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In large ex situ germplasm collections, such as that maintained at CIAT for cassava, it is common to observe duplicates. The presence of duplicate clones increases the cost of conservation without contributing to representation or the available genetic base for crop improvement. To identify group...


Ocampo Nahar, César H.Angel, F.Jiménez, A.Jaramillo O, GHershey, Clair H.Granados F, EIglesias, C.A.[DNA fingerprinting to confirm possible genetic duplicates in cassava germplasm]DNA fingerprinting to confirm possible genetic duplicates in cassava germplasm

Esterase isozymes were chosen for fingerprinting CIAT`s cassava germplasm colleciton, because of (1) their technical repeatability; (2) high polymorphism (i.e., many alleles per locus); and (3) high numner of bands detectable in cassava clones (i.e., at least a few loci are expressed). A total of...


Ocampo Nahar, César H.Hershey, Clair H.Iglesias, C.A.Iwanaga, Masaru[Esterase isozyme fingerprinting of the cassava germplasm collection held at CIAT]Esterase isozyme fingerprinting of the cassava germplasm collection held at CIAT

Genetic studies of two isozyme loci have been carried out in root tips of eight cassava F1 progenies using polyacrylamide gel electrophoresis. Two loci, esterase-1 (East-1), the most distant cationic region, and glutamate oxaloacetate transaminase-1 (Got-1), the most proximal anionic region, were...


Sarria, RAOcampo Nahar, César H.Ramírez, H.Hershey, Clair H.Roca, William M.[Genetics of esterase and glutamate oxaloacetate transaminase isozymes in cassava (Manihot esculenta Crantz)]Genetics of esterase and glutamate oxaloacetate transaminase isozymes in cassava (Manihot esculenta Crantz)

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