОРІВ РОСТУ АЗОТОФІТ, ЯНТАРНА КИСЛОТА ТА ВИМПЕЛ НА ДИНАМІКУ ПРОЦЕСІВ РОСТУ ТА ПРОДУКТИВНІСТЬ ОЗИМОЇ ПШЕНИЦІ СОРТУ ЮВІВАТА

Scientific research suggests that winter wheat cultivation technologies can be regulated by plant growth regulators. These substances have a complex effect on growth and development and facilitate plant growth and crop capacity. Three-year field studies were carried out using plant growth regulators of Azotophyte, Amber acid and Vympel to determine the dynamics of plant growth rates and their productivity. This made it possible to observe the influence of growth regulators before sewing and to establish their effectiveness at all stages of plant development. Seeds of winter wheat of the variety Jubiwata were treated with solutions of the substances under analysis. The experimental area was 40 m². The study demonstrated that the growth regulators do not influence the field germination rate of plants, but the percentage of germination was quite high in both control and experimental variants. As for the rates of plant height and root length, the first measurement of the average height of winter wheat plants in autumn demonstrated that Vympel was the most efficient. Its indicators exceeded the control variant by 3.4%. After the second measurement, the plant height increased in all variants. The fourth spring measurement showed that the most powerful was the effect by Amber acid. This compound significantly inhibited plant growth compared to other growth regulators and controls. The investigated plant growth regulators have a positive influence on the processes of root development of winter wheat plants in both autumn and spring time. This feature will provide a better nutrition of the plants. The weight of the dry matter after the first weighing was greater in the control and the variant treated with Nitrogen. The fourth weighing showed that the best effect on the dry matter mass was found by Azotophyte, which contributed to the increase of this indicator twice as much compared to the control. Amber acid, when used for pre-sowing seed treatment, exceeded the control value by 1.8 times. Stronger effect on the percentage of dry matter in the plant sample was found only by Vympel, under the influence of which this indicator was greater by 9 units compared to the control. The use of synthetic growth regulators significantly increases the productivity of winter wheat, namely the length of the complex ear, the number of grains and the weight of the compound ear. Thus, research has shown that plant growth regulators Azotophit, Amber acid and Vympel facilitate the growth and productivity of winter wheat plants of the Juvivat variety. Winter wheat crops can be treated with these substances before sowing. Determining the highest efficiency of each individual regulator, as well as the possibility of combining them to improve plant growth processes, requires further research.

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Modern Chromatographic Methods for the Identification and Quantification of Plant Growth Regulators and Their Application to Studies of the Changes in Hormonal Substances in Winter Wheat During Acclimation to Cold Stress Conditions

Plant Regulation and World Agriculture ◽

10.1007/978-1-4684-3512-2_19 ◽

1979 ◽

pp. 327-377 ◽

Cited By ~ 11

Author(s):

Frank Wightman

Keyword(s):

Plant Growth ◽

Winter Wheat ◽

Cold Stress ◽

Plant Growth Regulators ◽

Growth Regulators ◽

Stress Conditions ◽

Chromatographic Methods ◽

Identification And Quantification

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Plant growth regulators in the germination of Diospyros hispida A. DC. (EBENACEAE) seeds

Research Society and Development ◽

10.33448/rsd-v10i2.12471 ◽

2021 ◽

Vol 10 (2) ◽

pp. e27110212471

Author(s):

Aline Bueno Ramalho ◽

Lúcia Filgueiras Braga

Keyword(s):

Plant Growth ◽

Gibberellic Acid ◽

Plant Growth Regulators ◽

Growth Regulators ◽

Germination Rate ◽

Dry Mass ◽

Shoot Length ◽

Distilled Water ◽

Seedling Production ◽

Mean Germination Time

Plant growth regulators in the germination of Diospyros hispida A. DC. (Ebenaceae) Seed. Diospyros hispida species is a native fruit that has long germination period, hindering seedling production. The aim of this work was to evaluate the germination of Diospyros hispida seeds under the effect of gibberellic acid and biostimulant applications. Four replicates of 25 seeds per treatment were used. Treatments were: T1 - distilled water, T2, T3 and T4 - GA3 solutions at 100, 150 and 200 mg L-1, respectively, T5 - Immersion for 24 hours in distilled water with aeration, T6, T7 and T8 - Immersion for 24 hours in aerated GA3 solutions at 100, 150 and 200 mg L-1, respectively, T9, T10 and T11 - biostimulant application (containing auxin, gibberellin and cytokinin) at 3, 5 and 7 ml kg-1 of seeds. Germination rate, mean germination time, germination speed index, synchronization index, relative germination frequency, normal seedlings, root length, shoot length and seedling dry mass were evaluated. The effect of gibberellic acid and biostimulant containing auxin, gibberellin and cytokinin negatively influenced Diospyros hispida germination under the conditions of this study.

