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J Integr Plant Biol ; 51(12): 1080-5, 2009 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-20021555

RESUMO

The present study aimed to quantify the methyl esters of lenoleic acid (LA), gamma-lenolenic acid (LNA) and oleic acid (OL) in the oil of Brassica napus mutants. Five stable mutants (ROO-75/1, ROO-100/6, ROO-125/12, ROO-125/14, and ROO-125/17) of B. napus cv. 'Rainbow' (P) and three mutants (W97-95/16, W97-0.75/11 and W97-.075/13) of B. napus cv. 'Westar' (P) at M6 stage, exhibiting better yield and yield components, were analyzed for essential fatty acids. The highest seed yield was observed in the mutant (ROO-100/6) followed by ROO-125/14 of Rainbow, that is, 34% and 32% higher than their parent plants, respectively. Westar mutant W97-75/11 also showed 30% higher seed yield than its parent plant. High performance liquid chromatography analysis of the composition of fatty acids indicated that OL was the most dominant fatty acid, ranging from 39.1 to 66.3%; LA was second (15.3-41.6%) and LNA was third (18.1-28.9%). Mutant ROO-125/14 showed higher OL contents than parent (Rainbow). These results are expected to support the approval of ROO-125/14 in the National Uniform Varietal Yield Trials (NUVYT) as a new variety based on high oil quality.


Assuntos
Brassica napus/química , Ácidos Graxos Essenciais/química , Biomassa , Brassica napus/genética , Brassica napus/crescimento & desenvolvimento , Cromatografia Líquida de Alta Pressão , Mutação , Óleos de Plantas/análise
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