Peanut (Arachis hypogaea L.) Response to the Hormonal Plant Growth Regulator Early Harvest®

2004 ◽  
Vol 31 (2) ◽  
pp. 70-73 ◽  
Author(s):  
J. P. Beasley ◽  
W. J. Grichar ◽  
D. L. Jordan ◽  
R. G. Lemon ◽  
B. A. Besler ◽  
...  
Keyword(s):  
Plant Growth ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Economic Value ◽  
Indole Butyric Acid ◽  
Pod Yield ◽  
Commercial Plant ◽  
Commercial Mixture ◽  
Arachis Hypogaea L ◽  
Early Harvest

Abstract Experiments were conducted from 1996 through 2001 in Georgia, North Carolina, and Texas to determine peanut response to the commercial plant growth regulator Early Harvest® (a commercial mixture of cytokinin, gibberellic acid, and indole butyric acid). Early Harvest (applied in the seed furrow) or Early Harvest TST (applied as a dry seed treatment) followed by four foliar applications (four-leaf peanut, initial pegging, 14 d after initial pegging, and pod fill), was compared to non-treated peanut in five, 13, and three experiments in these respective states. Early Harvest did not affect pod yield or gross economic value of peanut regardless of location, cultivar, or edaphic and environmental conditions. These data suggest that a spray program consisting of Early Harvest most likely will not improve pod yield or gross economic value of peanut.

Successful stem cutting propagation of chickpea, its wild relatives and their interspecific hybrids

2006 ◽  
Vol 46 (10) ◽  
pp. 1349 ◽  
Author(s):  
N. Danehloueipour ◽  
G. Yan ◽  
H. J. Clarke ◽  
K. H. M. Siddique
Keyword(s):  
Plant Growth ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Interspecific Hybrids ◽  
Stem Cutting ◽  
Naphthalene Acetic Acid ◽  
Growth Stages ◽  
Donor Plant ◽  
Indole Butyric Acid ◽  
Cicer Species

A successful stem cutting method was developed to propagate chickpea (Cicer arietinum L.), its crossable wild annual relatives (C. reticulatum Ladiz. and C. echinospermum P.H. Davis) and their interspecific hybrids. The effect of plant growth regulator powder (0.5 mg/g indole butyric acid and 0.5 mg/g naphthalene acetic acid), honey, combined honey + plant growth regulator powder, different growth stages of the donor plant, and rooting substrates on rooting rate, root number, root length, and survival rate were investigated. The highest propagation success rate was achieved when cuttings were taken at the pre-flowering stage, treated with plant growth regulator powder and grown in a sand + potting mix substrate. The rooting rate ranged from 87.5 to 100% for chickpea, C. reticulatum and C. echinospermum, and interspecific hybrids. All of the accessions examined in the study were successfully propagated with the new method. This study provides a simple and efficient technique for vegetative propagation of Cicer species which will be useful for the multiplication of seed, production of clones for disease screening or for the development of mapping populations.

scholarly journals Peanut (Arachis Hypogaea L.) Cultivar Response to Prohexadione Calcium

2008 ◽  
Vol 35 (2) ◽  
pp. 101-107 ◽  
Author(s):  
David L. Jordan ◽  
Russell C. Nuti ◽  
Joshua B. Beam ◽  
Sarah H. Lancaster ◽  
James E. Lanier ◽  
...  
Keyword(s):  
Plant Growth ◽  
Plant Growth Regulator ◽  
Internode Elongation ◽  
Breeding Lines ◽  
Pod Yield ◽  
Final Experiment ◽  
Vine Growth ◽  
Arachis Hypogaea L ◽  
Prohexadione Calcium ◽  
Digging Efficiency

