Isozyme polymorphism and phylogenetic interpretations in the genus Cicer L. |
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| Authors: | F. Ahmad P. M. Gaur A. E. Slinkard |
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| Affiliation: | (1) Department of Agronomy, University of Illinois, Turner Hall, 1102 S. Goodwin Ave., 61801 Urbana, IL, USA;(2) Department of Plant Breeding and Genetics, J.N. Agricultural University, 482004 Jabalpur, MP, India;(3) Department of Crop Science and Plant Ecology, University of Saskatchewan, S7N 0W0 Saskatoon, Saskatchewan, Canada |
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| Abstract: | Summary Allozyme variation among 50 accessions representing the cultivated chickpea (Cicer arietinum L.) and eight wild annual Cicer species was scored and used to assess genetic diversity and phylogeny. Sixteen enzyme systems revealed 22 putative and scorable loci of which 21 showed polymorphism. Variation was prevalent between species (Dst = 0.510) but not within species (Hs = 0.050). No variation for isozyme loci was detected in the cultivated chickpea accessions. Cicer reticulatum had the highest proportion of polymorphic loci (0.59) while the loci Adh-2 and Lap were the most polymorphic over all the species accessions. The phylogeny of annual Cicer species, as determined by allozyme data, generally corroborated those based on other characters in previous studies. Cicer arietinum, C. reticulatum and C. echinospermum formed one cluster, while C. pinnatifidum, C. bijugum and C. judaicum formed another cluster. Cicer chorassanicum was grouped with C. yamashitae, whereas C. cuneatum formed an independent group and showed the largest genetic distance from C. arietinum. |
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| Keywords: | Cicer Domestication Electrophoresis Isozymes Species relationships |
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