Relations of environments variables and subperiods in yield and content oil in canola

Ciência Rural

Medeiros, Sandro Luis Petter³  Krüger, Cleusa Adriane Menegassi Bianchi¹  Silva, José Antonio Gonzalez da¹  Gewehr, Ewerton¹  Silva, Adair José da¹  Renhardt, Emílio Ghisleni¹  Dalmago, Genei Antonio² 

[1] Universidade Regional do Noroeste do Estado do Rio Grande do Sul, Ijuí, Brasil;Empresa Brasileira de Pesquisa Agropecuária, Passo Fundo, Brasil;Universidade Federal de Santa Maria, Santa Maria, Brasil

关键词: Brassica napus;    phenological phases;    thermal sum;    sunshine hours;    row spacing;   

DOI  :  10.1590/0103-8478cr20121331

学科分类：农业科学（综合）

来源: Universidade Federal de Santa Maria * Centro de Ciencias Rurais

【 摘 要 】

The objective of the study was to evaluate the relationship among grain yield, oil content and subperiods of canola with thermal time and accumulated sunshine hours during of grain-filling phase and classify the importance of this variables about morphological differences observed. Three experiments were carried out with row spacing of 0.20, 0.40 and 0.60m. During two crop years (2008 and 2009), the genotypes 'Hyola 432' and 'Hyola 61' were evaluated in three plant densities (20, 40 e 60 plants m-2) in each experiment. The experimental design was to randomized blocks in factorial arrangement 2x2x3 (years x genotypes x densities), with four replicates. The thermal time in subperiod of flowering to physiological maturation is not associated directly to the yield and oil content in grains by plant arrangement. The days of emergence to the beginning of flowering, of emergence to late flowering and duration time of flowering in canola are variables more contribute to morphological variation total.

【 授权许可】

Unknown