Abstract Peanut digging efficiency is often reduced due to excessive vine growth. The plant growth regulator prohexadione calcium retards vegetative growth and improves row visibility by inhibiting internode elongation resulting in improved digging efficiency and in some instances increases in pod yield. The objective of this research was to determine the effects of prohexadione calcium on row visibility and pod yield of newly released and commercially available cultivars AT VC-2, Brantley, CHAMPS, Georgia Green, Gregory, Perry, Phillips, NC-V 11, NC 12C, Tamspan 90, and VA 98R and the breeding lines N02006, N01013T, and VT 976133. Although differences in row visibility were noted among cultivars, prohexadione calcium improved row visibility in almost every experiment regardless of cultivar. The cultivars NC 12C and Perry were more responsive to prohexadione calcium in terms of pod yield than NC-V 11 or VA 98R. Response of these cultivars was independent of digging date. In other experiments, prohexadione calcium improved row visibility of the cultivars AT VC-2, Gregory, NC-V 11, Perry, VA 98R, and Wilson, but did not increase yield when compared with non-treated peanut. In a final experiment, prohexadione calcium improved row visibility of the Virginia market type cultivars Brantley, CHAMPS, Gregory, and Phillips and the experimental lines N02006, N01013T, and VT 976133. Row visibility for the experimental line N01013T was improved at 2 of 4 sites by prohexadione calcium. In a final experiment, prohexadione calcium increased row visibility of Georgia Green, Gregory, and Tamspan 90 but did not affect pod yield of these cultivars.

Peanut Response to Prohexadione Calcium, a New Plant Growth Regulator

1996 ◽  
Vol 23 (1) ◽  
pp. 1-9 ◽  
Author(s):  
Wayne E. Mitchem ◽  
Alan C. York ◽  
Roger B. Batts
Keyword(s):  
Plant Growth ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Calcium Salt ◽  
Lateral Branch ◽  
Arachis Hypogaea L ◽  
Butanedioic Acid ◽  
Effect On Yield ◽  
Prohexadione Calcium ◽  
Crop Maturity

Abstract Experiments in 1992, 1993, and 1994 evaluated prohexadione calcium (calcium salt of 3,5-dioxo-4-propionylcyclohexanecarboxylic acid) as a growth regulator for peanut (Arachis hypogaea L.). Two experiments in 1992 compared prohexadione calcium applied at 140 to 560 g ae/ha at the early pegging stage (PG) or at the row closure stage (RC). Greater suppression of main stem (MS) and cotyledonary lateral branch (CLB) length and greater row visibility at harvest were noted when prohexadione calcium was applied at RC. Prohexadione calcium applied at RC decreased MS and CLB length at harvest 16 to 27% and 14 to 29%, respectively, and greatly improved row visibility. Prohexadione calcium applied at PG generally reduced yield and the percentage of extra large kernels (ELK), fancy pods (FP), and total sound mature kernels (TSMK) but had no effect on crop maturity. Prohexadione calcium applied at RC generally had no effect on yield or the proportion of TSMK but increased the percentage of ELK, decreased the percentage of FP, and enhanced crop maturity. Two experiments in 1993 compared prohexadione calcium at rates of 47 to 280 g/ha applied at RC or at RC and again 3 wk later (RC3). Prohexadione calcium at 140 and 280 g/ha applied at RC suppressed MS and CLB length at harvest 11 to 18% and improved row visibility. Single and sequential applications were equally effective. Prohexadione calcium had no effect on yield, maturity, or the percentage of ELK, FP, and TSMK in 1993. One experiment in 1994 compared prohexadione calcium at rates of 186 to 280 g/ha applied at RC and RC3 or at RC and RC3 and 6 wk after RC (RC6). Results were similar with all treatments. MS and CLB length at harvest was reduced 29 to 34% and 28 to 32%, respectively, and row visibility was greatly improved. Prohexadione calcium increased yield 8% and increased the percentage of ELK but had no effect on the percentage of FP and TSMK. Daminozide [butanedioic acid mono (2,2-dimethylhydrazide)] at 950 to 1430 g ae/ha was included in all experiments as a comparison. Row visibility and suppression of MS and CLB length at harvest in prohexadione calcium-treated peanut were at least as great as in daminozide-treated peanut. Results indicate prohexadione calcium could be an effective-replacement for daminozide.

