Estresse hídrico no metabolismo e crescimento inicial de mudas de Mutambo ( Guazuma ulmifolia Lam.)

摘要: This work aimed to evaluate the initial growth of Guazuma ulmifolia (mutambo) seedlings under different water regimen. The received following treatments water: 100%, 50%, 25% and 12.5% capacity field were evaluated in 35 83 days cultivation treatments. survival 12.5%fc was smaller than others treatments, being only on after did not resist, lost completely leaf died. height, diameter, area, dry mass airy part roots higher high availability, however medium length vary among stomatal conductance, photosynthesis transpiration rates lower 12.5%fc, but efficiency use between fc. rate liquid assimilated relative growth, area ratio opening ostioles decreased with low capacity. To production Guzuma regimen phase must be 100%fc, is satisfactory below 50%fc. Bellow 25%fc get stress before cultivation.