Decomposition of 2-chloroethylphosphonic acid (Ethephon) was studied in dried films at various water vapor pressures (0.6 to 86.9 millimeters Hg, 3.2 to 93.9% relative humidity) and temperatures (20, 30, 40, and 50 C) at pH 6.3 and 7.0. The rate of decomposition could be determined equally well by [(14)C]Ethephon or ethylene measurements. The rate increases at increasing water vapor pressures a...

The effects of ethylene evolved from ethephon on leaf and whole plant photosynthesis in Xanthium strumarium L. were examined. Ethylene-induced epinasty reduced light interception by the leaves of ethephon treated plants by up to 60%. Gas exchange values of individual, attached leaves under identical assay conditions were not inhibited even after 36 hours of ethylene exposure, although treated l...

Control clumps of Selaginella wallacei Heiron., sprayed with distilled water with Tween 20, produced a high proportion of microsporangia. Similar clumps sprayed with 2-chlorethyl-phosphonic acid, and ethylene-releasing compound (Ethephon), at 7.65 and 76.5 mg/liter produced almost exclusively megasporangia. Treatment of Selaginella pallescens (Presl) Spring with Ethephon at 34 mg/liter caused t...

Preand post-harvest physiology and quality responses of green pepper (Capsicum annuum L. cv ‘Standar p.13/0211003-01-Agris’) on exogenous Gibberellic acid-GA3 (100 μM), ProhexadioneCalcium (100 mg l), Cycocel (100 mg l) and Ethephon (100 mg l) applied as foliar sprays, were investigated. Among PGRs, GA3 @ 100μM was effective in promoting flowering and better for vegetative characteristics. Chlo...

generally, fruit trees should produce sufficient yield annually through their economic life. fruit trees usually produce flowers over their ability of productivity. if all of the flowers are converted to fruit, the tree will be weak and poor smaller fruit will be produced and it may cause alternate bearing. thus some flowers must be removed by hand, mechanically or chemically. in this study, th...

The effect of ethylene regulation on a-farnesene biosynthesis in preclimateric ‘Delicious’ and ‘Granny Smith’ apples was studied using an ethylene inducer and inhibitor, a-farnesene biosynthesis precursors, and protein transcription and translation inhibitors. a-Farnesene was not detectable when internal ethylene concentrations were less than 1 ml l. Correlations between internal ethylene and a...

In order to ascertain the stomatal and photosynthetic responses of mustard to ethylene under varying N availability, photosynthetic characteristics of mustard grown with optimal (80 mg N kg(-1) soil) or low (40 mg N kg(-1) soil) N were studied after the application of an ethylene-releasing compound, ethephon (2-chloroethyl phosphonic acid) at 40 days after sowing (DAS). The availability of N in...

Abstract The objective of this work was to evaluate the effect pre-harvest spraying with aminoethoxyvinylglycine (AVG) and ethephon on fruit maturation 'Baigent' apple (Malus domestica) trees grown under black anti-hail nets. treatments were: control; 125 mg L-1 AVG, sprayed 30 days before anticipated harvest time (DBAH); 120 7 DBAH; 62.5 + AVG 20 DBAH DBAH. Fruit were harvested in commercial c...

Cyclanilide [1-(2,4-dichlorophenylaminocarbonyl)-cyclopropane carboxylic acid] is a plant growth regulator that is registered for use in cotton at different stages of growth. It can be used to suppress vegetative growth when used in combination with mepiquat chloride; or it can enhance defoliation and boll opening when used in combination with ethephon. To understand how cyclanilide affects the...