scholarly journals The Effect of Plant Growth Regulator on Duku (Lansium domesticum Corr.) Flower for Fruit Formation

2018 ◽  
Vol 2 (3) ◽  
pp. 100
Author(s):  
Susilawati Susilawati ◽  
Lidwina Ninik S. ◽  
Mery Hasmeda ◽  
Irmawati Irmawati
Keyword(s):  
Plant Growth ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Fruit Weight ◽  
Randomized Design ◽  
Fruit Maturity ◽  
Lansium Domesticum ◽  
Fruit Formation

Plant growth regulators have a significant impact on increasing both quality and quantity of plant yield for either mixed or separated application. The research was aimed to identify the effect of spraying  plant growth regulators on duku flowers for fruit formation. The research was conducted from December 2014 to May 2015 in Sijacarana Local Technical Implementation Unit (UPTD) of Propagation, South Sumatra Province in Ogan Komering Ulu (OKU) Timur Regency. Duku tree used was 15 years old with the height around 10 meter. Complete Randomized Design was used with 3 replications where duku trees as the replicates. The spraying  consisted of 3 single plant growth regulator treatments and 6 mixed treatments which were P1 (BAP 300 mg.L-1), P2 (NAA 300 mg.L-1), P3 (GA3 300 mg.L-1), P4 (BAP 100 mg. L-1 + GA3 200 mg.L-1), P5 (BAP 200 mg.L-1 + GA3 100 mg.L-1), P6 (BAP 150 mg.L-1 + GA3 150 mg.L-1), P7 (NAA 100 mg.L-1 + GA3 200 mg.L-1), P8 (NAA 200 mg.L-1 + GA3 100 mg.L-1), P9 (NAA 150 mg.L-1 + GA3 150 mg.L-1). Spraying was applied twice with a half dosage for each application. First application was performed about one month after flowering, and the second was one and a half month after flowering. Data were analyzed using analysis of variance and least significance difference at α 5%. The measurement of parameters were carried after harvest or 3 months after treatment. Results showed that plant growth regulator positively affected duku fruit formation. GA3 treatment then was considered as the best treatment as it had a unison in fruit maturity, the highest number of fruit per bunch, weight per fruit and total fruit weight per bunch, and had the lowest number of green fruit and seed per fruit.

scholarly journals Plant growth regulators promote growth and yield of summer tomato (lycopersicone sculentum Mill.)

2015 ◽  
Vol 26 (1) ◽  
pp. 32-37 ◽  
Author(s):  
M Rahman ◽  
MA Nahar ◽  
MS Sahariar ◽  
MR Karim
Keyword(s):  
Plant Growth ◽  
Plant Height ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Fruit Weight ◽  
Fruit Yield ◽  
Growth And Yield ◽  
The Impact

An experiment was conducted at the Horticulture Farm of Bangladesh Agricultural University, Mymensingh to test the impact of plant growth regulators on growth and yield of summer tomato. The experiment consisted of two tomato varieties viz. BARI Hybrid Tomato-4 and BARI Hybrid Tomato-8 and four types of plant growth regulator (PGR)viz.,(i) control (without PGR), (ii) 4-CPA (4-chlorophenoxy acetic acid), GA3 (gibberellic acid) and 4-CPA +GA3. The two-factor experiment was laid out in randomized complete block design with three replications. The results of the experiment revealed that significant variations were observed for most of the characters studied. At 75 DAT, the tallest plant (79.35 cm), number of flowers and fruits (38.11 and 19.04, respectively) plant-1, individual weight (58.44 g) and fruit yield (22.75 t ha-1) were found in BARI Hybrid Tomato-8.At 75 DAT the maximum plant height (87.90 cm), number of flowers and fruits (49.04 and 21.9, respectively) plant-1, individual fruit weight (61.16 g), and fruit yield (27.28 tha-1) were found when 4-CPA + GA3 applied together, whereas the minimum for these characters were recorded from control plants. In case of combined effect of variety and plant growth regulator, the maximum plant height (87.90 cm), number of flowers and fruits (49.04 and 21.91, respectively) plant-1, individual fruit weight (61.16 g) and fruit yield (27.28 t ha-1) were observed in BARI Hybrid Tomato-8 when treated with 4-CPA + GA3together, and the minimum for all these parameters were found in control plants. The results of the present study suggest thatboth 4-CAP and GA3together can be practiced for increasing summer tomato production for both the varieties.Progressive Agriculture 26:32-37, 2015

