A Comparison of Synthetic Growth Regulators with Indoleacetic Acid, with Respect to Methionine Metabolism

Weeds ◽  
1965 ◽  
Vol 13 (3) ◽  
pp. 280 ◽  
Author(s):  
Jay D. Mann ◽  
Lowell S. Jordan ◽  
Boysie E. Day
Keyword(s):  
Growth Regulators ◽  
Indoleacetic Acid ◽  
Methionine Metabolism ◽  
Synthetic Growth

scholarly journals Response of pine hypocotyl sections to growth regulators and related substances

2015 ◽  
Vol 44 (1) ◽  
pp. 123-132
Author(s):  
J. Zakrzewski
Keyword(s):  
Acetic Acid ◽  
Growth Regulators ◽  
Growth Response ◽  
Extended Period ◽  
Dichlorophenoxyacetic Acid ◽  
Pinus Silvestris ◽  
Related Substances ◽  
2,4 Dichlorophenoxyacetic Acid ◽  
Indole 3 Acetic Acid ◽  
Synthetic Growth

Growth response of <i>Pinus silvestris</i> hypocotyl sections to some synthetic growth regulators and related substances was studied. Elongation of hypocotyl sections was stimulated by naphtaleneacetic acid, indole-3-acetic acid, in-dole-3-propionic acid, indole-3-butyric acid, 2,4-dichlorophenoxyacetic acid, indoleaoetic amide, indoleacetic nitrile and coumarin. Indole-3-acetic acid and naphtaleneacetic acid extended period of growth up to 16 and 24 hours, respectively. Growth was inhibited by kinetin, trans-cinnamic acid and 2,3,5-tri-iodobenzoic acid. No effect of gibberellic acid, tryptophan and biotin was observed.

scholarly journals The main directions in the implementation of organic agriculture

2021 ◽  
Vol 39 ◽  
pp. 05003
Author(s):  
N.P. Zuev ◽  
N.N. Shvetsov ◽  
Y.P. Breslavets ◽  
V.A. Shumsky ◽  
Y.P. Masalykina
Keyword(s):  
Growth Regulators ◽  
Organic Agriculture ◽  
Gradual Decrease ◽  
Drug Resistant ◽  
Animal Diseases ◽  
Causative Agents ◽  
Livestock Feeding ◽  
Relationship Of ◽  
Synergistic Relationship ◽  
Synthetic Growth

Measures for the introduction of organic agriculture, along with the use of appropriate techniques in agriculture, imply the rejection of the use of chemical-synthetic growth regulators or hormones; limited, strictly tied to the area, livestock; feeding animals, if possible, with their own feed, minimum purchase of feed and avoiding antibiotics. However, there is currently no way to permanently stop using antibiotics. Therefore, a gradual decrease in doses, frequency and timing of their application is relevant. The work is devoted to the implementation of this direction. A synergistic relationship of gentamicin and tylosin was established with an increase in the efficiency of using the created composite preparation with a decrease in the dose and the possibility of the formation of drug-resistant populations of bacteria - causative agents of animal diseases.

scholarly journals Factors affecting hemp (Canabis sativa L.) callus genesis in somatic tissue culture

2019 ◽  
Vol 25 (4) ◽  
Author(s):  
Ernestas Maumevičius ◽  
Natalija Burbulis ◽  
Aušra Blinstrubienė ◽  
Irina Laiko ◽  
Ramunė Masienė
Keyword(s):  
Growth Regulators ◽  
Callus Induction ◽  
Indoleacetic Acid ◽  
Callus Formation ◽  
Leaf Explants ◽  
Research Centre ◽  
Hypocotyl Explants ◽  
Mean Frequency ◽  
Cotyledon Explants ◽  
The Mean