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Pengaruh Naungan dan Zat Pengatur Tumbuh terhadap Pertumbuhan dan Hasil Tanaman Kentang Kultivar Atlantik di Dataran Medium

Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) ◽

10.24831/jai.v44i1.12489 ◽

2016 ◽

Vol 44 (1) ◽

pp. 33 ◽

Cited By ~ 2

Author(s):

Jajang Sauman Hamdani ◽

Sumadi , ◽

Yayat Rochayat Suriadinata ◽

Lourenco Martins

Keyword(s):

Plant Growth ◽

Plant Height ◽

Plant Growth Regulators ◽

Growth Regulators ◽

Choline Chloride ◽

Potato Cultivar ◽

Growth And Yield ◽

Tuber Weight ◽

Corn Plant ◽

Area Index

ABSTRACT<br /><br />Use of shade on the cultivation of potato in medium altitude is expected to reduce both light intensity and temperature, and therefore is more suitable for potatoes to grow in medium altitude. While the use of growth regulators subtances improving the process of assimilate distribution from the leaves to the tuber. Therefore use of shade followed by plant growth regulators applications are expected to increase of growth and yield. The objectives of the experiment were to determine growth and yield of potato cultivar Atlantik grown at medium altitude with different types of shading and plant growth regulators. The experiment was conducted at an experimental station of the Faculty of Agriculture, Padjadjaran University, Jatinangor, Sumedang, at an altitude 685 m asl. The experiment was arranged in a split plot design consisting of two factors and three replications. The main plots were types of shading (without shading, paranet 45%, UV polyethylene, and corn plant) and the sub plots were combination of plant growth regulators (benzylaminopurine + paclobutrazol), (benzylaminopurine +chloro choline chloride), benzylaminopurine, paclobutrazol, chloro choline chloride). The results showed that the effect of interaction between shading and plant growth regulator on growth and yield of the potato were not significant. Paranet shade and corn plant shade increased plant height, leaf area index, tuber weight per plant, yield per hectar and tuber grade A of potato cultivar Atlantik. Corn plant shading gave potato yield 21.6 ton ha-1 with 64% grade A tuber. Paclobutrazol decreased potato plant height, but increased number of tuber per plant and yielded highest tuber weight of 702.1 per plant (23.3 ton ha-1 ), with 70.9% grade A tuber. <br /><br />Keywords: Benzylaminopurine, microclimate, paclobutrazol, temperature

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Improvement of Seed Germination in Three Medicinal Plant Species by Plant Growth Regulators

HortScience ◽

10.21273/hortsci.51.7.887 ◽

2016 ◽

Vol 51 (7) ◽

pp. 887-891 ◽

Cited By ~ 3

Author(s):

Khalid M. Elhindi ◽

Yaser Hassan Dewir ◽

Abdul-Wasea Asrar ◽

Eslam Abdel-Salam ◽

Ahmed Sharaf El-Din ◽

...

Keyword(s):