scholarly journals Plant Growth Regulator Impacts on Vegetative Cutting Production of Moroccan Pincushion (Pterocephalus depressus) Plants

2021 ◽  
Vol 39 (2) ◽  
pp. 62-67
Author(s):  
Sean J. Markovic ◽  
James E. Klett
Keyword(s):  
Plant Growth ◽  
Gibberellic Acid ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Growth Index ◽  
Dry Weight ◽  
Stock Plant ◽  
Cutting Production

Abstract Moroccan pincushion (Pterocephalus depressus) is a drought-tolerant perennial that is being used in landscapes throughout arid areas of the western United States. This paper describes two experiments researching vegetative cutting production from stock plants. Moroccan pincushion stock plants received foliar applications of gibberellic acid (GA3), benzyladenine, ethephon, or auxin [indole-3-butyric acid (IBA)] plant growth regulators (PGR). Plant growth regulators were applied singularly and in combination with GA3 to determine efficacy on stock plant growth. A propagation study was conducted simultaneously to determine effects of these different PGR treatments applied to stock plants on the rooting of moroccan pincushion cuttings. The stock plant study showed GA3 + benzyladenine application increased cutting production over other PGR treatments. Fresh weight of moroccan pincushion cuttings did not differ among treatments. While cuttings did not differ in dry weight in experiment 1, statistical differences were observed in experiment 2. However, these differences in dry weight did not affect the quality of the cuttings. Cuttings from stock plants treated with GA3 + IBA treatment had the highest numerical growth index [(height + width + width)/3]. Cuttings from stock plants treated with GA3 alone or in combination with another PGR were all greater in average growth index and statistically differed from those without GA3 being applied. PGR treatments did not affect rooting percentages of the cuttings with nontreated stock plant cuttings successfully rooting at an average rate of 95%. However, GA3 + IBA was the only treatment where cuttings had 100% rooting for both experiments, indicating potential rooting benefits. Index words: Plant growth regulator, propagation, Pterocephalus depressus, vegetative cuttings. Species used in this study: Moroccan pincushion [Pterocephalus depressus Archibald]. Chemicals used in this study: gibberellic acid (GA3), benzyladenine, ethephon, indole-3-butyric acid (IBA).

scholarly journals Paclobutrazol, Uniconazole, or Flurprimidol Applied at Various Concentrations as a Substrate Drench or Through Subirrigation Have Little Effect on Bee Balm Growth

2014 ◽  
Vol 24 (3) ◽  
pp. 313-317
Author(s):  
Rachael E. Pepin ◽  
Janet C. Cole
Keyword(s):  
Plant Growth ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Plant Size ◽  
Plant Responses ◽  
Production Environments ◽  
Monarda Didyma

Summer and fall studies investigated the control of growth of bee balm (Monarda didyma ‘Marshall’s Delight’) by paclobutrazol, uniconazole, or flurprimidol applied to the substrate as a surface drench or through subirrigation. Flurprimidol and uniconazole were applied at 0, 0.5, 1.0, 1.5, or 2.0 ppm (0, 0.09, 0.18, 0.27, or 2.0 mg/pot), while paclobutrazol was applied at 0, 2, 4, 6, or 8 ppm (0, 0.6, 1.2, 1.8, or 2.4 mg/pot). Substrate drench applications were more effective than applications through subirrigation at reducing plant growth. Few trends in application concentrations within plant growth regulator occurred for the plant parameters measured. Based on inconsistent plant responses between the two studies and few differences among application concentrations, we do not recommend any of these plant growth regulators for controlling plant size of bee balm during production without further testing in production environments specific to bee balm.