Peanut (Arachis hypogaea L.) Response to Cyclanilide and Prohexadione Calcium

2004 ◽  
Vol 31 (1) ◽  
pp. 33-36 ◽  
Author(s):  
D. L. Jordan ◽  
J. B. Beam ◽  
J. E. Lanier ◽  
S. H. Lancaster ◽  
P. D. Johnson
Keyword(s):  
North Carolina ◽  
Plant Growth ◽  
Plant Growth Regulator ◽  
Main Stem ◽  
Stem Height ◽  
Pod Yield ◽  
Vine Growth ◽  
Arachis Hypogaea L ◽  
Negative Impacts ◽  
Prohexadione Calcium

Abstract Excessive growth of Virginia market-type peanut affects row visibility and pod yield of peanut. Ten experiments were conducted from 2000 to 2002 in North Carolina to compare peanut response to cyclanilide and prohexadione calcium applied at 50% row closure followed by a repeat application 2 wk later. Cyclanilide and prohexadione calcium increased row visibility in all experiments. Main stem height was shorter at the end of the season when cyclanilide and prohexadione calcium were applied compared with non-treated peanut in all experiments except one. Prohexadione calcium improved row visibility compared with cyclanilide in three experiments and equaled cyclanilide in seven experiments. Main stem height was similar following application of cyclanilide and prohexadione calcium in eight of the 10 experiments. When pooled over experiments, pod yield ranged from 4210 to 4480 kg/ha and did not differ between non-treated peanut and peanut treated with either plant growth regulator. However, prohexadione calcium did increase pod yield of peanut compared with cyclanilide. Results indicate that cyclanilide is not as effective as prohexadione calcium in managing peanut vine growth because of inconsistent enhancement of row visibility and possible negative impacts on pod yield.

scholarly journals 154 Suppressing Purple Passion (Gynura aurantiaca) Flowering Using Selected Plant Growth Regulators

HortScience ◽  
2000 ◽  
Vol 35 (3) ◽  
pp. 416C-416
Author(s):  
Jianjun Chen ◽  
Russell D. Caldwell ◽  
Cynthia A. Robinson
Keyword(s):  
Plant Growth ◽  
Growth Regulators ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Early Spring ◽  
Aesthetic Value ◽  
Chlormequat Chloride ◽  
Commercial Plant ◽  
Lateral Shoots ◽  
Foliage Plant

Gynura aurantiaca is a colorful foliage plant with creeping stems and velvety purple hairs that cover the green leaves. It grows rapidly, but is cultivated primarily for those attractive purple leaves. Annually during the spring, this plant produces prominent flowers both in appearance and smell, gaudy and malodorous. Flowering coupled with acquiring an over-grown leggy appearance have been key limitations in its production and use in interiorscaping. This study was undertaken to determine if an available commercial plant growth regulator could inhibit flowering. A-Rest (ancymidol), B-Nine (daminozide), Bonzi (paclobutrazol), cycocel (chlormequat chloride) and florel (ethephon) each diluted to three different concentrations were sprayed in two applications in early spring at 2-week intervals. Flowering and bud numbers and plant growth (number of lateral shoots, vine lengths and internode lengths) were recorded. Results indicated that applications of A-Rest, B-Nine, Bonzi and Cycocel, regardless of treatment concentrations, were ineffective in suppressing the flowering of this plant; whereas, florel completely suppressed flowering at the three concentrations used. The florel-treated plants also grew more lateral shoots, which produced a compact and dense bush-look, indicating that appropriate concentrations of florel application not only will stop flowering of purple passion but can also improve and prolong its aesthetic value as a potted or hanging-basket interior plant.

scholarly journals Effect of Type of Natural Substances Plant Growth Regulator on Nutmeg (Myristica Fragrans) Seedlings

