Comparative analysis of fatty acids in pollen and seed of rapeseed |
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| Affiliation: | 1. State Chemistry Laboratory, 5 Macarthur Street, East Melbourne, Victoria 3002, Australia;2. Victorian Crops Research Institute, Department of Agriculture and Rural Affairs, Horsham, Victoria 3400, Australia;1. Department of Chemical Technology, University College of Science and Technology, University of Calcutta, Kolkata, India;2. Department of Hematology, I.H.T.M, Calcutta Medical College and Hospital, Kolkata, India;1. Research Centre for Plant RNA Signalling, College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, People’s Republic of China;2. Department of Botany, Faculty of Agriculture, Fayoum University, Fayoum, Egypt;3. School of Life Sciences, University of Warwick, Coventry, UK;1. Department of Poultry Science, University of Warmia and Mazury, 10-719 Olsztyn, Poland;2. Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, 10-748 Olsztyn, Poland;3. Department of Animal Science, University of Manitoba, Winnipeg, R3T 2N2, Canada;1. Western Regional Research Center, Agricultural Research Service, U.S. Department of Agriculture, 800 Buchanan Street, Albany, CA 94710, United States;2. Department of Bioindustry and Bioresource Engineering, Plant Engineering Research Institute, Sejong University, Seoul 05006, Republic of Korea;3. Department of Agricultural Biotechnology, National Institute of Agricultural Sciences, Rural Development Administration, Jeonju 54874, Republic of Korea |
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| Abstract: | Lipids accounted for 31.7% of the dry wt of mature, viable pollen of rapeseed (Brassica napus). External lipids of the pollen coat, specified by the diploid parental genome, and internal cytoplasmic lipids, presumably specified by the haploid pollen genome, were separated by differential extraction. External lipids and paraffins represented 9.8 % of pollen dry wt, and contained predominantly linolenic (18:3) with significant amounts of palmitic (16:0), stearic (18:0) and myristic (14:0) acids, as well as paraffins. Internal lipids accounted for 21.9% of pollen dry wt and comprised predominantly 18:3 and 16:0. Mature seeds of B. napus comprised 45.0 % lipid, with a fatty acid composition different from that of either pollen fraction. Decanoic (10:0), lauric (12:0) and hexadecatrienoic (16:3) acids were detected in pollen but not in seeds. These data are discussed in relation to pollen biochemistry and the potential for pollen selection in rapeseed breeding. |
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