Seaweed cultivation or phycoculture has been developed rather fast in recent years. The total production of cultivated seaweed at present is about 6250×10 3 tons fresh weight. The total cultivation area is estima...Seaweed cultivation or phycoculture has been developed rather fast in recent years. The total production of cultivated seaweed at present is about 6250×10 3 tons fresh weight. The total cultivation area is estimated as 200×10 3 hectare. The annual total value of cultivated seaweeds has been estimated to be more than 3 billion US dollars. Phycoculture provides many job opportunities for the coastal region people, has the potential to improve marine environments and thus even induce global change. All traditional cultivation methods and techniques are based on or start from the individual plant or the cultivated seaweed population. Modern biological science and biotechnology achievements have benefited agriculture a lot, but traditional seaweed cultivation has not changed much since its founding. This is because seaweed cultivation has been quite conservative for quite a long period and has accumulated many problems requiring solution. Four main problems might be the most universal ones holding back further development of the industry. New ways of seaweed cultivation must be developed, new techniques must be perfected, and new problems solved. This paper mainly discusses the main problems of traditional seaweed cultivation at present and its possible further development and reformation in the future.展开更多
Porphyra haitanensis and P.yezoensis are two main Porphyra species cultured in China. Their life histories are slightly different. So far we have not observed that P. haitanensis naturally produces monospores developi...Porphyra haitanensis and P.yezoensis are two main Porphyra species cultured in China. Their life histories are slightly different. So far we have not observed that P. haitanensis naturally produces monospores developing into thalli. P.yezoensis produces monospores which directly germinate into young thalli used in cultivation (Zeng,et al., 1985). Some somatic cells in P. yezoensis develop in vitro into monospore-like cells which later grow into young thalli (Lu, 1983). Studies on whether or not somatic cells in P.haitanensis can produce in vitro monospore-like cells that later grow into young thalli is important for understanding its life history and for culturing new varieties.展开更多
文摘Seaweed cultivation or phycoculture has been developed rather fast in recent years. The total production of cultivated seaweed at present is about 6250×10 3 tons fresh weight. The total cultivation area is estimated as 200×10 3 hectare. The annual total value of cultivated seaweeds has been estimated to be more than 3 billion US dollars. Phycoculture provides many job opportunities for the coastal region people, has the potential to improve marine environments and thus even induce global change. All traditional cultivation methods and techniques are based on or start from the individual plant or the cultivated seaweed population. Modern biological science and biotechnology achievements have benefited agriculture a lot, but traditional seaweed cultivation has not changed much since its founding. This is because seaweed cultivation has been quite conservative for quite a long period and has accumulated many problems requiring solution. Four main problems might be the most universal ones holding back further development of the industry. New ways of seaweed cultivation must be developed, new techniques must be perfected, and new problems solved. This paper mainly discusses the main problems of traditional seaweed cultivation at present and its possible further development and reformation in the future.
文摘Porphyra haitanensis and P.yezoensis are two main Porphyra species cultured in China. Their life histories are slightly different. So far we have not observed that P. haitanensis naturally produces monospores developing into thalli. P.yezoensis produces monospores which directly germinate into young thalli used in cultivation (Zeng,et al., 1985). Some somatic cells in P. yezoensis develop in vitro into monospore-like cells which later grow into young thalli (Lu, 1983). Studies on whether or not somatic cells in P.haitanensis can produce in vitro monospore-like cells that later grow into young thalli is important for understanding its life history and for culturing new varieties.