Acetic Acid ◽

Seed Germination ◽

Plant Growth ◽

Plant Growth Regulators ◽

Growth Regulators ◽

Germination Rate ◽

Germination Percentage ◽

Mentha Piperita ◽

Naphthalene Acetic Acid ◽

Sweet Basil

Peppermint (Mentha piperita), sweet basil (Ocimum basilicum), and coriander (Coriandrum sativum) are important medicinal plants in the pharmacological industry. These plants are produced in commercial scale but their seeds exhibit low germination percentages under favorable germination conditions. Enhancing seed germination is thus crucial for improving the production of these plants. The influence of gibberellic acid (GA3), indole-3-acetic acid (IAA), indol-3-butyric acid (IBA), and naphthalene acetic acid (NAA) on seed germination of the three plants were investigated. The seeds were soaked in each plant growth regulator at 50, 100, and 150 mg·L−1 for 24 hours at 25 ± 2 °C. Seed germination was checked daily for 20 days and germination parameters including final germination percentage (FGP), corrected germination rate (CGRI), and number of days lapsed to reach 50% of FGP (GT50) were recorded. The phosphorus and protein contents were determined in germinated seedlings on day 21 of culture. All plant growth regulators enhanced seed germination as compared with control. However, GA3 improved seed germination more than IAA, IBA, and NAA. GA3 at 100 mg·L−1 significantly increased the FGP from 22.3% and 33.3% (control) to 74% and 65.6% for peppermint and sweet basil, respectively. Low concentration of GA3 at 50 mg·L−1 increased the FGP for coriander from 27% to 52.3%. GA3 also increased CGRI, GT50, phosphorus, and protein contents in germinated seedlings as compared with control. Seeds of peppermint, sweet basil, and coriander possess a physiological dormancy that could be elevated by GA3 presowing treatment. This study established a successful methodology for optimizing seed germination to satisfy the demand for the medicinal parts of these plants in the pharmacological industry.

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Susceptibility in the Growth of Viola tricolor `Blue' to Plant Growth Regulators and Fish Emulsion

HortScience ◽

10.21273/hortsci.30.4.852d ◽

1995 ◽

Vol 30 (4) ◽

pp. 852D-852

Author(s):

Sabrina L. Shaw ◽

William F. Hayslett ◽

Eddie B. Williams

Keyword(s):

Plant Growth ◽

Plant Height ◽

Plant Growth Regulators ◽

Growth Regulators ◽

Dry Weight ◽

Fresh Weight ◽

Visual Appearance ◽

Top Dry Weight ◽

Viola Tricolor

A one-time application of fish emulsion 2 days before the application of plant growth regulators (PGR) showed an overriding effect on the growth of pansies. Blue/blotch shades of `Medallion' pansies were placed on a constant feed program of 100 ppm Peat Lite 20N–10P–20K, with half of the pansies receiving an additional one-time supplement of fish emulsion. PGRs and rates included B-Nine, 0.5% (used as the control); uniconazole, 2 and 4 ppm; and paclobutrazol, 16 and 25 ppm. Parameters taken included plant height, top fresh weight, top dry weight, days to anthesis, and visual appearance. Significant differences were noted in the plants receiving the supplement for plant dry weight, plant height, and visual appearance. Plants receiving fish emulsion grew taller and denser than those on constant feed alone despite the effects of the PGRs.

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Effects of Pinching, Number of Cuttings per Pot, and Plant Growth Regulators on Height Control of Purple Firespike

HortTechnology ◽

10.21273/horttech.25.1.71 ◽

2015 ◽

Vol 25 (1) ◽

pp. 71-75 ◽

Cited By ~ 2

Author(s):

Amir Rezazadeh ◽

Richard L. Harkess

Keyword(s):

Plant Growth ◽

Leaf Area ◽

Plant Height ◽

Plant Growth Regulators ◽

Growth Regulators ◽

Stem Elongation ◽

Dry Weight ◽

Maximum Height ◽

Height Control ◽

Leaf Dry Weight

Purple firespike (Odontonema callistachyum), native to Central America, has potential for use as a new flowering potted plant. The effects of number of pinches (zero, one, or two) and number of cuttings (one, two, or three) per 6-inch pot were evaluated on the control of plant height. Plant height was suppressed as the pinch number increased. The greatest reduction was recorded with one cutting per pot and two pinches. The maximum number of branches per pot was recorded with two pinches and three cuttings per pot. In a second experiment, plant growth regulators (PGR) were also tested for efficacy of height control; 2 weeks after pinching, foliar sprays of paclobutrazol, flurprimidol, daminozide, chlormequat, and a tank-mix of daminozide + chlormequat or media drenches of paclobutrazol, uniconazole, or flurprimidol were applied. Plant height, leaf area, and leaf dry weight were recorded at 3, 6, and 9 weeks after PGR application. Maximum height control was obtained with uniconazole drench at 8 ppm, resulting in plants 22 cm tall, 61% shorter than the untreated control (56 cm); however, it resulted in severe leaf distortion. Plant height was 56% and 46% shorter than the control using drenches of paclobutrazol at 30 ppm and flurprimidol at 15 ppm, respectively. Daminozide spray at 2000 ppm and tank-mix of daminozide + chlormequat at 4500/1500 ppm suppressed stem elongation by 20.3% and 19%, respectively. Plants treated with paclobutrazol drench at 30 ppm reduced leaf area and leaf dry weight compared with other PGRs. Chlormequat spray at tested concentrations was ineffective for controlling firespike plant growth. The most attractive potted plants were produced using a drench application of paclobutrazol at 10 or 15 ppm.