scholarly journals Plant Growth Regulators

EDIS ◽  
2009 ◽  
Vol 2009 (4) ◽  
Author(s):  
Frederick M. Fishel
Keyword(s):  
Plant Growth ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Previous Version ◽  
Fact Sheet ◽  
Patterns Of Use

Revised! PI-102, a 5-page fact sheet by Frederick M. Fishel, defines the term, “plant growth regulator,” addresses patterns of use for plant growth regulators, and provides a listing of plant growth regulators registered for use in Florida. Published by the UF Department of Agronomy, April 2009. Revised January 2015 and February 2018. Retired from active collection, February 11, 2021.   Previous version: Fishel, Frederick. 2006. “Plant Growth Regulators”. EDIS 2006 (6). https://doi.org/10.32473/edis-pi139-2006.

Plant Growth Regulators Alter the Growth of ‘Tifway’ Bermudagrass (Cynodon transvaalensis×C. dactylon) and Selected Turfgrass Weeds

1999 ◽  
Vol 13 (1) ◽  
pp. 132-138 ◽  
Author(s):  
David B. Lowe ◽  
Ted Whitwell
Keyword(s):  
Plant Growth ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Purple Nutsedge ◽  
Weed Growth ◽  
Cynodon Transvaalensis ◽  
Large Crabgrass

Growth-regulating characteristics of trinexapac-ethyl, paclobutrazol, and flurprimidol were investigated on ‘Tifway’ bermudagrass and four turfgrass weeds (large crabgrass, goosegrass, bahiagrass, and purple nutsedge). All treatments reduced the height of Tifway bermudagrass (25 to 37%) and large crabgrass (14 to 34%), but the height of purple nutsedge, goosegrass, and bahiagrass was not consistently changed. In 1995, all rates of trinexapac-ethyl reduced clipping weights of Tifway bermudagrass (70 to 87%) and bahiagrass (53 to 59%) more than large crabgrass, goosegrass, or purple nutsedge (< 39%). Trinexapac-ethyl (0.4 kg ai/ha) and paclobutrazol (1.1 kg ai/ha) applications increased both large crabgrass clipping weight and canopy visible density. Increased large crabgrass density was attributed to greater tiller numbers with trinexapac-ethyl (60 tillers/pot) and paclobutrazol (63 tillers/pot) compared to untreated large crabgrass plants (53 tillers/pot). Weed growth was not suppressed as much as Tifway bermudagrass growth; therefore, turfgrass stands may be adversely affected by plant growth regulator use under weedy conditions.

scholarly journals Pengaruh Pemberian Berbagai Zat Pengatur Tumbuh Alami terhadap Pertumbuhan Stek Kopi

2017 ◽  
Vol 8 (1) ◽  
pp. 46
Author(s):  
Isna Tustiyani
Keyword(s):  
Plant Growth ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Block Design ◽  
Coconut Water ◽  
Natural Plant ◽  
Onion Extract ◽  
Randomized Complete Block Design

