scholarly journals The methodology of the electrical conductivity test for Carthamus tinctorius L. seeds

Author(s):  
Ingrid M. H. de L. e Silva ◽  
Givanildo Z. da Silva ◽  
Mirelle V. Coelho ◽  
Gabriela F. Gama ◽  
Amalia A. S. Silva ◽  
...  

ABSTRACT The electrical conductivity test stands out for generating quick responses for lot differentiation; however, studies are needed to improve this practice in safflower seeds. This study aimed to verify the efficiency and establish a methodology of the electrical conductivity test for safflower seeds. Initially, 12 lots were characterized regarding physical properties and physiological potential. For electrical conductivity, the experiment was carried out in three stages with the 12 lots: firstly, the soaking period was determined (2, 4, 6, 8, and 16 hours), then the volume was evaluated (50, 75, 100, 150, and 200 mL), and finally the number of seeds (25 and 50 seeds) was determined. The electrical conductivity test using 25 seeds in 50 mL of distilled water for six hours of soaking enables the differentiation of safflower seed lots. Multivariate analysis of principal components is efficient in discriminating the vigor of safflower seed lots.

Author(s):  
Martín Quintana-Camargo ◽  
Juan Manuel Pichardo-González ◽  
Adriana Natividad Avendaño-López ◽  
Maria Leonor Román-Miranda

For seed storage, a low moisture content index is recommended, while in sowing, a rapid and homogeneous hydrolysis is important to reactivate its metabolism during germination and seedling development. The goal of the study was to establish the effect of pre-conditioning treatments on safflower seed, through the germination and emergence of seedlings. The pre-imbibition treatments were: distilled water, gibberellic acid and a biostimulant based on humic and fulvic acids, in periods of 2, 4, 6 and 8 hours. The seed was produced in spring-summer 2019 and 2020. The results indicate that imbibition of seeds in water by a period of 4 hours was the most effective treatment, showing the highest germination percentages, in addition to presenting a faster and more uniform emergence of seedlings. The pre-conditioning with Gibberellic acid even reduced the germination values and the biostimulant generated homogeneity in the emergence of seedlings


Alloy Digest ◽  
1991 ◽  
Vol 40 (1) ◽  

Abstract ELECTRAFIL G-50/SS/5 provides good electrical conductivity at a low loading of stainless steel fibers. It is useful as a shielding material and for current carrying parts. This datasheet provides information on physical properties, and tensile properties as well as fracture toughness. Filing Code: Cp-13. Producer or source: AKZO Engineering Plastics.


Alloy Digest ◽  
1972 ◽  
Vol 21 (12) ◽  

Abstract COPPER No. 120 is a phosphorus deoxidized copper in which the residual phosphorus is maintained at a low level to acheive a good electrical conductivity. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and shear strength as well as fatigue. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Cu-263. Producer or source: Copper and copper alloy mills.


Alloy Digest ◽  
1978 ◽  
Vol 27 (7) ◽  

Abstract Copper Alloy No. 314 is a copper-zinc-lead alloy with moderate strength and good ductility. It has good electrical conductivity, excellent machinability and a rich bronze color. Its uses include electrical connectors, screw-machine parts and builders' hardware. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and shear strength. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Cu-357. Producer or source: Brass mills.


Alloy Digest ◽  
1977 ◽  
Vol 26 (5) ◽  

Abstract Copper Alloy No. 815 is an age-hardenable cast copper-chromium alloy. It is characterized by high electrical and thermal conductivities combined with medium hardness and strength in the age-hardened condition. It is used for components requiring high electrical conductivity or high thermal conductivity. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as casting, heat treating, machining, and joining. Filing Code: Cu-332. Producer or source: Copper alloy foundries.


Alloy Digest ◽  
2003 ◽  
Vol 52 (8) ◽  

Abstract Miller alloy MHP 101 has excellent cold working properties. The alloy is used for its combination of strength, relaxation resistance, electrical conductivity, and good formability. It is used as connectors and springs. This datasheet provides information on composition, physical properties, elasticity, and tensile properties. It also includes information on forming, heat treating, and joining. Filing Code: CU-706. Producer or source: The Miller Company.


Alloy Digest ◽  
2002 ◽  
Vol 51 (12) ◽  

Abstract Wieland-M15 is copper-zinc alloy with good electrical conductivity and a red color useful in decorative applications. The alloy has also been called red brass, 85%, and CA 230. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and bend strength. It also includes information on corrosion resistance as well as forming, heat treating, and joining. Filing Code: CU-694. Producer or source: Wieland Metals Inc., Wieland-Werke AG.


Alloy Digest ◽  
1979 ◽  
Vol 28 (12) ◽  

Abstract ANACONDA Alloy (E) 505 is a low-tin phosphor bronze with excellent resistance to corrosion, excellent ductility and good resistance to fatigue. It has good thermal and electrical conductivity. Its uses include flexible metal hose, electrical contacts, fuse clips and fasteners. This datasheet provides information on composition, physical properties, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Cu-385. Producer or source: Anaconda American Brass Company.


Alloy Digest ◽  
2008 ◽  
Vol 57 (10) ◽  

Abstract Swissmetal alloys C97 and C98 attain high strength by aging after cold working. The alloys are free machining and maintain a high electrical conductivity. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: CU-759. Producer or source: Avins Industrial Products.


Alloy Digest ◽  
1984 ◽  
Vol 33 (10) ◽  

Abstract Copper Alloy No. C19200 is a high-copper alloy with relatively high strength and electrical conductivity. It has good hot forgeability and good capacity for being cold worked. Among its many uses are applications requiring resistance to softening and stress corrosion, automotive hydraulic brake lines, cable wrap, eyelets, flexible hose and fuse clips. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Cu-485. Producer or source: Copper and copper alloy mills.


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