English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Tools annual

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

The PCR-based DNA amplification fingerprinting (DAF) approach was used to investigate the evolutionary relationships among 30 U.S. sweetpotato cultivars. Phenogram and pairwise similarity matrix based on Jaccard's coefficients showed relationships among U.S. cultivars and their progenitors to be consistent with the pedigree history. The genetic variability of U.S. cultivars was relatively low (compared to a sample of global collection). Many older U.S. cultivars formed a cluster in the principal coordinate analysis, suggesting their narrow genetic base, but new cultivars, such as `Regal' and `Excel', showed greater divergence. Somatic mutants showed close genetic similarity with their wild types and yet distinct in fingerprint profiles (e.g., `Resisto' and `Copper Resisto'; `Redmar' and `Goldmar'). All cultivars showed unique DAF profiles, and thus, the DAF approach enabled cultivar identification. `Centennial' showed high similarity to major U.S. cultivars such as `Jewel' and `Rojo Blanco'. `Regal' and its open-pollinated offspring `Excel' showed high similarity with each other. `Jewel', the most leading sweetpotato cultivar in the United States, clustered closely to its parent `Nugget' (83%). Carver, a selection from a cross `Centennial' × `Jewel', showed 75% similarity with `Jewel' and 63% similarity to `Centennial'. `Scarlet', a mutant of `Jewel', appeared in the same cluster as `Jewel' but showed only 68% similarity. Our results show that DAF may be an useful approach in elucidating evolutionary relationships among sweetpotato cultivars.

GENETIC RELATIONSHIPS AMONG U.S. SWEETPOTATO CULTIVARS ANALYZED BY DNA AMPLIFICATION FINGER-PRINTING