Abstract
Characterizing the various genotypes of watermelons (Citrullus lanatus) is an important step to manage effectively the use of genotype resources. The aim of this work is to determine the level of genetic diversity among different landraces of Palestinian watermelon using RAPD molecular markers. For this, 14 RAPD primers were used to amplify the DNA extracted from 8 watermelon landraces. The banding pattern from RAPD analysis was scored visually for each primer and the data matrix was developed for UPGMA-based cluster analysis. Using the Nei and Li distance coefficients, cluster analysis was performed. Marker index and polymorphic information content as well as resolving power was calculated for all the markers. Twelve RAPD markers produced various banding patterns and revealed polymorphic bands of which 52 (94.6%) bands were polymorphic and 3 (0.035%) were monomorphic. The highest percentage of polymorphic markers was 100% and the lowest was 60%. The genotypes were mainly divided into two clusters based on the dendrogram derived from RAPD data. Cluster-I, which has two sub-clusters, included seven genotypes, sub-cluster-I.a contained only two genotypes (UB-199–11 and UB-510–20), and sub-cluster-I.b included two groups containing in which genotypes UB-402–19 and UB-578–21-2 represented in group 1 and genotypes UB-307–18-2, UB-377–19, and UB-578–21-1 represented in group 2. Cluster-II contained only one genotype accession (UB-307–18-1). Based on 12 RAPD, the similarity coefficients of Watermelon genotypes ranged from 0.31 to 0.82.
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Abbreviations
- FAO:
-
Food and Agriculture Organization
- AFLP:
-
Amplified fragment length polymorphism
- SSR:
-
Simple sequence repeat
- EST-SSR:
-
Expressed sequence tags-SSRs
- SNP:
-
Single nucleotide polymorphism
- RAPD:
-
Random amplified polymorphic DNA
- UWAC:
-
Union of Agricultural Work Committees
- PCR:
-
Polymerase chain reaction
- UPGMA:
-
Unweighted Pair Group Method with Arithmetic Average
- MVSP:
-
Multi variate statistical package
- MI:
-
Marker index
- PIC:
-
Polymorphic information content
- RP:
-
Resolving power
- NB:
-
Number of bands
- NPB:
-
Number of polymorphic bands
- NMB:
-
Number of monomorphic bands
- PPB:
-
Percentage of polymorphic bands
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Acknowledgements
The authors are thankful to the Union of Agricultural Work Committees (UWAC) for providing the watermelon landraces seeds.
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Yamen Hamdan, Abdalmenem Hawamda and Mazen Salman designed and carried out the study. Laith badran, Estabraq Daraghmeh, Linda Mar’i, Anas Khalaf, Ramiz Maraabeh and Raghda Ibrahim carried out the field and laboratory work. Yamen Hamdan and Rezq Basheer-Salimia carried out the statistical analyses and interpretation of the study. Yamen Hamdan and Abdalmenem Hawamda wrote the first draft of the manuscript. Yamen Hamdan wrote the final draft of manuscript. Yamen Hamdan and Mazen Salman reviewed the final draft. The authors read and approved the final manuscript.
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Significance Statement: Characterizing watermelon genotype is an important step for effective management of genetic resources. Utilizing molecular methods, this study provide valuable insights into the genetic diversity of Palestinian watermelon landraces, essential for conservation and breeding ctivities.
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Hamdan, Y.A.S., Hawamda, A.I.M., badran, L. et al. Exploring Genetic Variations Among Palestinian Watermelon (Citrullus lanatus) Germplasm Using RAPD Molecular Markers. Proc. Natl. Acad. Sci., India, Sect. B Biol. Sci. (2024). https://doi.org/10.1007/s40011-024-01612-5
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DOI: https://doi.org/10.1007/s40011-024-01612-5