Morphological characteristics:
The fruit is round, oblate, pear-shaped or wide cone-shaped, and its transverse diameter is usually greater than 10 cm, and it is light yellow or yellow-green. The hybrid is bright red, with extremely thick or thin skin, spongy, large oil cells, convex stone, solid and soft, and has 10- 15 or as many as 19 petals. There are more than 200 seeds, some of which are seedless, irregular in shape, usually rectangular, the upper part is thin and often truncated, the lower part is full, mostly stunted, with obvious longitudinal edges, ivory cotyledons and single embryos.
Extended data
Living habits:
Pomelo trees have strong adaptability to temperature, with annual average temperature 16.6-2 1.3℃, monthly average temperature 1.4- 13.2℃, annual accumulated temperature ≥ 10℃ and absolute low temperature-65438.
Pomelo trees have wide adaptability to soil types and soil pH, but the soil permeability is good, the soil porosity is above 10%, and the oxygen content is above 6%. Soil hardening and excessive moisture lead to insufficient oxygen in the soil, and also produce poisonous roots such as hydrogen sulfide, nitrous acid and ferrous oxide, which make the roots rot.
The requirement for air humidity of grapefruit is about 75%, which is suitable for the growth and development of grapefruit. Grapefruit is shade-tolerant in citrus, but good lighting conditions are needed to achieve high quality and high yield. However, grapefruit should not be exposed to strong light, and diffuse light is more beneficial to the photosynthesis of grapefruit than direct light. ?
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