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首页> 外文期刊>Brazilian Archives of Biology and Technology >Transpiration and Stomatal Resistance Variations of Perennial Tropical Crops Under Soil water Availability Conditions and water Deficit
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Transpiration and Stomatal Resistance Variations of Perennial Tropical Crops Under Soil water Availability Conditions and water Deficit

机译：土壤水分状况和缺水条件下常年热带作物的蒸腾和气孔阻力变化。

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摘要

During the dry and rainy seasons, determinations of stomatal resistance and transpiration of five tropical cropswere carried out: guarana (Paullinia cupana Kunth), coffee (Coffea arabica L.), cashew (Anacardium occidentaleL.), guava (Psidium guajava L.) and rubber (Hevea brasiliensis Muell. - Arg.) trees. Experimental design was doneat randomized complete blocks with five replications. During the dry season there was a decrease in values ofstomatal resistance in the following order: guarana > coffee> cashew> guava > rubber, with values from 2.5 to30.0 s.cm~(-1). During the rainy season the stomatal resistance values varied from 1.5 to 3.0 s.cm~(-1) . The guarana andcoffee crops showed higher resistance to water transpiration when compared to other crops. During the rainyseason, the rubber tree continued to present lower stomatal resistance and, consequently, higher transpiration.
机译：在干燥和雨季，对五种热带作物的气孔阻力和蒸腾作用进行了测定：瓜拉那（Paullinia cupana Kunth），咖啡（Coffea arabica L.），腰果（Anacardium occidentaleL。），番石榴（Psidium guajava L.）和橡胶树（Hevea brasiliensis Muell。-Arg。）树。在具有五个重复的随机完整块上进行实验设计。在干旱季节，气孔阻力值按以下顺序下降：瓜拉那>咖啡>腰果>番石榴>橡胶，其值在2.5至30.0 s.cm〜（-1）之间。在雨季，气孔阻力值在1.5至3.0 s.cm〜（-1）之间变化。与其他作物相比，瓜拉那和咖啡作物对水分蒸发的抵抗力更高。在雨季期间，橡胶树的气孔阻力持续降低，因此蒸腾作用增强。

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