Elsevier

Phytochemistry

Volume 26, Issue 7, 1987, Pages 1895-1897
Phytochemistry

Comparative analysis of fatty acids in pollen and seed of rapeseed

https://doi.org/10.1016/S0031-9422(00)81723-9Get rights and content

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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