Kopi merupakan salah satu komoditas perkebunan unggulan nasional. Pembibitan kopi umumnya melalui biji, padahal kopi dapat dibudidayakan melalui cara vegetative yaitu stek asal diberi perlakuan at pengatur tumbuh. Tujuan penelitian  ini adalah untuk  mempelajari pengaruh pemberian berbagai zat pengatur tumbuh alami pada stek kopi. Percobaan dilaksanakan di Kebun Percobaan  Fakultas Pertanian, Universitas Garut pada Oktober – November 2016 menggunakan Rancangan Acak Kelompok (RAK) dengan perlakuan tanpa pemberian ZPT, growtone, ekstrak bawang merah, dan air kelapa. Hasil percobaan dapat disimpulkan bahwa pemberian ekstrak bawang merah dapat menumbuhkan sebesar 50% dan penggunaan growtone sebesar 55% stek kopi hidup.KATA KUNCI: auksin, air kelapa, ekstrak bawang merah,  stek kopi  THE EFFECT OF VARIOUS NATURAL PLANT GROWTH REGULATOR ON GROWTH CUTTINGS OF COFFEEABSTRACTThe Coffee is one of national excellent commodities. The Nurseries of coffee generally through the beans, but it can be grown through vegetative through by cuttings treated with growth regulators. The purpose of this research was to study the effect of various naturally plant growth regulators in coffee cuttings. The experiment was conducted at the Experimental Farm, Faculty of Agriculture, University of Garut in October-November, 2016 using Randomized Complete Block Design with treatment  without giving plant growth regulator, growtone, onion extract, and coconut water. The result showed  that the extract of onion can grow at 50% and the growtone treatments  can grow 55% of the coffee cuttings. 

scholarly journals ​Response of Plant Growth Regulator on Bulb Yield of Onion (Allium cepa L.)

2021 ◽  
Author(s):  
Archana Kale ◽  
Javed Shaikh ◽  
Ravi Chandra Sharma ◽  
S. Ghawade
Keyword(s):  
Plant Growth ◽  
Plant Growth Regulators ◽  
Allium Cepa ◽  
Growth Regulators ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Protein Hydrolysate ◽  
Seaweed Extract ◽  
Allium Cepa L ◽  
Bulb Yield

Background: Maharashtra ranks first in onion (Allium cepa L.) production with a share of 28.32%. However, the productivity of onion is low as compared to other countries. In order to enhance onion productivity, new and innovative agri-inputs are being tried continuously like providing humic acid, fulvic acid, plant growth regulators (PGR), auxin/amino acid spray, seaweed extract, biofertilizers, sulphur application etc. PGRs are considered to be one of the novel inputs that can help in increasing the productivity of onion in India economically. Plant growth regulators are considered as a new generation of agrochemicals when added in small amounts, modify the growth of the plants usually by stimulation or modifying one part of natural growth regulatory system, thereby increasing the crop yield. Most of the research data available is based on biochemical, seaweeds etc. Almost negligible literature is available pertaining to a PGR made with formulation of Seaweed extract and Protein Hydrolysate. An attempt has been made in this research work to evaluate the effect of PGR formulated with seaweed extract and Protein Hydrolysate as major constituents on onion bulb yield through both foliar and drenching application. Methods: A field experiment for evaluating the effect of plant growth regulator (PGR) formulated by Research and Development Department, M/s Rashtriya Chemicals and Fertilizers Limited was conducted at Chilli and Vegetable Research Farm, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola (MH). During the experiment, the effect of different concentration of PGR viz., 0.2%, 0.4%, 0.6% and 0.8% and 1.0%, 1.2%, 1.4% and 1.6% through foliar and drenching application, respectively were studied. Result: Statistically, significant results of plant growth regulator application on vegetative growth, yield and qualitative characters of onion crop were observed. Significantly, maximum bulb yield was observed in the treatment PGR @ 0.6% (255.41 kg/ha) through foliar application which is at par with the treatment PGR @ 1.4% (246.67 kg/ha) through soil drenching along with RDF. According to the results, the suitable PGR dose for studied characters of onion under prevailing conditions was 0.6% foliar spray and 1.4% soil drenching along with recommended dose of fertilizers.

scholarly journals 303 Effect of Growth Regulators on the Growth and Performance of Celosia plumosus

HortScience ◽  
1999 ◽  
Vol 34 (3) ◽  
pp. 494F-495
Author(s):  
Sabrina L. Shaw ◽  
Eddie B. Williams ◽  
William F. Hayslett
Keyword(s):  
Plant Growth ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Species Group ◽  
Control Group ◽  
New Variety ◽  
Group I ◽  
Significant Difference

