Factors affecting the extractability and MAK chromatography of nucleic acids from woody plant tissue

1971 ◽  
Vol 10 (8) ◽  
pp. 1733-1743 ◽  
Author(s):  
L.V. Gusta ◽  
C.J. Weiser
Keyword(s):  
Nucleic Acids ◽  
Plant Tissue ◽  
Woody Plant ◽  
Factors Affecting

Factors Affecting Toxicity and Translocation of Glyphosate in Cotton(Gossypium hirsutum)

Weed Science ◽  
1978 ◽  
Vol 26 (5) ◽  
pp. 509-513 ◽  
Author(s):  
G. D. Wills
Keyword(s):  
Relative Humidity ◽  
Gossypium Hirsutum ◽  
Constant Temperature ◽  
Environmental Conditions ◽  
Plant Tissue ◽  
Fold Increase ◽  
Herbicide Application ◽  
Factors Affecting ◽  
Treated Area ◽  
Lower Stem

Toxicity of nonradiolabeled and translocation of14C-labeled glyphosate [N-(phosphonomethyl)glycine] in cotton(Gossypium hirsutumL.) were evaluated under different environmental conditions as affected by surfactant and by the maturity of the plant tissue at the place of herbicide application. Toxicity was affected primarily by temperature with 21 to 40% greater cotton injury at 25 C than at 35 C. The addition of surfactant often increased toxicity under environmental conditions where toxicity was initially low. Absorption and translocation of14C was affected primarily by relative humidity (RH). At constant temperature and rate of surfactant, an increase in RH from 40 to 100% resulted in a 3- to 6-fold increase in translocation of14C. Autoradiograms indicated that the movement of the14C-label was primarily into leaves above the treated area. Translocation of14C was significantly greater following application to the mature lower stem than to the mature lower leaves or to immature upper stem or leaves of cotton.

INJURY TO ACTIVE METABOLISM IN WOODY PLANT TISSUE ASSESSED BY 86Rb (K ANALOGUE) UPTAKE AND ELECTRICAL CAPACITANCE TECHNIQUES

1989 ◽  
Vol 69 (4) ◽  
pp. 1273-1276
Author(s):  
DWAYNE ANDREWS ◽  
DAVID FENSOM
Keyword(s):  
Plant Tissue ◽  
Woody Plants ◽  
Woody Plant ◽  
Ion Uptake ◽  
Electrical Capacitance ◽  
Tissue Viability ◽  
Active Metabolism ◽  
Uptake Test

Using 86Rb as an analogue for K+, the uptake of K-ions in 15 mg during one hour in labelled KCl (1 mmolar) solution has been found to be very significantly different in tissue from living twigs of woody plants compared with that from dead twigs. This uptake test has been successfully applied to twigs and discriminates among living, damaged and killed tissue. A modification can assess damage to buds. Ion uptake results supplement the results of electrical cambial capacitance, measured at temperatures 10–25 °C.Key words: Tissue, viability, ion uptake

FURTHER OBSERVATIONS ON THE RELATIONSHIP BETWEEN WINTERHARDINESS IN ROSES AND THE ELECTRIC IMPEDANCE OF UNINJURED TISSUES

1970 ◽  
Vol 50 (4) ◽  
pp. 493-497 ◽  
Author(s):  
FELICITAS SVEJDA
Keyword(s):  
Plant Tissue ◽  
Woody Plant ◽  
Electric Impedance ◽  
Rosa Rugosa ◽  
Maternal Parent ◽  
Growing Period ◽  
The Relationship

The magnitude of the electric impedance of woody plant tissue was not found to be indicative of winterhardiness, when measured on uninjured tissues during the growing period. This was shown by comparing the impedances between (a) hardy Rosa rugosa cultivars and tender R. chinensis cultivars, (b) R. rugosa cultivars of different hardiness levels of different parentage, and (c) seedlings of different hardiness levels but with a common maternal parent. The disagreement of these results with results of other workers is discussed.Earlier findings which indicated that the magnitude of the electric impedance characterizes certain plant genotypes were confirmed.

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