Open AccessProtein Fractions of Pearl Millet Submitted to Different Nitrogen Doses and Cutting Ages
Author(s) -
Oscar Lopes Faria Júnior,
Aldi Fernandes de Souza França,
Alzira G. da Silva-Pause,
Eliane Sayuri Miyagi,
Hugo Jayme Mathias Coelho Perón,
Emmanuel Arnhold,
Alessandra Gimenez Mascarenhas,
Daniel Staciarini Corrêa
Publication year - 2013
Publication title -
journal of agricultural studies
Language(s) - English
Resource type - Journals
ISSN - 2166-0379
DOI - 10.5296/jas.v1i1.2890
Subject(s) - cultivar , pennisetum , nitrogen , completely randomized design , factorial experiment , pearl , zoology , chemistry , horticulture , biology , agronomy , botany , mathematics , philosophy , statistics , theology , organic chemistry
The objective of this study was to characterize and identify the protein fractions of two cultivars of pearl millet (Pennisetum glaucum) – ADR-300 and cv. BN-1 – submitted to different nitrogen doses (0, 50, 100 and 150 kg.ha-1) at three cutting ages. The experimental design used was randomized blocks with a 4 x 3 factorial treatment structure, with three repetitions. The crude protein concentration (CP) and the protein fractions A, B1, B2, B3 and C of the pearl millet cultivars were evaluated by the Cornell Net Carbohydrate and Protein System. The CP concentrations differed according to the cultivars, with variation between the treatments of 14.01% to 23.29% for ADR-300 and 11.82% to 19.29% for BN-1. Fraction A (P<0.05) differed for the two cultivars, with variations also observed in the B1, B2 and B3 fractions in function of the treatments applied. Fraction C (P<0.05) differed among treatments only on the first cutting, for all doses for the two cultivars evaluated. The nitrogen doses and cutting age influenced the composition of the protein fractions.