Regulation of androgenesis inNicotiana tabacum L. cv. White Burley andDatura innoxia Mill. Effect of bivalent and trivalent iron and chelating substances

1983 ◽  
Vol 25 (1) ◽  
pp. 5-14 ◽  
Author(s):  
J. Vagera ◽  
P. Havránek
Keyword(s):  
Trivalent Iron ◽  
White Burley

scholarly journals Evaluation the efficiency of different techniques for extraction and purification of Tomato yellow leaf curl virus (TYLCV)

2011 ◽  
Vol 8 (1) ◽  
pp. 447-452 ◽  
Author(s):  
Baghdad Science Journal
Keyword(s):  
Incubation Period ◽  
Tomato Yellow Leaf ◽  
Yellow Leaf ◽  
Nicotiana Glutinosa ◽  
Citrate Buffer ◽  
Extraction And Purification ◽  
Standard Value ◽  
Leaf Curl Virus ◽  
White Burley ◽  
Leaf Curl

This study was conducted to evaluate the efficacy of different techniques for extraction and purification of Tomato yellow leaf curl virus (TYLCV). An isolate of the virus free of possible contamination with other viruses infecting the same host and transmitted by the same vector Bemisia tabaci Genn. was obtained. This was realized by indicator plants and incubation period in the vector. Results obtained revealed that the virus infect Nicotiana glutinosa without visible symptoms, while Nicotiana tabaccum var. White Burley was not susceptible to the virus. The incubation period of the virus in the vector was found to be 21 hrs. These results indicate that the virus is TYLCV. Results showed that Butanol was more effective in clarification the sap and eliminate of plant proteins and chlorophyll. The use of citrate buffer at pH 8 amended with reducing agents and EDTA to prevent the oxidation of phenolic compound was found to be suitable in maintaining the biological activity of the virus during extraction. The quantity of the virus obtained was 3.05 mg/100 gm leaves with absorption ratio of 1.4 at 260/280 nm which represent standard value for TYLCV.

Electrical conduction in trivalent iron molybdates

1984 ◽  
Vol 3 (10) ◽  
pp. 921-924 ◽  
Author(s):  
S. C. Verma ◽  
H. B. Lal
Keyword(s):  
Electrical Conduction ◽  
Trivalent Iron

Coordination of 2,2'-Biimidazole with Iron, Cobalt, Nickel and Copper

1979 ◽  
Vol 32 (3) ◽  
pp. 513 ◽  
Author(s):  
AS Abushamleh ◽  
HA Goodwin
Keyword(s):  
Spectral Data ◽  
High Spin ◽  
Weak Field ◽  
Trivalent Iron ◽  
Iron Cobalt ◽  
Cobalt Nickel ◽  
Bivalent Iron

Complexes of 2,2'-biimidazole with bivalent iron, cobalt, nickel and copper, and trivalent iron are described. The ligand produces a relatively weak field and all complexes are high-spin and markedly less stable than corresponding complexes of 2,2'-bipyridine or 2-(2-pyridyl)imidazole. Inner complexes, M(L-H)2, derived from the monoanion of biimidazole are also described. The complexes are characterized by magnetic and spectral data.

Trivalent Iron Is Responsible for the Yellow Color Development in the Nacre of Akoya Pearl Oyster Shells

2019 ◽  
Vol 22 (1) ◽  
pp. 19-30 ◽  
Author(s):  
Makoto Kakinuma ◽  
Ko Yasumoto ◽  
Michio Suzuki ◽  
Chiaki Kasugai ◽  
Mirai Koide ◽  
...  
Keyword(s):  
Pearl Oyster ◽  
Trivalent Iron ◽  
Color Development ◽  
Yellow Color

Trivalent iron induced gelation in Artemisia sphaerocephala Krasch. polysaccharide

2020 ◽  
Vol 144 ◽  
pp. 690-697 ◽  
Author(s):  
Xiaoxue Yao ◽  
Xiaolin Yao ◽  
Kai Xu ◽  
Kao Wu ◽  
Xiaoyu Chen ◽  
...  
Keyword(s):  
Trivalent Iron ◽  
Artemisia Sphaerocephala
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