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Book of Abstracts First Legume Society Conference 2013: A Legume Odyssey Novi Sad, Serbia, 9-11 May 2013 _________________________________________________________________________________________ Physiological, biochemical and molecular variations for cold tolerance in desi and kabuli chickpea (Cicer arietinum L.) genotypes Jagmeet Kaur 1 , Ritika Aggarwal 2 , Satvir Kaur 3 1 Department of Plant Breeding and Genetics, PAU, Ludhiana 2 Department of Botany, PAU, Ludhiana 3 Department of Biochemistry, PAU, Ludhiana The present investigation was carried out to assess the variations in physiological, biochemical and molecular traits in desi (PBG1, PBG 5, GL28008 and GNG1861) and kabuli (L552, GLK 26162) chickpea cultivars contributing towards cold stress tolerance in them at various growth stages and at temperature maintained 5 0 C and 10 0 C during crop development. The higher biomass accumulation in kabuli chickpea cultivars at low temperature was due to profuse vegetative growth in them as indicated by increased plant height, leaf area and leaf area index in them. Physiological parameters such as leaf water content and respiratory activity was found to be higher in kabuli genotypes at all the growth stages whereas photosynthetic efficiency in terms of total chlorophyll content and photosynthetic assimilation rate was recorded to be higher in desi genotypes. Pollen viability was found to be maximum in L552 (81.8%) followed by GLK26162 (76.9%) and GNG1861 (73.8%). The higher status of antioxidative enzymes (catalase and peroxidase) along with proline content in GNG1861 and GLK 26162 at lower temperature might be responsible for their tolerance behaviour towards cold stress tolerance. The highest yield was recorded in GNG1861 (3185 Kg/ha) followed by L552 (3055 Kg/ha). GLK 26162 showed distinct physiological and biochemical characters which render it a tolerant in kabuli category with 81.3% filled pods and highest 100 seed weight of 31.6 g. All these cultivars were characterized for the molecular diversity using nineteen RAPD primers. A dendrogram constructed on the basis of UPGMA clustering method revealed grouping of these genotypes in two major clusters except for kabuli genotype GLK 26162. Cluster-I constituted four genotypes grouped into two sub clusters- A and B. Highly tolerant desi genotype GNG1861 with 76.4% filled pods and moderately tolerant kabuli genotype L552 with 82.5% filled pods were found to be closely related in sub cluster B having maximum Jaccard’s similarity coefficient. The most sensitive genotype PBG 5 having minimum filled pods (65.2%) was found alone in the cluster – II. 201
Book of Abstracts First Legume Society Conference 2013: A Legume Odyssey Novi Sad, Serbia, 9-11 May 2013 _________________________________________________________________________________________ Mitigating the impact of climate change through stable multi-disease resistant chickpea genotypes Livinder Kaur 1 , Asmita Sirari 1 , Dinesh Kumar 1 , Sarvjeet Singh 1 , Inderjit Singh 1 , Karan Kapoor 1 , Jagmeet Kaur 1 , Jeet Singh Sandhu 2 , Suresh Pande 3 , Mamta Sharma 3 1 Punjab Agricultural University, Ludhiana, Punjab, India 2 Indian Council of Agricultural Research, New Delhi, India Chickpea is the third most important food grain legume, sown as winter crop in most parts of the world but with varied temperature and other climatic conditions. Hence, experiences there major constraints in cultivation, Ascochyta blight (AB) (Ascochyta rabiei (Pass.) Lab.) in cool wet geo– agricultural zones, Fusarium wilt (FW) (Fusarium oxysporum f.sp. ciceris Synd. & Hans.) and dry root rot (DRR) (Rhizoctonia bataticola (Butler) Taub) in warm dry conditions. Host resistance is the most economical solution for sustainable grain yield, but cultivars soon age to disease resistance, inviting a need for novel genotypes with high level resistance suitably with stable multiple disease resistance with consistent pattern over the years to overcome the impact of climate change in resistance break down. Sixty genotypes were screened consecutively for five years from 2007-08 to 2011-12 against FW and DRR by sick-plot technique and AB using controlled atmosphere field screening technique. Disease reactions were recorded on 1-9 rating scale for AB and percentage of plants killed for FW and DRR. Resistance was defined as reaction types of ≥3 for AB and ≥5% plant killed for FW and DRR. The genotypes viz. GL 26115, GL827085, GL27111, GL27133, GL27163, GL28211, GL28149, GL28286, GL28295, GL28297, GL29328, GLK24096, GG1362, GG1390, GG1403, FLIP02-276, FLIP03-114, ICCV98815 with consistent disease response can be used as donors in chickpea improvement programme or directly as cultivars. The total chlorophyll content of the 60 genotypes has been correlated with these diseases and tried to work out the significant relation if any. 202
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First Legume Society Conference 201
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Scientific Committee Michael Abbert
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Programme 9 Session 1 Achievements
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