Functional genomics in chickpea: an emerging frontier for molecular-assisted breeding

Coram, Tristan E.; Mantri, Nitin; Ford, Rebecca; Pang, E. C. K.

doi:10.1071/fp07169

Cited by 14 publications

(8 citation statements)

References 99 publications

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“…The second reason could be due to pleiotropy, namely that the two respective phenotypes (grain weight and lutein concentration) are in fact controlled by the same gene loci. With the current status of the chickpea genetic map it is impossible to decide between these two genetic alternatives (Coram et al 2007). Understanding the true situation may increase the efficiency of breeding efforts to enhance chickpea grain lutein concentration.…”

Section: Discussionmentioning

confidence: 99%

Towards enhancing lutein concentration in chickpea, cultivar and management effects

Abbo¹,

Bonfil

Kerem

et al. 2010

Plant Breeding

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Staple food fortification is a rational and economic way to improve the health status of poor income consumers. Lutein is an important antioxidant, and its intake is associated with lower risk of macular degeneration (blindness). We studied the scope to improve lutein concentration in chickpea grains by routine farming practices including tillage, and phosphorus and potassium fertilization. In addition, the association between lutein concentration and grain weight was investigated. The genetic (cultivar) effect on lutein concentration greatly exceeded the husbandry effects. High-lutein concentration in chickpea grains was recessive to low-lutein concentration. High-lutein concentration in the studied material was associated with low-grain weight, similar to results obtained from crosses involving wild chickpea. Breeding large seeded chickpea with enhanced lutein concentration may be difficult due to the association of lutein promoting alleles with low-grain weight alleles. However, our results confirm that chickpea grain lutein concentration trait is relatively stable, due to strong genetic control. Therefore, high-lutein cultivars are likely to maintain their performance even when grown under diverse field conditions.

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Section: Discussionmentioning

confidence: 99%

Towards enhancing lutein concentration in chickpea, cultivar and management effects

Abbo¹,

Bonfil

Kerem

et al. 2010

Plant Breeding

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“…Functional genomics includes several parallel approaches and tools such as EST generation, transcript profiling and reverse/forward genetics (Coram et al . 2007).…”

Section: Genetics and Plant Improvementmentioning

confidence: 99%

Salt sensitivity in chickpea

Flowers

Gaur

Gowda

et al. 2010

Plant Cell & Environment

222

134

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The growth of chickpea (Cicer arietinum L.) is very sensitive to salinity, with the most susceptible genotypes dying in just 25 mM NaCl and resistant genotypes unlikely to survive 100 mM NaCl in hydroponics; germination is more tolerant with some genotypes tolerating 320 mM NaCl. When growing in a saline medium, Cl -, which is secreted from glandular hairs on leaves, stems and pods, is present in higher concentrations in shoots than Na + . Salinity reduces the amount of water extractable from soil by a chickpea crop and induces osmotic adjustment, which is greater in nodules than in leaves or roots. Chickpea rhizobia show a higher 'free-living' salt resistance than chickpea plants, and salinity can cause large reductions in nodulation, nodule size and N2-fixation capacity. Recent screenings of diverse germplasm suggest significant variation of seed yield under saline conditions. Both dominance and additive gene effects have been identified in the effects of salinity on chickpea and there appears to be sufficient genetic variation to enable improvement in yield under saline conditions via breeding. Selections are required across the entire life cycle with a range of rhizobial strains under salt-affected, preferably field, conditions.

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“…Chickpea is a diploid plant with an estimated haploid genome size of about 740 Mb and 2n=2x=16 chromosomes (Arumuganathan and Earle 1991;Coram et al 2007). In addition to the importance of this crop for the poor, it is also an important food for the affluent populations to alleviate major foodrelated health problems (Agharkar 1991;Charles et al 2002;McIntosh and Topping 2000).…”

Section: Introductionmentioning

confidence: 99%

Genetic Diversity of Iranian Accessions, Improved Lines of Chickpea (Cicer arietinum L.) and Their Wild Relatives by Using Simple Sequence Repeats

et al. 2011

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Biodiversity information in available germplasm is very useful for the success of any breeding program. To establish genetic diversity among 44 genotypes of chickpea comprising cultigen, landraces, internationally developed improved lines and wild relatives, genetic distances were evaluated using 19 simple sequence repeat markers with 100 marker loci. Estimation of the number of alleles per locus (n a ), the effective allele number (n e ), and Wright fixation index F were 6.25, 3.67, and 0.44, respectively.Polymorphism information content values ranged from 0.84 (locus NCPGR6 and TA135) to 0.44 (locus NCPGR7) with an average of 0.68. Dice's coefficient similarity matrix for studied chickpea genotypes varied from 0.07 to 1.0 indicating a broader genetic base among genotypes studied. The highest similarity, 1.0, was observed between genotypes Sel 96TH11484 and Sel 96TH11485; while, the lowest, 0.07, was observed between genotypes Sel 95TH1716 and Azad. Based on the UPGMA clustering method, all genotypes were clustered in eight groups, which indicated the probable origin and region similarity of landraces and local Iran landraces over the other cultivars and wild species. It also represents a wide diversity among available germplasm. Analysis of molecular variance revealed that 41% of the total variance was due to differences among groups while 59% was due to differences within groups. The results of principal coordinate analysis approximately corresponded to those obtained through cluster analysis. Genetic variation detected in this study can be useful for selective breeding for specific traits and in enhancing the genetic base of breeding programs.

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Functional genomics in chickpea: an emerging frontier for molecular-assisted breeding

Cited by 14 publications

References 99 publications

Towards enhancing lutein concentration in chickpea, cultivar and management effects

Towards enhancing lutein concentration in chickpea, cultivar and management effects

Salt sensitivity in chickpea

Genetic Diversity of Iranian Accessions, Improved Lines of Chickpea (Cicer arietinum L.) and Their Wild Relatives by Using Simple Sequence Repeats

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