scholarly journals Studies on Herbicides and Plant Growth Regulators. I. Synthesis and Herbicidal Activity of 6-Phenyl-2, 4-dinitrophenol Derivatives

1964 ◽  
Vol 12 (9) ◽  
pp. 1101-1111 ◽  
Author(s):  
Michihiko Ochiai
Keyword(s):  
Plant Growth ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Herbicidal Activity

scholarly journals PLANT GROWTH REGULATORS BASED ON CYCLIC KETALS AND THEIR DERIVATIVES

2017 ◽  
Vol 60 (1) ◽  
pp. 95
Author(s):  
Gul’nara Z. Raskil’dina ◽  
Yulianna G. Borisova ◽  
Natalia N. Mikhaiylova ◽  
Semyon S. Zlotskiy ◽  
Louise M. Mryasova ◽  
...  
Keyword(s):  
Plant Growth ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Herbicidal Activity ◽  
Aromatic Solvent ◽  
Water Emulsion ◽  
Pea Seedlings ◽  
Dicotyledonous Plants ◽  
Physical And Chemical

 For citation:Raskil’dinaG.Z., BorisovaY.G., MikhailovaN.N., MryasovaL.M., KuznetsovV.M., ZlotskiyS.S. Plant growth regulators based on cyclic ketals and their derivatives. Izv. Vyssh. Uchebn. Zaved. Khim. Khim. Tekhnol. 2017. V. 60. N 1. P. 95-101.Low toxicity of polyfunctional 1,3-dioxocyclicalkanes to soil bacteria allows to consider the compounds of this class as perspective herbicides. In this regard, we studied the herbicidal activity of a series of substituted cyclic ketals, their derivatives and alkenylmalonates. On the basis of commercially available triols the corresponding cyclic ketals were obtained with a yield more than 90%. O-alkylation of alcohol according to the methods led to the corresponding ethers and esters. The glycerol monoethers were obtained quantitatively by acid hydrolysis of ketals. Growth-regulatory activity of the synthesized compounds was determined in vitro on wheat and pea seedlings according to a known procedure (aromatic solvent - nefras A 150/330, surfactant - oxyethylated izononilfenol neonol AF-9-12). Evaluation of herbicidal activity of preparations was carried out in the laboratory. During 3 days length (L, mm) and weight (m, g) seedlings in comparison with the control option was measured. Without herbicide on seedlings the monocotyledonous and dicotyledonous plants are placed in Petri dishes containing water emulsion of active substances with a concentration of 5 mg / l and 10 mg / l for peas and 50 mg / l and 100 mg / l for wheat.  As a reference well-known herbicide, Oktapon Extra, was used. The diol with allyloxy-diol group showed the best results towards wheat. This compound successfully inhibits the increase in the length and weight of escape and gives close results to the standard. For peas, ketals and derivatives thereof are effective only in terms of inhibition of the shoot masses. Heterocyclic alcohol and glycols are superior to the standard, and a ketal at a concentration of 10 mg / l practically corresponds to it. Alkenylmalonates were more effective in inhibiting the escape weight wheat than peas. In particular, at a concentration of 100mg / l effectiveness of methallyl derivatives of trans-1,3-dichloropropene coincides to the standard. Physical and chemical characteristics of the compounds were proved by NMR and mass spectra. Screening results showed that activity of diol with allyloxy group is close to the ideal attitude to wheat. Ketals and their derivatives show the herbicidal activity only at inhibition of the mass escape of peas. Results of alkenylmalonates were better at inhibition of the mass escape of wheat than peas. The obtained results prove prospectivity of producing of herbicidal drugs based on the alkenylmalonates substituted diols and acetals, as a new generation of herbicides.

Wheat regenerants in the system of rapid assessment of the effect of 24-epibrassinolide

Biomics ◽  
2020 ◽  
Vol 12 (3) ◽  
pp. 394-397
Author(s):  
Seldimirova O.A. ◽  
M.V. Bezrukova ◽  
N.N. Кruglova ◽  
F.М. Shakirova
Keyword(s):  
Plant Growth ◽  
Experimental Model ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Drought Resistance ◽  
Rapid Assessment ◽  
Immature Embryo ◽  
Model System ◽  
Wheat Cultivars ◽  
Experimental Model System

The influence of 24-epibrassinolide on the efficiency of regenerants obtained from embryonic calli formation was studied in wheat cultivars contrast for drought resistance. The possibility of using the experimental model system «immature embryo – embryonic callus – regenerant» in the rapid assessment of the effect of antistress plant growth regulators is shown.

Somatic Embryogenesis and Plant Development in Eight Cultivars of Pecan

HortScience ◽  
1990 ◽  
Vol 25 (5) ◽  
pp. 573-576 ◽  
Author(s):  
I.E. Yates ◽  
C.C. Reilly
Keyword(s):  
Somatic Embryogenesis ◽  
Plant Growth ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Plant Development ◽  
Fruit Development ◽  
Somatic Embryos ◽  
Carya Illinoensis ◽  
Appreciable Variation

The influence of stage of fruit development and plant growth regulators on somatic embryogenesis and the relation of cultivar response on somatic embryogenesis and subsequent plant development have been investigated in eight cultivars of pecan [Carya illinoensis (Wangenh.) C. Koch]. Explants from the micropylar region of the ovule were more embryogenic when removed from fruits in the liquid endosperm stage than were intact ovules from less-mature fruits or from cotyledonary segments of more-mature fruits. Explants conditioned on medium containing auxin alone or auxin + cytokinin produced more somatic embryos than medium containing cytokinin alone. Under the conditions of this study, frequency of embryogenesis, as well as the germination of somatic embryos leading to plant development, indicated appreciable variation among cultivars. Plant development was greatest by far from somatic embryos of `Schley' than other cultivars studied.

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