Seedlings of Celosia plumosus `New Look', a new variety, were evaluated for their response to the recommended rates of three different plant growth regulators commonly used by growers. The plant growth regulators were B-nine, paclobutrazol, and uniconizole. These plant growth regulators were applied at the rate recommended by the manufacturer for this species. Group I, the control, was not treated with a plant growth regulator, but was sprayed with water at the same time the other treatments were applied. Plants were grown in 5-inch plastic pots in the greenhouse. Plant height was recorded before treatment and once weekly thereafter for the duration of the experiment. Upon termination of the experiment, plant top fresh weight and top dry weight were measured. Results showed that at the recommended rate for all three plant growth regulators, there were no significant difference in height or weight between the plant growth regulator-treated groups of plants or the control group. The only observable difference noted was in leaf coloration of the plants treated with plant growth regulators.

scholarly journals Type and Rate of Plant Growth Regulator Influence Vegetative, Floral Growth, and Quality of Little Lime™ Hydrangea

2013 ◽  
Vol 23 (3) ◽  
pp. 306-311 ◽  
Author(s):  
Diana R. Cochran ◽  
Amy Fulcher
Keyword(s):  
Plant Growth ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Growth Regulator ◽  
Vegetative Growth ◽  
Plant Growth Regulator ◽  
Water Control ◽  
Flower Number ◽  
Branch Number

The objective of these experiments was to evaluate the response of Little Lime™ hardy hydrangea (Hydrangea paniculata ‘Jane’) across two seasons in response to single foliar applications of three plant growth regulators (PGRs) at two rates: dikegulac sodium at 800 or 1600 ppm, benzyladenine at 300 or 600 ppm, or ethephon at 500 or 1000 ppm. There were two additional treatments: a hand-pruned control leaving three nodes and an unpruned water control (untreated) applied the same day as the PGR applications. To evaluate PGR efficacy, vegetative growth, floral attributes, branch symmetry, and phytotoxicity were assessed. Dikegulac sodium significantly increased branch number (BN) compared with all other treatments. Branch symmetry was greater in dikegulac sodium (800 or 1600 ppm) and hand-pruned treatments compared with the untreated and other PGR treatments (2011 and 2012). Flower number was greater in all PGR treatments compared with hand-pruned plants (2011 and 2012). The only treatment that promoted more symmetrical branching without reducing flower count was dikegulac sodium (800 or 1600 ppm). Phytotoxicity was observed in both seasons; however, no injury symptoms were evident 16 weeks after treatment (WAT), the termination of the experiment.

scholarly journals EFFECT OF PLANT GROWTH REGULATORS FOR INDUCTION OF PARTHENOCARPIC FRUIT IN KAKROL (Momordica dioica Roxb.)

2007 ◽  
Vol 20 (2) ◽  
pp. 17-22 ◽  
Author(s):  
R. N. Chowdhury ◽  
M. G. Rasul ◽  
A. K. M. Aminul Islam ◽  
M. A. K. Mian ◽  
J. U. Ahmed
Keyword(s):  
Plant Growth ◽  
Gibberellic Acid ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Plant Growth Regulator ◽  
Fruit Set ◽  
Fruit Weight ◽  
Parthenocarpic Fruit ◽  
Three Stages ◽  
Fruit Diameter

An experiment was conducted to find out the suitable plant growth regulator(s) for inducing parthenocarpic fruit in kakrol (Momordica dioicia Roxb). Four plant growth regulators, viz. NAA and 2, 4-D (Auxins), Fulmet (Cytokinine) and GA3 (Gibberellic acid) were sprayed at three stages (a day before anthesis, at anthesis, a day after anthesis). Out of four growth regulators 2, 4-D and fulmet induced parthenocarpic fruit development. Fruit set percent, final fruit weight, fruit length and fruit diameter varied significantly with different treatment combinations. 2, 4-D at 50 ppm when applied at anthesis showed better performance in inducing parthenocarpy.DOI: http://dx.doi.org/10.3329/bjpbg.v20i2.17030

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