Research was carried out at the Institute of Biology and Plant Biotechnology of Aleksandras Stulginskis University and at the Laboratory of Agrobiotechnology of the Joint Research Centre. The effect of growth regulators on the callus induction from hypocotyl, cotyledon and leaf explants was evaluated. The isolated explants were cultivated in the MS medium without growth regulators and supplemented with different zeatine (ZT) and α-naftilacetic acid (NAA) or indoleacetic acid (IAA) combinations and thidiazuron (TDZ) and ɑ-naftilacetic acid (NAA) or indoleacetic acid (IAA) combinations. The highest callus formation frequency from hypocotyl explants was obtained in the medium supplemented with 2.0 mg l–1 ZT + 1.0 mg l–1 IAA (‘KAN-30’ and ‘KAN-38’) and – 1.0 mg l–1 ZT + 0.5 mg l–1 NAR (‘KAN-34’). The combination of 2.0 mg l–1 ZT with 1.0 mg l–1 NAA was most appropriate for the callus induction from cotyledon explants. The optimal combination of growth regulators for callus induction from leaf explants should be selected for a specific genotype. The mean rate of callus formation frequency from leaf explants was 4.8–5.6 times higher in comparison with the mean frequency form hypocotyl explants and 2.7–3.1 times higher as compared to the mean frequency from cotyledon explants.

EFFECT OF PLANT GROWTH REGULATORS ON THE INFECTIVITY OF TOBACCO MOSAIC VIRUS

1964 ◽  
Vol 42 (7) ◽  
pp. 885-889 ◽  
Author(s):  
Victor Weeraratne ◽  
Avery E. Rich
Keyword(s):  
Growth Regulators ◽  
Room Temperature ◽  
Indoleacetic Acid ◽  
Inhibitory Effect ◽  
Indolebutyric Acid ◽  
Meat Extract ◽  
Naturally Occurring ◽  
Chlorophenoxyacetic Acid ◽  
Coconut Meat

A naturally occurring growth regulator, coconut meat extract, was tested for the inhibition of tobacco mosaic (TMV) virus infection. Coconut meat extract inhibited infection by 97%. The inhibitor in coconut meat extract was effective when the virus inoculation took place 8 days after the application of the inhibitor, but the inhibitor was ineffective when applied after inoculation with the virus. Aging in vitro for 64 days at 4 °C and at room temperature did not reduce the inhibitory effect of coconut meat extract, but dilution markedly reduced its inhibitory effect. Three commercially available growth regulators, indoleacetic acid, indolebutyric acid, and p-chlorophenoxyacetic acid, were tested at a concentration of 100 p.p.m., but their inhibiting activity was very low.

AXILLARY SHOOT STIMULATION AND PLANT DEVELOPMENT OF COLEUS TREATED WITH CERTAIN PLANT GROWTH REGULATORS

1978 ◽  
Vol 58 (4) ◽  
pp. 971-976 ◽  
Author(s):  
M. KHOSH-KHUI ◽  
I. ROUHANI ◽  
B. SHAYBANY
Keyword(s):  
Plant Growth ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Plant Development ◽  
Indoleacetic Acid ◽  
Leaf Size ◽  
The Other ◽  
Axillary Shoot ◽  
Coleus Blumei ◽  
Number Of Branches

N6-benzyladenine (BA), indoleacetic acid (IAA) and 2-choroethylphosphonic acid (ethephon) were applied to pinched and non-pinched plants of four cultivars of coleus (Coleus blumei Benth). All growth regulators increased the number of branches of treated plants, with 800 ppm BA having the most prominent effect. Ethephon treatments dwarfed the plants and decreased leaf size, while BA and IAA enhanced these characters. Plants treated with ethephon developed more leaves in most of the cultivars, as compared with the other two growth regulators. BA-treated plants had lower, and IAA-treated plants had higher, shoot fresh and dry weights than controls.

Petiole growth in Ranunculus sceleratus: the role of growth regulators and the leaf blade

1983 ◽  
Vol 61 (12) ◽  
pp. 3326-3331 ◽  
Author(s):  
Ananda B. Samarakoon ◽  
Roger F. Horton
Keyword(s):  
Growth Regulators ◽  
Leaf Blade ◽  
Indoleacetic Acid ◽  
Intact Plants ◽  
Low Levels

In the presence of the leaf blades, excised petioles of the semiaquatic celery-leaved buttercup Ranunculus sceleratus L. elongate when submerged, or when treated in air with indoleacetic acid (IAA), gibberellin A3 (GA3), or C2H4 alone or in combination, responses that are similar to those obtained using intact plants. Isolated petiole sections do not respond to C2H4, but are responsive in the presence of low levels (10−6 mol L−1) IAA. Gibberellin A3 is less active than IAA in promoting growth or in sensitizing the petiole tissue to C2H4.

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