Porphyra (pyro pia/ Porphyra? Species) belong to Rhodophyta, Protophyta, Rhodophyta and Rhodophyta in systematic taxonomy. It is an algae growing in intertidal zone, and its distribution covers cold zone, temperate zone, subtropical zone and tropical sea area. In addition, there have been many reports in recent years. Porphyra is the highest yield seaweed in the world, and it is widely cultivated in China, Japanese and Korean. ?

Porphyra is one of the main varieties of marine agriculture and export in China. In 20 16, the national laver output was about 135300 tons, and the output value exceeded 1000 billion yuan. The crude protein content of dried laver is 30%~50%, which is rich in dietary fiber, vitamins, calcium, potassium, magnesium and other trace elements, and also contains phycobiliproteins unique to algae. With high nutritional value, it is a rare marine food and a pillar product of rural economy in the southeast coast of China.

Extended data:

morphological character

The cell number of thallus of Porphyra subgenus is 1, and a single cell contains 1 stellate pigment. All species of Porphyra in China belong to this subgenus. ?

Algae scientist Zeng Chengkui divided the subgenus Porphyra into three groups according to the characteristics of algae marginal cells.

(1) In the whole Porphyra group, the leaves have smooth edges, and the shapes of marginal cells are the same as those of other vegetative cells. ?

(2) In Porphyra yezoensis group, there are obvious spikes at the edge of leaves, which are composed of 1 or several cells; ?

(3) In the marginal group of Porphyra, the leaf is composed of several rows of degenerated cells.

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