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Tag Archives: Ipomoea batatas

Characterization and development of EST-derived SSR markers in cultivated sweetpotato (Ipomoea batatas)

Background: Currently there exists a limited availability of genetic marker resources in sweetpotato (Ipomoea batatas), which is hindering genetic research in this species. It is necessary to develop more molecular markers for potential use in sweetpotato genetic research. With the newly developed next generation sequencing technology, large amount of transcribed …
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Development of cleaved amplified polymorphic sequence (CAPS)-based markers for identification of sweetpotato cultivars

To develop a simple and reliable method to identify sweetpotato cultivars, we designed cleaved amplified polymorphic sequence (CAPS)-based markers and used them to perform genotyping of Japanese sweetpotato cultivars. In order to screen the CAPS-based markers, 13 primer pairs were designed from the exon sequences of 11 sweetpotato genes to …
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Autopolyploidy versus Allopolyploidy and Low-density Randomly Amplified Polymorphic DNA Linkage Maps of Sweetpotato

Low-density randomly amplified polymorphic DNA (RAPD) markers of sweetpotato [Ipomoea batatus (L.) Lam.; 2n = 6x = 90] were constructed from 76 pseudotestcross progenies obtained from ‘Vardaman’ x ‘Regal’. Of 460 primers, 84 generating 196 well-resolved repeatable markers were selected for genetic analysis. ‘Vardaman’ and ‘Regal’ testcross progenies were analyzed …
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Highly polymorphic AFLP markers as a complementary tool to ITS sequences in assessing genetic diversity and phylogenetic relationships of sweetpotato (Ipomoea batatas (L.) Lam.) and its wild relatives

Comparative analyses of genetic diversity and phylogenetic relationships of sweetpotato (Ipomoea batatas (L.) Lam.) and its wild relatives in Ipomoea series Batatas were conducted using amplified fragment length polymorphism (AFLP) and sequence data from the internal transcribed spacer (ITS) region of the ribosomal DNA. Low ITS divergence among thirteen species …
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Evolutionary relationships among morning glories and the wild relatives of sweetpotatoes: Identifying the potential gene pool relevant to Ipomoea batatas

morning glories

This is a two-part presentation: Brief introduction to morning glories, Consider the potential gene pool relevant to sweet potato pre-breeding among the crop wild relatives. The colorful presentation is filled with pictorials on morning glories with detailed explanations on their characteristics and the gene pool relevant to sweetpotato.
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Agro-Facts: Sweet Potato (Ipomoea batatas) Breeding

This manual is for researchers in the Pacific region who are starting sweet potato breeding programmes but lack training and experience in genetics and plant breeding. It is also for researchers and extension workers who are evaluating local and newly introduced sweet potato germplasm. It may also be useful to …
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Release of Two Orange-fleshed Sweetpotato Cultivars, ‘SPK004’ (‘Kakamega’) and ‘Ejumula’, in Uganda

Two orange-fleshed landrace sweetpotato cultivars: ‘SPK004’ (‘Kakamega’) and ‘Ejumula’ were approved for release by the Ugandan Plant Variety Release Committee in Apr. 2004. This is the third lot of sweetpotato cultivars to be officially released by the sweetpotato program in Uganda, the first two being released in 1995 and 1999. ‘Ejumula’ …
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Prevalence and implications of sweetpotato recovery from sweetpotato virus disease in Uganda

Sweetpotato virus disease (SPVD) is the most important disease of sweetpotato in the tropics. It causes yield losses of up to 98% and extinction of elite cultivars. Although there are no reports of immune cultivars, disease recovery phenomenon (a manifestation of some form of resistance) was reported in many vegetatively …
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