坛紫菜新品种“申福1号”和“申福2号”耐高温性中试研究

对海区人工栽培的坛紫菜新品种"申福1号"、"申福2号"以及坛紫菜传统栽培种在遭遇高温天气后的生长特性进行了连续跟踪研究。结果表明:在坛紫菜壳孢子采苗下海栽培后,由于海水温度下降幅度小,比正常年份同期水温偏高1~2℃,造成传统栽培种的叶状体腐烂脱落、大规模减产,而在相同海域栽培的"申福1号"和"申福2号"却保持了叶状体的正常颜色和形态以及较快的生长速度,产量和品质受高温影响较小。上述结果证实,坛紫菜新品种"申福1号"和"申福2号"在海区栽培时对高温有明显的耐受性和生长优势,与它们在室内培养所表现出来的耐高温和快速生长特性的结果非常一致。在海区栽培条件下,其比传统栽培种可提高1~2℃的耐高温水平,具备良好的推广潜力。

Study on high-temperature-resisitance of the new varieties "Shenfu No. 1"and "Shenfu No. 2" in Porphyra haitanensis by cultivation at sea area

The new varieties of "Shenfu No. 1" and "Shenfu No. 2" and the traditional cultivar of Pyropia haitanensis were cultivated at the same sea for testing their high-temperature-resistance in the study. The results showed that the blades of the traditional cultivar rot off due to the water temperature higher by 1 to 2 °C as compared to that of the normal year after began cultivation of P. haitanensis at sea, however, the varieties "Shenfu No. 1" and "Shenfu No. 2" maintained the normal color and morphology of blades and higher growth rate, and good yield and quality even cultivated at the same sea area. The results indicated that the new varieties "Shenfu No.1" and " Shenfu No.2" had the advantages of high-temperature-resistance and higher growth speed than the traditional cultivar. The new varieties "Shenfu No. 1" and "Shenfu No.2" had a great potential to be used as a substitute for the traditional cultivar in the future.