Action of gibberellic acid in effecting phase shifts of the circadian leaf-movement rhythm of a cotton plant, Gossypium hirsutum

1983 ◽  
Vol 61 (10) ◽  
pp. 2527-2529 ◽  
Author(s):  
N. Viswanathan ◽  
R. Subbaraj
Keyword(s):  
Gibberellic Acid ◽  
Gossypium Hirsutum ◽  
Cotton Plant ◽  
Phase Shifts ◽  
Synergistic Action ◽  
Leaf Movement ◽  
Background Illumination ◽  
Apparent Absence ◽  
Circadian Leaf Movement

Pulses of gibberellic acid (GA3) offered at various phases of circadian leaf-movement rhythms in the cotton plant, Gossypium hirsutum, effected advance phase shifts of varying magnitude. Neither the quality nor the amount of these phase shifts was altered by the background illumination, suggesting an apparent absence of synergistic action of the light and gibberellic acid.

A Microradioautographic Study of 14C-Diuron Absorption by Cotton

Weed Science ◽  
1971 ◽  
Vol 19 (4) ◽  
pp. 355-362 ◽  
Author(s):  
R. H. Strang ◽  
R. L. Rogers
Keyword(s):  
Gossypium Hirsutum ◽  
Cotton Plant ◽  
Freeze Drying ◽  
Effective Concentration ◽  
Transpiration Stream ◽  
Pigment Glands

The techniques of cryostat sectioning, freeze-drying, and microradioautography were adapted to study the absorption and translocation of radio-labeled 3-(3,4-dichlorophenyl)-1,1-dimethylurea (14C-diuron) in root-treated cotton (Gossypium hirsutum L., var. Coker 201) plants. Diuron appeared to move primarily in the apoplast and to be transported acropetally and laterally in the transpiration stream. Radioactivity was observed to accumulate in striking concentrations in the lysigenous, or pigment, glands and the trichomes of the cotton plant. This accumulation is postulated to be a major factor in lowering the effective concentration of the herbicide in the leaves of cotton as compared to leaves of more susceptible plants, and thus may be a significant factor in the tolerance of cotton to diuron.

Effects of Organic Arsenical Herbicides on Cotton Response and Chemical Residues

Weed Science ◽  
1969 ◽  
Vol 17 (1) ◽  
pp. 37-40 ◽  
Author(s):  
R. S. Baker ◽  
H. F. Arle ◽  
J. H. Miller ◽  
J. T. Holstun
Keyword(s):  
Gossypium Hirsutum ◽  
Cotton Plant ◽  
Topical Application ◽  
Field Experiments ◽  
Arsenic Content ◽  
Stages Of Growth ◽  
Chemical Residues ◽  
Coverage Rates ◽  
Methods Of Application ◽  
Topical Applications

The influence of timing and method of application of sodium or disodium salts of methanearsonic acid (MAA) on cotton (Gossypium hirsutum L.) response, arsenic content of seed, and arsenic content of soils, was studied in field experiments in California, Arizona, and Mississippi. Methods of application consisted of directed and topical sprays. Directed sprays were applied to cover the small weeds in the drill row with a minimum of contact on cotton leaves more than 2 to 3 inches above the ground. Topical sprays were applied from nozzles positioned over the cotton in such a way that the entire cotton plant was subject to coverage. Rates of application were either 2 or 3 lb/A of the salts, and either two or three applications were made to treated plots. Cotton appeared highly tolerant to directed applications. A topical application to cotton 2 to 4 inches slightly reduced yields, but topical applications made at later stages of growth caused progressively severe reductions in yields and delayed maturity. The arsenic content of cottonseed from treated plots was not significantly higher than in that from untreated checks providing that applications were restricted to prebloom stages. Either directed or topical applications made during the blooming stage resulted in detectable increases of arsenic in the cottonseed. The effect of the treatments on arsenic content of soils was relatively small in comparison with natural levels, but the effect was detectable at one of the three locations.

Phase Shifting Effect of Caffeine in the Circadian Rhythm of Phaseolus coccineus L

1975 ◽  
Vol 30 (11-12) ◽  
pp. 855-856 ◽  
Author(s):  
W. Mayer ◽  
I. Scherer
Keyword(s):  
Circadian Rhythm ◽  
Phaseolus Coccineus ◽  
Phase Shifting ◽  
Leaf Movement ◽  
Circadian Leaf Movement

Abstract Caffeine, Circadian Rhythm, Sleep and Wakefulness, Phaseolus coccineus L. 4-hour caffeine pulses (10 mᴍ) offered via the trans­ piration stream advances or delays the phase of the circadian leaf movement rhythm of Phaseolus coccineus as a function of the phase of application. It is hypothesized that the caffeine effect upon sleep and wakefulness in man is partly due to this phase-shifting effect.

scholarly journals Mycoflora of Cotton Plant (Gossypium hirsutum L.) - with three New Records of Deuteromycetes from Bangladesh

2015 ◽  
Vol 39 (2) ◽  
pp. 213-221 ◽  
Author(s):  
Shamim Shamsi ◽  
Najmun Naher ◽  
Rumana Azad
Keyword(s):  
Aspergillus Niger ◽  
Gossypium Hirsutum ◽  
Cotton Plant ◽  
New Record ◽  
New Records ◽  
Gossypium Hirsutum L ◽  
Colletotrichum Dematium ◽  
Fusarium Sp ◽  
Academy Of Sciences ◽  
First Time

Fungal diseases of cotton plant (Gossypium hirsutum L.) were studied during July, 2011 to June, 2012. Eleven cotton varieties were selected for the experiment. Alternaria alternata (Fr.) Keissler, Aspergillus niger van Tiegh, Colletotrichum gossypii Sowthworth, Colletotrichum dematium (Pers.) Grove, Curvularia clavata Jain, Fusarium sp., Gleotrichum sp., Hyalopycnis sp., Pestalotiopsis guepinii (Desm.) Stay, and a sterile fungus were isolated from infected leaves of cotton varieties CB6 and CB11. Colletotrichum gossypii was isolated from both the varieties and C. dematium was exclusively isolated from CB6. Varieties CB6 and CB11 were more susceptible than other varieties. Cotton varieties CB1, CB2, and CB3 showed negligible infection on leaves and bolls. Colletotrichum gossypii and Hyalopycnis sp. are new record for Bangladesh. Moreover, association of C. dematium, Gleotrichum sp., P. guepinii and Hyalopycnis sp. with cotton is being reported first time. The three fungi Colletotrichum. gossypii, C. dematium and Hyalopycnis sp. are described and illustrated in this account as new Deuteromycetous records for Bangladesh.Journal of Bangladesh Academy of Sciences, Vol. 39, No. 2, 213-221, 2015

Evidence that exogenous urea acts as a potent cue to alleviate ammonium‐inhibition of root system growth of cotton plant ( Gossypium hirsutum )

2020 ◽  
Vol 171 (1) ◽  
pp. 137-150
Author(s):  
Lu Liu ◽  
Xin‐Yuan Bi ◽  
Song Sheng ◽  
Yuan‐Yong Gong ◽  
Wen‐Xuan Pu ◽  
...  
Keyword(s):  
Gossypium Hirsutum ◽  
Root System ◽  
Cotton Plant ◽  
Ammonium Inhibition
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