2019 ◽  
Vol 3 (1) ◽  
pp. 1
Author(s):  
Fitri Kurniati ◽  
Elya Hartini ◽  
Azhar Solehudin
Keyword(s):  
Plant Growth ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Block Design ◽  
Economic Value ◽  
Good Effect ◽  
Bamboo Shoot ◽  
Natural Substances ◽  
Myristica Fragrans ◽  
Long Time

Nutmeg (<em>Myristica fragrans Houtt</em>) is an important spices in Indonesia. The advantages of nutmeg is essential oil content, the result of distillation which is for the spices industry, the manufacture of soaps, perfumes, cosmetics, have high economic value and are a source of foreign exchange to non oil &amp; gas, Indonesia is able to supply the needs of the market the world of up to 70% to 75%. Generally, nutmeg in Indonesia use generative propagation which has the strong root system and long life, but the germination takes a long time. Using the natural plant growth regulators for germination can be used to accelerate growth. Natural PGR’s can be extracted from some plants such shallot as a source of auxin, banana hump as a source of cytokinins, and bamboo shoots as a source of giberellin.The purpose of this study was to determine the types of natural PGR’s that have good effect on the growth of nutmeg seedling. The experiment was carried out in Desa, Bugel, Kecamatan Ciawi Tasikmalaya with altitude at 600 meters above sea level, from June 2018 to September 2018. This study used Randomized Completely Block Design (RCBD) Method. The treatments were: a0= control, a1= shallot, a2= bamboo shoot, a3= banana hump, a4= shallot + bamboo shoot, a5= shallot +, banana hump, a6= bamboo shoot + banana hump, a7= shallot + bamboo shoot + banana hump.The result showed that:1) type of natural substances plant growth regulator effected on various growth variable, 2) Combination of shallot bulb + bamboo shoot, or combination of shallot bulb + bamboo shoot and banana hump good effected on plant height, seedling diametre, number of leaf, leaf area, and shoot root ratio.

Virginia Market Type Peanut (Arachis hypogaea L.) Response to the Nitrophenolic Plant Growth Regulator Chaperone®

2007 ◽  
Vol 34 (2) ◽  
pp. 105-108 ◽  
Author(s):  
Joel C. Faircloth ◽  
David L. Jordan ◽  
Dennis L. Coker ◽  
P. Dewayne Johnson ◽  
Gail U. White
Keyword(s):  
Plant Growth ◽  
Arachis Hypogaea ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Arachis Hypogaea L

scholarly journals The Response of 'Golden Delicious' Apple Grafted on M 9 and MM 106 Rootstock to Chemical Fruit Thinning

2017 ◽  
Vol 17 (2) ◽  
pp. 153
Author(s):  
Dragana Drobnjak
Keyword(s):  
Plant Growth ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Fruit Weight ◽  
Matter Content ◽  
Dry Matter Content ◽  
Fruit Thinning ◽  
Commercial Plant ◽  
Golden Delicious ◽  
Minimum Number

The effect of plant growth regulator in early stages of fruit development is to slow or stop the growth of lateral fruits and to cause their early drop. Two commercial plant growth regulator formulations naphthalene-acetamide (NAD) and naphthaleneaceticacid (NAA) were used. The applied doses of plant growth regulator were in accordance with the manufacturer's recommendations, for Amidthin 100-130 g/hl and Nokad 20-25 ml/hl. The first treatment was applied after full bloom, and the second when central fruit was 9-12 mm in size. The biggest effect on fruit weight and size was recorded on treated Golden Delicious fruits grafted on M 9 rootstock. It was found that minimum number of fruits per branch was on M 9 rootstock. Also, the most pronounced effect of fruit thinning regarding fruit weight and size was on trees grafted on M 9. Results showed that fruits had decreased firmness and increased dry matter content. However, it did not show significant differences in values of iodine - starch test and acid content.

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