Effect of Extract of Fast Growing Species Trifolium alexandrium L. on Germination, Photosynthetic Pigments and Nutrient Uptake of Prosopis cineraria (L.) Druce

In a completely randomized design, the effect of the extract from Trifolium alexandrium (۰, ۰.۲ and ۰.۴%) on the germination, some morphological characteristics, photosynthetic pigments, and nutrients uptake of Prosopis cineraria was evaluated. The highest germination rate and percentage (۹.۱۶ and ۲۱%, respectively) were recorded in the ۰.۲% treatment. The maximum and minimum lengths of radicle (۶.۵۸ and ۳.۱۶ cm) and pedicel (۶.۵۶ and ۱۴.۲۳ cm), and dry weight were recorded in the control and ۰.۴% treatments, respectively. The highest level of chlorophyll a (۱۶.۸۰ mg g-۱ fresh weight) was found in the control. The highest and lowest chlorophyll b (۹.۶۵ and ۷.۹۶ mg g-۱ fresh weight) were measured in the ۰.۲%and control, respectively. The extract adversely affected the nutrient uptake by P. cineraria, the minimum and maximum of which were recorded at the ۰.۴%and control treatments, respectively. In general, although the extract of T. alexandrium increased the P. cineraria germination in the ۰.۲% treatment, the increased concentrations led to its reduced growth and nutrient uptake. Therefore, the simultaneous cultivation of these two species in the dry lands is not recommended.

کلیدواژه ها:

Allelopathy ، Plant growth ، Plant Extract ، Photosynthetic pigments