Journal article
Chickpea improvement: Role of wild species and genetic markers
Biotechnology and Genetic Engineering Reviews, Vol.25(1), pp.267-314
2008
Abstract
Chickpea is an important grain legume of the semi arid tropics and warm temperate zones, and forms one of the major components of human diet. However, a narrow genetic base of cultivated chickpea (Cicer arietinum L.) has hindered the progress in realizing high yield gains in breeding programs. Furthermore, various abiotic and biotic stresses are the major bottlenecks for increasing chickpea productivity. Systematic collection and evaluation of wild species for useful traits has revealed presence of a diverse gene pool for tolerance to the biotic and abiotic stresses. Relationships among the species of genus Cicer are presented based on crossability, karyotype and molecular markers. The reproductive barriers encountered during interspecific hybridization are also examined. Recent information on genetic linkage maps, comparison of isozymes
The functional markers generated from genic sequence (e.g. ESTs) have definite advantage over the markers generated from anonymous random regions of the genome, because they are completely linked to desired trait alleles (Anderson and Lubberstedt, 2003; Varshney et al., 2005; Buhariwala et al., 2005). At ICRISAT, Buhariwala et al. (2005) have developed an EST library from two very closely related chickpea genotypes (Cicer arietinum). A total of 106 EST-based markers were designed from 477 sequences with functional annotations and tested on C. arietinum. Forty-four EST markers were polymorphic when screened across nine Cicer species (including the cultivated species) and were used to study the species relationship. Most of the species clustered as reported in the previous studies, and hence it further supported the classification of primary (C. arietinum, C. echinospermum and C. reticulatum), secondary (C. pinnatifidum, C bijugum and C. judaicum), and tertiary (C. yamashitae, C. chrossanicum and C. cuneatum) gene-pools. A large proportion of EST alleles (45%) were only present in one or two of the accessions tested whilst the others were represented in up to twelve of the accessions tested.
Details
- Title
- Chickpea improvement: Role of wild species and genetic markers
- Authors/Creators
- R. Singh (Author/Creator)P. Sharma (Author/Creator)R.K. Varshney (Author/Creator)S.K. Sharma (Author/Creator)N.K. Singh (Author/Creator)
- Publication Details
- Biotechnology and Genetic Engineering Reviews, Vol.25(1), pp.267-314
- Publisher
- Taylor & Francis
- Identifiers
- 991005540730007891
- Murdoch Affiliation
- Murdoch University
- Language
- English
- Resource Type
- Journal article
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- 3 Agriculture, Environment & Ecology
- 3.4 Crop Science
- 3.4.96 QTL
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