Water regimes on the development of accessions of the Manihot genus

ABSTRACT The objective of this work was to select water deficittolerant accessions the genus Manihot, through morphological characters under different regimes. experiment conducted in a randomized block design, using split-plot arrangement with plots consisting tree regimes (simulated rainfall and depth 100 20% crop evapotranspiration (ETc)), subplots eight Manihot (Gema-de-Ovo Engana-Ladrão from species M. esculenta Crantz, BGMS-115, BGMS-110, BGMS-102, BGMS- 79, BGMS-24, BGMS-48 sp.). were evaluated considering two cycles: first had 120 60 days application treatments. Plant height, stem diameter, number leaves, leaf lobe length shoot dry mass production evaluated. For each cropping cycle, analysis variance performed. highest genotypic means expressed by 79 BGMS-24 for most analyzed variables, regardless cultivation cycle. characteristic production, BGMS-102 BGMS-79 showed best performances conditions limited regime (20% ETc), Accession also grouped group means, trait, treatments rain simulation 100% ETc, demonstrating that, stress conditions, accession is an option tolerate low precipitation responds well when higher occurs.