Gibberellic acid and indole acetic acid compete in ethylene promoted abscission

Planta ◽  
1976 ◽  
Vol 129 (3) ◽  
pp. 275-276 ◽  
Author(s):  
Page W. Morgan
Keyword(s):  
Acetic Acid ◽  
Gibberellic Acid ◽  
Indole Acetic Acid

scholarly journals Endogenous hormonal content during grain development in hexaploid and tetraploid wheat

1970 ◽  
Vol 33 (3) ◽  
pp. 493-502 ◽  
Author(s):  
Sridhar Gutam ◽  
Virendra Nath ◽  
GC Srivastava
Keyword(s):  
Growth Rate ◽  
Acetic Acid ◽  
Abscisic Acid ◽  
Gibberellic Acid ◽  
Grain Growth ◽  
Indole Acetic Acid ◽  
Tetraploid Wheat ◽  
Weight Basis ◽  
Ploidy Levels ◽  
Hormonal Content

A pot experiment was conducted in the rabi (post rainy) seasons of 2001 and 2002 to study the genotypic differences in grain growth rate and endogenous hormonal content in the developing grains of hexaploid and tetraploid wheat. The endogenous hormonal contents of grains in both the ploidy levels had changed in sequence. At 5 days after anthesis (DAA), gibberellic acid (GA3); at 15 DAA (rapid growth phase), indole-acetic acid (IAA); at 25 DAA (dough stage), abscisic acid (ABA) were maximum. At 35 DAA, all the endogenous hormonal level decreased and among the hormones, ABA was highest followed by IAA and GA3. Hexaploids recorded higher concentrations of endogenous hormones (13.38% IAA, 17.89% GA3, and 14.7% ABA) on fresh weight basis and resulted in higher seed weight (56.99 mg/grain) and grain growth rate (0.009 g/g/day) compared to tetraploids (49.08 mg/grain; 0.008 g/g/day) on dry weight basis by better mobilization of photosynthates during grain filling. Key Words: Grain growth rate, hormones, indole-acetic acid, gibberellic acid, abscisic acid. doi:10.3329/bjar.v33i3.1608 Bangladesh J. Agril. Res. 33(3) : 493-502, September 2008

Relation of gibberellic acid-induced growth of wheat coleoptiles with indole acetic acid

1984 ◽  
Vol 179 (1-2) ◽  
pp. 123-128 ◽  
Author(s):  
K.K. Chattopadhyay ◽  
R.N. Bhattacharyya ◽  
P.S. Basu
Keyword(s):  
Acetic Acid ◽  
Gibberellic Acid ◽  
Indole Acetic Acid

scholarly journals Pathogenicity and Detection of Phytohormone (Gibberellic Acid and Indole Acetic Acid) Produced by Fusarium spp. that Causes Twisted Disease in Shallot

2021 ◽  
Vol 5 (1) ◽  
pp. 24
Author(s):  
Ayu Lestiyani ◽  
Arif Wibowo ◽  
Siti Subandiyah
Keyword(s):  
Acetic Acid ◽  
Gibberellic Acid ◽  
Thin Layer ◽  
Indole Acetic Acid ◽  
Disease Incidence ◽  
Fusarium Species ◽  
Pathogenicity Test ◽  
Fusarium Spp ◽  
Bulb Rot ◽  
Layer Chromatography

The twisted disease is one of the essential diseases in shallots caused by Fusarium spp. This study aimed to study pathogenicity and identify Fusarium species isolated from shallot plants with twisted symptoms in Nganjuk and Bantul areas. The Fusarium isolates were identified and then tested for pathogenicity levels and the effect of the hormones GA3 and IAA on shallot symptoms. Molecular identification using NF2 and NF4 successfully identified one isolate of Fusarium oxysporum, three isolates of F. acutatum, and three isolates of F. solani. Each of these species produces different symptoms. Pathogenicity test showed that all isolates had disease incidence reaching 100%, except isolates of F. solani1 causing wilt and F. solani3 causing twisted have the lower disease incidence were 77.8% and 77.7%, respectively. The investigation caused twisted shallot related to different symptoms was tested using the Thin Layer Chromatography (TLC) method. The result indicates that all isolates did not find IAA hormone. In contrast, the hormone GA3 was found in F. solani2 and F. solani3 isolates, caused bulb rot and twisted disease, respectively. Detection of IAA, GA3, and other hormones in shallot plants showed different symptoms should be studied further.

scholarly journals COMPARISON OF VARIOUS CHEMICAL TREATMENTS TO BREAK DORMANCY OF GLADIOLUS CORMS

2021 ◽  
pp. 1-9
Author(s):  
Yasar Sajjad
Keyword(s):  
Acetic Acid ◽  
Salicylic Acid ◽  
Gibberellic Acid ◽  
Growth Regulators ◽  
Indole Acetic Acid ◽  
Potassium Nitrate ◽  
Chemical Treatments ◽  
Dark Conditions ◽  
Short Time

Gladiolus is commercially propagated through corms and occurrence of dormancy in freshly harvested corms creates hindrance in their cultivation. Present study was designed to compare the effect of different chemicals to alleviate the dormancy of corms in a short time. Gladiolus corms were collected from two growing sites and subjected to chemicals methanol, benzylaminopurine (BAP), gibberellic acid (GA3), indole acetic acid (IAA), salicylic acid, potassium nitrate and thiourea at different concentrations alone or in combinations. The treated corms were planted on sand and placed under dark conditions at 26°C. The treatment of 60% methanol in combination with 0.9 mM BAP showed maximum germination (72.71%). Descaled corms showed 85% germination compared to 60.42% scaled corms, while the corms collected from Faisalabad showed better germination 83.75% compared to corms from Rawalakot (61.67%). The application of 60% methanol also induced 29.65% and 42.43% deterioration in scaled and descaled corms, respectively. The treatments of 0.3 mM BAP in combination with 0.6 mM GA3 exhibited 88.33 % germination in corms collected from Faisalabad as compared to 55% in corms from Rawalakot. Overall, application of BAP and GA3 in combination was found effective in shortening the period of dormancy in both cultivars of gladiolus compared to other tested chemicals or growth regulators.

scholarly journals Synergistic Effect of Indole Acetic Acid and Gibberellic Acid on Mung Bean Grown under Sandy Soil Conditions

2019 ◽  
Vol 19 (7) ◽  
pp. 718-724 ◽  
Author(s):  
Mohamed Farouk El Karamany ◽  
Mervat Shamoon Sadak ◽  
Bakry Ahmed Bakry
Keyword(s):  
Acetic Acid ◽  
Synergistic Effect ◽  
Gibberellic Acid ◽  
Sandy Soil ◽  
Mung Bean ◽  
Indole Acetic Acid ◽  
Soil Conditions
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