Leaf stomatal conductance and stomatal morphology of Musa germplasm

摘要: Drought tolerance combined with resistance to black sigatoka (BS) disease are two desirable traits for plantains in some parts of the tropics. Field evaluation leaf stomatal conductance, single transpiration rate, photochemical efficiency, and role stomata BS resistance, was done 18 genotypes Musa spp., which included diploid triploid banana tetraploid plantain hybrids, at a sub-humid humid site. Conductances were significantly (P ≤ 0.01) higher abaxial than adaxial surfaces (S), while clonal (C) differences significant 0.05). Interactions between sampling period (T: morning vs afternoon) location (L), clone (C × L) both conductance transpiration; T interaction conductance. Significant interactions T) suggested that specific need be considered given environment. Total variation explained by following variables: S, C, L), T), L T). In general, ABB cooking had conductances other taxonomic groups (AAB, AA, AAA, AAAB). Evaluation morphological physiological indicated is due non-stomatal mechanisms.