Cytogenetic studies on the F1 hybrid Solanum incanum L. x Solanum melongena L. variety ‘Giant of Banaras’
ABSTRACT This paper presents a morphological and cytogenetic account of Solanum incanum, S. melongena variety Giant of Banaras and their F1 hybrid. A close inter-relationship between the two species is recognized and hybrid vigour for height of plant and number of branches, flowers and fruits as well as for resistance against drought and fruit and shoot borers is demonstrated.
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ABSTRACT: Random amplified polymorphic DNA (RAPD) technique was used as a tool for assessing genetic diversity and species relationships among 28 accessions of eggplant representing five species. Twenty-eight samples of eggplants were collected from different parts of the country. A total of 144 polymorphic amplified products were obtained from 14 decamer primers, which discriminated all the accessions. The value of Jaccard’s coefficient ranged from 0.05 to 0.82. The similarity result indicates presence of high level of genetic diversity in eggplants and a dendrogram constructed by UPGMA method shows that S. incanum is closest to S. melongena followed by S. nigrum. Only one accession of S. nigrum and S. surattense was taken in the present study that showed grouping with each other. Genetically distinct genotypes identified using RAPD markers could be potential sources of germplasm for eggplant improvement.Current science 01/2006; · 0.91 Impact Factor
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ABSTRACT: Solanum L., the largest genus of the Solanaceae family, vary morphologically, is diverse in number and is ecogeographically distributed. In Nigeria, previous studies had focused mainly on chromosome morphology, genome description and medicinal values, which are insufficient for genetic affinities. This study used four highly polymorphic random amplified polymorphic DNA primers to describe both the genetic relatedness and variability among 25 accessions of eggplant from Southwestern Nigeria. At a truncated line of 65%, five clusters and two ungrouped samples are distinguishable from the dendrogram. The data reveals that Solanum dasyphyllum Schum. & Thonn. is more closely related to Solanum macrocarpon L. than to Solanum melongena L. The relatedness between Solanum incanum L. and Solanum melongena, a probability of being progenitors from a common ancestral lineage was also shown. Occurrence of Solanum scabrum L. and Solanum nigrum L. in the same clusters different from S. melongena, is an indication of distant relatedness to S. melongena but close relatedness between them. High level of polymorphism was observed in this study going by the coefficient of variation which exhibited a good separation from a conserved region of the genome. This study, therefore, reveals a wide and diverse genetic base in Nigerian eggplant Solanum. Key words: Eggplant, genome, synonymy, polymorphism, phylogenetic.International Journal of Genetics and Molecular Biology 01/2014; 6(1):1 - 7.