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Effect of plant growth regulators on the root formation in in vitro culture of Abelmoschus Sagittifolius Kurz

Science and Technology Development Journal - Natural Sciences ◽

10.32508/stdjns.v4i2.710 ◽

2020 ◽

Vol 4 (2) ◽

pp. First

Author(s):

Trân Huỳnh Ngọc Dương ◽

Diễm Thị Lê ◽

Mai Thị Bạch Võ

Keyword(s):

Plant Growth ◽

Plant Growth Regulators ◽

Growth Regulators ◽

Root Formation ◽

Callus Formation ◽

Plant Root ◽

Germination Rate ◽

Distribution Area ◽

Increasing Demand

Abelmoschus sagittifolius Kurz is a medicinal plant with typical pharmacological of ginseng. However, the number of trees in the nature wild is declining rapidly due to the increasing demand for logging along with the narrowing of the distribution area and the low incidence of seed germination, affecting the use for researching and developing gene sources for drug production in many areas. In this plant, root is the most important organ of the plant, so the study of root formation in in vitro has been of great significance in assessing the effect of plant growth regulators on induction roots, as well as creating a source of starting material for studies on the biosynthesis of saponin in in vitro compounds as an alternative to outside planting. The results showed that after 2 weeks of culture, the germination rate was highest (88%) when the seeds were disinfected with HgCl2 0.1%, 3 minutes and then soaked in GA3 20,0 mg/L, 120 minutes, finally seed culture on MS + 20 g/L saccharose + GA3 5.0 mg/L + 7 g/L agar. The callus formation from hypocotyl in the environment on MS medium + 20 g/L sucrose + NAA 0.5 mg/L + BA 1.5 mg/L + 7 g/L agar was appropriate for root reduction and the best root formation was applied in the medium of MS + 20 g/L sucrose + IAA 0.3 mg/L + 7 g/L agar. In conclusion, the method of tissue culture is suitable for the formation of adventitious roots from callus formation from hypocotyl of Abelmoschus sagittifolius Kurz.

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Improving of true shallot seeds germination by the application of plant growth regulators and osmoconditioning treatment

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/951/1/012065 ◽

2022 ◽

Vol 951 (1) ◽

pp. 012065

Author(s):

K A Tanjung ◽

L A M Siregar ◽

R I M Damanik

Keyword(s):

Seed Germination ◽

Plant Growth ◽

Plant Growth Regulators ◽

Growth Regulators ◽

Root Length ◽

Germination Rate ◽

Block Design ◽

Dry Weight ◽

Peg 6000 ◽

The Difference

Abstract This study aims to determine the effect of the application of plant growth regulators and osmoconditioning treatment to improve the germination of true shallot seeds. This research was conducted in Asam Kumbang, Medan Selayang, Medan, Indonesia. The research method was a Randomize Block Design with 2 factors, the first factor is Plant Growth Regulators (Z) with 6 levels, namely Z0 (Without PGRs Application), Z1 (Gibberellin 500 ppm), Z2 (Putrescine 15 ppm), Z3 (Putrescine 20 ppm), Z4 (Putrescine 15 ppm + Gibberellin 500 ppm), Z5 (Putrescine 20 ppm + Gibberellin 500 ppm). The second factor was the osmoconditioning treatment with Polyethylene Glycol (PEG) 6000 (O) with 4 levels, namely O0 (Without Osmoconditioning Treatment), O1 (PEG 6000 3%), O2 (PEG 6000 4%), O3 (PEG 6000 5%). Parameters observed were germination rate, germination rate index, percentage of germination, germination ability, simultaneous growth of seeds, seedling length, root length, seedling dry weight, and catalase activity test. The results of this study were: application of plant growth regulators could improve true shallot seed germination, indicated by the observed values of all parameters which were significantly different from those of the control (without PGRs application). The plant growth regulator that produced the best increase in germination was Gibberellins 500 ppm, although the difference in effect with other PGRs was not significantly different. Meanwhile, the osmoconditioning treatment with PEG 6000 was also able to improve the germination of true shallot seeds as indicated by an increase in most of the observed parameters, but in the root length parameter it was seen that the tendency of PEG 6000 3% always gave the highest value but gave the lowest value for this parameter. The best concentration of PEG 6000 in the osmoconditioning treatment to improve true shallot seed germination was 3%.

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