scholarly journals The relationship of structure to activity in plant-growth-regulating compounds. 2. Growth-regulating activity of substituted amides of 2,4-dichlorophenoxyacetic acid

1962 ◽  
Vol 82 (3) ◽  
pp. 425-428 ◽  
Author(s):  
AM JOHNSTON
Keyword(s):  
Plant Growth ◽  
Dichlorophenoxyacetic Acid ◽  
2,4 Dichlorophenoxyacetic Acid ◽  
Relationship Of ◽  
The Relationship ◽  
Growth Regulating Activity

THE RELATIONSHIP OF GIBBERELLIN AND AUXIN IN PLANT GROWTH

1964 ◽  
Vol 5 (1) ◽  
pp. 61-69 ◽  
Author(s):  
SUSUMU KURAISHI ◽  
ROBERT M. MUIR
Keyword(s):  
Plant Growth ◽  
Relationship Of ◽  
The Relationship

scholarly journals Performance of Sesame (Sesamum indicum L.) as Influenced by 2,4 – Dichlorophenoxyacetic Acid and NPK Fertilizer

2018 ◽  
Vol 51 (4) ◽  
pp. 60-72
Author(s):  
E.K. Eifediyi ◽  
F.O. Ogedegbe ◽  
N.B. Izuogu ◽  
C.A. Adedokun ◽  
A. Katibi ◽  
...  
Keyword(s):  
Plant Growth ◽  
Plant Height ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Growth And Yield ◽  
Dichlorophenoxyacetic Acid ◽  
Significant Difference ◽  
Npk Fertilizer ◽  
2,4 Dichlorophenoxyacetic Acid ◽  
Savannah Zone

Abstract The Guinea savannah zone of Nigeria is beset by increasing population and infrastructural development, thereby putting pressure on available land with rapidly declining fertility due to low organic matter content, soil erosion, high temperature and seasonal bush burning. Sesame is cultivated in this zone and the yield has remained very low, compared to yield in other parts of the world. This could be attributed to poor nutrient status and poor cultural practices used by peasant farmers. A field experiment was conducted at the Teaching and Research Farm, University of Ilorin, Nigeria, in a southern Guinea savannah zone in 2015 and repeated in 2016 cropping season to determine the effects of 2,4-Dichlorophenoxyacetic acid (2,4-D), a plant growth regulator and NPK fertilizer on the growth and yield of sesame. The experiment was laid out as a factorial arrangement, fitted into a randomized complete block design replicated thrice. The factors imposed were 2,4-D (0, 5 and 10 ppm ha−1) and NPK 15:15:15 (0, 100, 200 and 300 kg ha−1). Data were collected on vegetative traits (plant height, number of leaves, leaf area) and yield components (number of capsules per plant; yield per plant and per hectare). The data were subjected to analysis of variance (ANOVA) using the Genstat statistical package 17th edition and significant means were separated by using the least significant difference at 5% level of probability. The result revealed that using plant growth regulator and NPK fertilizer had significant effects (p<0.05) on plant height (151 cm) and yield per hectare (530 kg/ha). The qualitative and quantitative analysis of the seeds further reaffirmed the presence of bioactive compounds, such as saponins, tannins, flavonoids and phenolic compounds, which are important health promoting food in the seeds.

scholarly journals Differential regulation of GS-GOGAT gene expression by plant growth regulators in Arabidopsis seedlings

2016 ◽  
Vol 68 (2) ◽  
pp. 399-404 ◽  
Author(s):  
Milan Dragicevic ◽  
Ana Simonovic ◽  
Milica Bogdanovic ◽  
Angelina Subotic ◽  
Nabil Ghalawenji ◽  
...  
Keyword(s):  
Plant Growth ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Expression Patterns ◽  
Nuclear Gene ◽  
Glutamate Synthase ◽  
Ammonium Assimilation ◽  
Dichlorophenoxyacetic Acid ◽  
2,4 Dichlorophenoxyacetic Acid ◽  
The Impact

Primary and secondary ammonium assimilation is catalyzed by the glutamine synthetase-glutamate synthase (GS-GOGAT) pathway in plants. The Arabidopsis genome contains five cytosolic GS1 genes (GLN1;1 - GLN1;5), one nuclear gene for chloroplastic GS2 isoform (GLN2), two Fd-GOGAT genes (GLU1 and GLU2) and a GLT1 gene coding for NADH-GOGAT. Even though the regulation of GS and GOGAT isoforms has been extensively studied in response to various environmental and metabolic cues in many plant species, little is known about the effects of phytohormones on their regulation. The objective of this study was to investigate the impact of representative plant growth regulators, kinetin (KIN), abscisic acid (ABA), gibberellic acid (GA3) and 2,4-dichlorophenoxyacetic acid (2,4-D), on the expression of A. thaliana GS and GOGAT genes. The obtained results indicate that GS and GOGAT genes are differentially regulated by growth regulators in shoots and roots. KIN and 2,4-D repressed GS and GOGAT expression in roots, with little effect on transcript levels in shoots. KIN affected all tested genes; 2,4-D was apparently more selective and less potent. ABA induced the expression of GLN1;1 and GLU2 in whole seedlings, while GA3 enhanced the expression of all tested genes in shoots, except GLU2. The observed expression patterns are discussed in relation to physiological roles of investigated plant growth regulators and N-assimilating enzymes.

