CHEMICAL CHARACTERIZATION OF THREE CANOLA GENOTYPES (Brassica napus L.) PRODUCED WITH AND WITHOUT BRASSINOSTEROID APPLICATION

Abstract

The aim of this study was to chemically characterize the response of three
canola genotypes (Monty, Hyola-401 and IMC-204) to the application of
brasinosteroids in plant. By means of a completely randomized design and a
factorial arrangement, six treatments were established (three genotypes with
and without application of brasinosteroids). Seed samples were obtained to
determine the variables: ether extract (EE), crude protein (CP), soluble crude
protein (SCP), neutral detergent insoluble crude protein (NDICP) and acid
detergent insoluble crude protein (ADICP); all expressed as percentage in dry
basis. Hyola-401 and Monty genotypes showed the highest contents of SCP
(20.2 and 18.5 %, respectively) and CP (24.5 and 24.6 %, respectively). The
Hyola-401 genotype presented the lowest contents of ADICP (4.4 %), NDICP
(7.1 %) and EE (42.0 %). The average CP of the three genotypes increased by
the application of brasinosteroids (22.7 to 28.8 %), mainly in the Hyola-401
genotype (21.7 to 26.3 %). In conclusion, the Hyola-401 genotype, that
showed low values of EE, NDICP and ADICP, increased its protein content by
the application of brasinosteroids.