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Abstract Detail

Genetics Section

Von Wettberg , Eric [1], Warschefsky, Emily [2], Chang, Peter [3], Berger, Jens [4], Greenspan, Alex [3], Bukun, Bekir [5], Aydogan, Abdulkadir [6], Kahraman, Abdullah [7], Nuzhdin, Sergey [8], Penmetsa, RV [3], Cook, Doug [3].

Population genetics of wild chickpea.

All domesticated species are impacted in unintended, often negative ways during domestication and breeding. Their narrow genetic status derives from random demographic processes and from changes in the nature of selection during breeding and cultivation. Loss of adaptive alleles, fixation of deleterious alleles, and low genetic diversity in cultivated species necessarily constrains our ability to expand the cultivation of domesticated species into environments beyond those under which domestication occurred, e.g., into more extreme climates, marginal soils, or with reduced agricultural inputs. We are addressing this need in chickpea, the world’s second most important pulse legume, by harnessing the capacity of wild relatives to survive in harsh environments. Effective use of wild germplasm in chickpea improvement requires new and systematic surveys of genotypes from natural environments.  Here we examine population genetic variation in a new, expanded collection of wild chickpea, showing substantial variation among and within populations far exceeding previously known variation in chickpea germplasm.  We find several population clusters within the two immediate wild relatives of chickpea, Cicer reticulatum and C. echinospermum that partially track differences in soil substrate, habitat, and elevation.

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1 - Florida International University And Fairchild Tropical Botanic Garden, 11200 SW 8th Street, Biological Sciences, Florida International University, OE 167, 11200 SW 8th Street, Biological Sciences, Florida , Miami, FL, 33199, USA
2 - 7730 SW 65th Pl, South Miami, FL, 33413, USA
3 - UC Davis, Plant Pathology, One Shields Ave, Davis, CA, 95616, United States
4 - CSIRO Plant Industry, Centre for Environment and Life Sciences, Perth, WA, Australia
5 - Dichle University, College of Agriculture and Life Sciences, Diyarkbakir, Turkey
6 - Central Research Institute for Field Crops, Chickpeas and Lentils, Ankara, Turkey
7 - Harran University, Plant Breeding, Urfa, Turkey
8 - University of Southern California, Molecular and Computational Biology, One Child Way, Los Angeles, Ca, 90210

Crop wild relatives

Presentation Type: Oral Paper:Papers for Sections
Session: 22
Location: Rapids/Grove
Date: Tuesday, July 29th, 2014
Time: 10:15 AM
Number: 22005
Abstract ID:355
Candidate for Awards:Margaret Menzel Award

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