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Genetic Diversity in Xanthosoma Based on Morphological Traits,RAPD and SSR
|關鍵字:||genetic diversity;逢機增殖多型性;germplasm;RAPD;Xanthosoma;芋;種源;遺傳相似度||Project:||Horticulture NCHU, Volume 30, Issue 1, Page(s) 39-50.
興大園藝, Volume 30, Issue 1, Page(s) 39-50.
The genetic diversity of 14 Xanthosoma accessions were evaluated by morphological traits and RAPD (randomly amplified polymorphic DNA), The morphologies among accesssions were indistinguishable except colors of leaf blades, leaf veins, petioles corm shape, colors of buds and flesh of KCX001 and 002 accessions. The KCX002 accessions was lost during plantation. The rest were clustered into 3 groups by UPGMA cluster analysis with genetic similarity 0.70~0.87. KCX001 was the only accession in 3rd group wuth similarity 0.70. The 2nd group included KCX003, 005,006,007 and 0.13 with similarity 0.87.
Twenty-nine out of 88 primers that amplified reproducible polymorphic band were selected for RAPD analysis. The polymorphism was 42.3％ with an average of 2.8 polymorphic bands per primer. The cluster analysis result 3 groups with KCX002 comprised the first with genetic similarity 0.64. KCX001 was the only accession in 3rd group. The other accessions had high genetic similarity values of 0.99 and comprised3d the 2nd group. The result reflected that many of Xanthosoma accessions in this study were actually duplicates.
|Appears in Collections:||第30卷 第01期|
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