Abstract
MORINGA oleifera and Moringa peregrine are cultivated in many areas in Almadinah Almunawwarah, western part of Saudi Arabia. The aim of the present study is to examine the responses of seed germination, seedling growth and photosynthetic performance for two Moringa species to different temperature treatments; 15/12 degrees C, 25/22 degrees C and 35/32 degrees C; day/night. The obtained results indicated that seeds of both species could germinate at a wide range of temperatures with optimum temperature for highest percentage of germination, at 25 degrees C. The results showed that most parameters of growth and the photosynthetic performances of the two species were highest at 25 degrees C. However, the chlorophyll contents of M. oleifera and most values of chlorophyll fluorescence for both species were similar across the three temperature treatments. Additionally, the outcomes of this study showed that Moringa can be cultivated in many different regions with different temperatures.