Analysis of genetic diversity of Jackfruit germplasm using ISSR marking method
YE Chun-hai
WANG Yao-hui
LI Ying-zhi
FENG Feng
Abstract：ISSR (inter-simple sequence repeat)markers were used to analyze genetic diversity in 76 accessions of jackfruit (Artocarpus heterophyllus Lain.). Among 477 bands produced by 24 ISSR primers, 427 were polymorphic (accounted for 89.52%). The average PIC (pelymorphism information content) was 0.23. These 76 jackfruit accessions could be discriminated by the 24 ISSR primers. Genetic distance analysis revealed that, low genetic diversity existed in the jackfruit germplasm studied, and the genetic similarity coefficient ranged from 0.626 to 0.945, with an average of 0.775. Cluster analysis showed that 4 groups could be clustered at a genetic distance coefficient of 0.752. The results indicated that, 2 accessions from Tropical Plant Garden, WJ2 and GSYWJ1, were genetically different from other accessions. Accessions of soft flesh type and firm flesh type could not be discriminated. Accessions collected from different sources could form independent clusters, while accessions collected from different areas of Leizhou peninsula could not form independent clusters.
Keywords：JackfruitGermplasm resourcesGenetic diversityISSR
Publication Date：2009-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 659-665 )