The color of red heart dragon fruit is red.

Red heart dragon fruit is a perennial, terrestrial, epiphytic, vining cactus in the cactus family Measurement of Heaven. The fruit of the red dragon fruit is broadly ovoid to globular and bright magenta in color, hence the name red dragon fruit.

The reason for the red color of the fruit of red heart dragon fruit is that red heart dragon fruit is rich in anthocyanins and beetrootin, which are color-changing naturally active substances that are blue under alkaline conditions and purplish-red under acidic conditions, while dragon fruit contains fruit acids, the acidity of which gives anthocyanins and beetrootin a purplish-red color. Beet red pigment is a natural red pigment that gives dragon fruit its signature color, red.

The morphological characteristics of dragon fruit are listed as follows:

1. Roots

The plant has no main root, and the lateral roots are distributed in large quantities in the shallow topsoil layer, along with a lot of aerial roots, which can be used to climb and grow. The rootstock is dark green, stout, up to 7 meters long, 10~12 cm thick, with 3 ribs. Ribs flattened, wavy edge, stem nodes at the growth of climbing roots, can be attached to other plants to grow, ribs more than 3, each section of the stem node depression with small spines.

2, stem

Because of the long-term growth in the tropical desert region, its leaves have degenerated, photosynthesis function by the stem. Inside the stem is a large number of thin-walled cells full of viscous liquid for absorbing water during the rainy season.

3, fruit

The dragon fruit is oblong or ovoid, skin red, fleshy, with ovate and acute tip of the scales, fruit length of 10 ~ 12 cm, thick skin, with wax.

Reference: Baidu Encyclopedia - Red Dragon Fruit