以人工选育的坛紫菜优良品种“申福1号”( SF-1)、优良品系“申福2号”(SF-2)和野生型品系(WT)为材料,通过室内培养与海区中试,对SF-2的优良特性和生产适用性进行评估.结果发现,与WT相比,SF-2的叶状体在生长速率、藻胆蛋白含量、藻体厚度及产量上均存在十分显著的优势.在相同的室内培养条件下,SF-2叶状体的绝对生长速率显著高于WT,培养至90d时,其平均长度为(391.6 ±47.37) cm,是WT的10倍.3个品系(种)的叶状体活体吸收光谱在350～750 nm范围内均存在5个明显的吸收峰,SF-1与SF-2之间的各峰值差别较小,但均明显高于WT.SF-2叶状体的藻胆蛋白(PE+PC)含量为(90.81±3.98) mg/g,是WT的1.95倍左右,比SF-1的含量稍高.SF-2叶状体的平均厚度为(31.95±4.16) μm,分别比WT与SF-1薄38.7％和14.0％.SF-2的壳孢子放散量约为28.6万个/壳,比SF-1提高了43.0％,可以满足生产采苗需求.海区栽培的前四水鲜菜重量,SF-2为24 000 kg/hm2,比WT和SF-1分别增加30.1％和6.7％.上述结果证实,SF-2的海区壳孢子放散量可以达到生产要求,叶状体的生长速率、生长期、产量和品质比WT均明显提高,生长优势十分明显.所以,该品系有望在生产上进行大规模栽培.%The characteristics of the improved strain SF-2 were evaluated and compared with the improved variety SF-1 and the wild type of Porphyra haitanensis according to the results of the laboratory studies and pilot scale tests in mariculture farm. There were significant differences between SF-2 and WT in growth rates, contents of phycobiliprotein, thicknesses of the blades and yields of pilot cultivation. The absolute growth rates of SF-2 blades were significantly higher than those of WT. The length of 90-day-old SF-2 blades was(391.6 ±47.37) cm which was about 10 times longer than WT. There were five peaks in the in vivo absorption spectra of SF-1,SF-2 and WT blades between wavelengths of 350-750 nm,and the peak values of SF-1 and SF-2 were almost the same, but both higher than those of WT. The phycobiliprotein content of SF-2 blades was (90.81 ±3.98) mg/g which was slightly higher than SF-1 and was 1.95 times higher than that of WT. The mean thickness of SF-2 blades was (31. 95 ±4. 16) μm, which was 14. 0% and 38. 7% thinner than that of SF-1 and WT, respectively. The number of the released conchospores per shell of SF-2 conchocelis in mariculture farm was 286 000, which was 43. 0% more than that of that of SF-1 and was sufficient in cultivation. The fresh yield of SF-2 of the first four harvests was 240 000 kg, which increased by 30.1% compared with WT and by 6. 7% compared with SF-1 ,resepectively. It came to a conclusion that the superiority of the improved strain SF-2 possesses the value to be applied and disseminated.
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