Under normal circumstances, eating fruit will not lead to the change of urine color. But there are indeed many people who say that red urine appears after eating pitaya. It may be related to the absorption of pigment from pitaya by human body.
morphological character
Pitaya is a perennial climbing succulent plant. Plants have no main roots, and lateral roots are widely distributed in shallow soil. At the same time, there are many aerial roots to climb and grow. Rhizomes are dark green, stout, 7 meters long, 10- 12 cm thick, and have three edges. The edge is flat and the edge is wavy. Climbing roots grow on stem nodes, which can climb on other plants. There are three edges, and there are small thorns in the depression of each stem node.
Because of its long-term growth in tropical desert areas, its leaves have degenerated, and its photosynthetic function is borne by its stems. Inside the stem is a large number of parenchyma cells filled with viscous liquid, which is beneficial to absorb as much water as possible in rainy season.
There are a large number of multi-bud and mixed bud primordia in buds, which can be extracted into leaf buds and flower buds. At the early stage of flower bud development, it can be transformed into leaf bud under suitable temperature conditions. The apical tissue of vigorous branches can also germinate flower buds under appropriate conditions.