scholarly journals Effect of Induced Polyploidy on Plant Growth, Chlorophyll and Flavonoid Content of Artemisia cina

2020 ◽  
Vol 12 (1) ◽  
pp. 90-96 ◽  
Author(s):  
Sri Kasmiyati ◽  
Elizabeth Betty Elok Kristiani ◽  
Maria Marina Herawati
Keyword(s):  
Plant Growth ◽  
Medicinal Plant ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Growth Parameters ◽  
Dry Weight ◽  
Dichlorophenoxyacetic Acid ◽  
Flavonoid Content ◽  
New Information ◽  
2,4 Dichlorophenoxyacetic Acid

Artemisia cina is one of a member of genus Artemisia that has potential as a medicinal plant. However, the levels of Artemisia medicinal bioactive compounds are very low. Polyploidization is an alternative method that can enhance of growth and secondary metabolite productions of plants. The aims of this research were to determine the effect of polyploid induction using colchicine and plant growth regulator toward plant growth, the chlorophyll, kaemferol and quercetin contents of A. cina. Four different A. cina used in this research consisted of two diploid genotypes (TWN and KJT) and two polyploid genotypes (J and M). Induction of mutant polyploid was conducted using colchicine and combination of plant growth regulator benziladenyl (BA) and 2,4-dichlorophenoxyacetic acid (2,4-D). The measured plant growth parameters were dry weight, leaf area, and plant height. The chlorophyll content of leaves was determined spectrophotometrically, and flavonoid content determined using HPLC. The result showed that the polyploid genotype (M) significantly decreased leaf and root growth compared to the KJT and TWN. In A. cina plants, polyploidization using colchicine is more effective in increasing the biomass than using combination plant growth regulator BA and 2,4-D. The flavonoid content of KJT was the lowest, and significantly different compared to the other plants. This study provides new information about the effect of polyploid on growth and flavonoid content in A. cina. This can be  useful information to develop A. cina to become a medicinal plant.

scholarly journals Distribution of Trans-Anethole and Estragole in Fennel (Foeniculum vulgare Mill) of Callus Induced from Different Seedling Parts and Fruits

2011 ◽  
Vol 3 (1) ◽  
pp. 79-86 ◽  
Author(s):  
Abd El-Moneim Mohamed Radwan AFIFY ◽  
Hossam Saad EL-BELTAGI ◽  
Anwer Abd El-Aziz HAMMAMA ◽  
Mahassen Mohamed SIDKY ◽  
Omneya Farouk Ahmed MOSTAFA
Keyword(s):  
Essential Oil ◽  
Plant Growth ◽  
Human Consumption ◽  
Dichlorophenoxyacetic Acid ◽  
Ms Medium ◽  
Foeniculum Vulgare ◽  
Local Cultivar ◽  
Murashige And Skoog Medium ◽  
Different Types ◽  
2,4 Dichlorophenoxyacetic Acid

In the present study, seeds from local cultivar of fennel were germinated on Murashige and Skoog medium (MS) without plant growth regulators. Different types of explants from the growing seedling such as cotyledonal leaves, hypocotyls, epicotyls and roots were cultured on MS medium, contained different concentrations of 2,4-dichlorophenoxyacetic acid (2,4-D) either alone or with kinetin. Differential responses in the essential oil constituents were observed in the induction and development of callus. The major components of essential oils includes estragole, trans-anethole, limonene and fenchone were studied under different conditions to find out the best methods which could be used to reduce the amount of estragole (not favorite for human consumption) and increase the amount of trans-anethole.

scholarly journals Sulphur Analogues of Indoleacetic Acid: Synthesis and Biological Activity of some Thionaphthenacetic Acids

1957 ◽  
Vol 10 (1) ◽  
pp. 80 ◽  
Author(s):  
NP Kefford ◽  
Judith M Kelso
Keyword(s):  
Acetic Acid ◽  
Biological Activity ◽  
Plant Growth ◽  
Indoleacetic Acid ◽  
Acid Synthesis ◽  
Dichlorophenoxyacetic Acid ◽  
Protoplasmic Streaming ◽  
2,4 Dichlorophenoxyacetic Acid ◽  
Indole 3 Acetic Acid ◽  
Acetic Acids

The thionaphthen�2�, �3-, -5-, -6�, and -7-acetic acids have been synthesized from the chlorides of the corresponding carboxylic acids by the Arndt-Eistert reaction and their plant growth-regulating activities, as indicated by their effects upon protoplasmic streaming, have been compared with those of indole-3-acetic acid (IAA) and 2,4-dichlorophenoxyacetic acid (2,4�D). The thionaphthen-3- and -7- acetic acids and IAA have similar effects upon protoplasmic streaming, while the effects of the thionaphthen-2-, -5-, and �6-acetic acids differ from those of IAA and resemble in part those of 2, 4-D.

Sign in / Sign up

Export Citation Format

Share Document