scholarly journals Relationship Between Internal Distribution of Exogenous Auxins and Accelerated Ripening of Banana Fruit

1970 ◽  
Vol 23 (5) ◽  
pp. 1133 ◽  
Author(s):  
M Vendrell
Keyword(s):  
Aqueous Solutions ◽  
Ethylene Production ◽  
Indoleacetic Acid ◽  
Dichlorophenoxyacetic Acid ◽  
Banana Fruit ◽  
Control Fruit ◽  
Accelerated Ripening ◽  
Internal Distribution ◽  
2,4 Dichlorophenoxyacetic Acid

Bananas were dipped in aqueous solutions of 2,4-dichlorophenoxyacetic acid (2,4-D) or indoleacetic acid (IAA) at concentrations ranging from 10-5 to 10-2M. Auxin, in proportion to its concentration, stimulated ethylene production; 10-2M and 1O-3M IAA and all 2,4-D concentrations advanced ripening relative to control fruit. 2,4-D at concentrations of 10-2M, 10-3M, and sometimes 10-4M stimulated the respiratory climacteric immediately after treatment, but ripening of the peel was delayed compared to the pulp.

scholarly journals Reversion of Senescence: Effects of 2,4-Dichlorophenoxyacetic Acid and Indoleacetic Acid on Respiration, Ethylene Production, and Ripening of Banana Fruit Slices

1969 ◽  
Vol 22 (3) ◽  
pp. 601 ◽  
Author(s):  
M Vendrell
Keyword(s):  
Aqueous Solutions ◽  
Ethylene Production ◽  
Indoleacetic Acid ◽  
Dichlorophenoxyacetic Acid ◽  
Banana Fruit ◽  
Unripe Fruit ◽  
2,4 Dichlorophenoxyacetic Acid

Slices cut from green, unripe fruit were treated by infiltration with aqueous solutions of 2,4�dichlorophenoxyacetic acid (2,4�D) and indoleacetic acid (lAA). 2,4.D delayed but increased the size of those peaks in respiration and ethylene production which are induced by cutting; ripening was also delayed. These effects were proportional to concentrations of 2,4.D in the range 1O-LlO-3M. Higher concentrations caused injury.

Herbicide-Induced Ethylene Production: Role of the Gas in Sublethal Doses of 2,4-D

Weed Science ◽  
1968 ◽  
Vol 16 (4) ◽  
pp. 498-500 ◽  
Author(s):  
F. B. Abeles
Keyword(s):  
Carbon Dioxide ◽  
Zea Mays ◽  
Glycine Max ◽  
Ethylene Production ◽  
Competitive Inhibitor ◽  
Inhibitory Effect ◽  
Dichlorophenoxyacetic Acid ◽  
Sublethal Doses ◽  
2,4 Dichlorophenoxyacetic Acid

Ethylene production was stimulated by 2,4-dichlorophenoxyacetic acid (2,4-D) from light-grown corn (Zea mays L., var. XL-15) and soybeans (Glycine max Merr., var. Hawkeye). Ethylene had an inhibitory effect on the growth of corn and soybeans, but a reversal of the ethylene effect could not be clearly demonstrated using the competitive inhibitor, carbon dioxide. Ethylene did not mimic the ability of 2,4-D to cause growth curvatures. It was concluded that ethylene played a role in the activity of sublethal amounts of 2,4-D.

Enhanced adsorption of carbon nanocomposites exhausted with 2,4-dichlorophenoxyacetic acid after regeneration by thermal oxidation and microwave irradiation

2014 ◽  
Vol 1 (2) ◽  
pp. 113-116 ◽  
Author(s):  
Anthony B. Dichiara ◽  
Jordan Benton-Smith ◽  
Reginald E. Rogers
Keyword(s):  
Carbon Nanotubes ◽  
Microwave Irradiation ◽  
Aqueous Solutions ◽  
Thermal Oxidation ◽  
Single Walled Carbon Nanotubes ◽  
Dichlorophenoxyacetic Acid ◽  
Carbon Nanocomposites ◽  
Enhanced Adsorption ◽  
2,4 Dichlorophenoxyacetic Acid ◽  
Walled Carbon Nanotubes

The ability of raw and recycled graphene nanoplatelets–single-walled carbon nanotubes hybrid papers for 2,4-dichlorophenoxyacetic acid adsorption from aqueous solutions was evaluated.

Influence of Time and Method of Application on Turkey Oak Response to Picloram + 2,4-D

Weed Science ◽  
1969 ◽  
Vol 17 (1) ◽  
pp. 87-91
Author(s):  
H. D. Coble ◽  
R. P. Upchurch ◽  
J. A. Keaton
Keyword(s):  
Aqueous Solutions ◽  
Plant Height ◽  
Growing Season ◽  
Early Spring ◽  
Dichlorophenoxyacetic Acid ◽  
Leaf Stage ◽  
Turkey Oak ◽  
Degree Of Control ◽  
Application Methods ◽  
2,4 Dichlorophenoxyacetic Acid

Naturally-established turkey oak (Quercus laevis Walt.) shoots were treated with aqueous solutions of the product picloram + 2,4-D (4-amino-3,5,6-trichloropicolinic acid + 2,4-dichlorophenoxyacetic acid) and with picloram pellets. Various application methods were utilized at several dates during the year. Responses measured 14 and 17 months after initial treatments were percent control of original shoots, percent regrowth, plant height, and live stems/plant. Leaf-stem-basal treatments provided the highest degree of control of any method studied, averaging 87% total shoot control over five treatments dates. Foliar, mist-blower, and leaf-stem applications showed no differences, averaging 75%, 79%, and 78% control, respectively. Basal applications gave poorest results averaging only 12% control over five dates. No differences were observed among treatment dates for applications made during the growing season after the full-leaf stage, but treatments made before full-leaf provided less control than others. Soil applications of picloram pellets were more effective when applied during the early spring and summer than during fall or winter but were less effective than treatments applied to foliage at all dates.

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