三十烷醇对海带生长和生理活性的影响

在海带夹苗放养前,用0.5～1.0ppm三十烷醇浸苗,能提高叶绿素和岩藻黄素含量,促进光合作用,并可在相当长时间内,提高海带对磷酸盐和硝酸离子的吸收,还可使海带体内核酸含量增加,进而促进海带迅速生长,缩短了放养后的缓苗时间,为产量的形成打下早期生长的基础。

THE EFFECTS OF TRIACONTANOL ON GROWTH AND PHYSIOLOGICAL ACTIVITIES OF LAMINARIA JAPONICA

The paper reports the notable effect of the triacontanol upon theinitial growth of Laminara japonica. Before cultivated, the thalli are immersed indifferent concentrations of triacontanol solutions (0.25. 0.5, 1ppm) for six hours.Ten days later, the length of kelps, compared with the check, increases by 26%,50% and 48% respectively, and the superiority in growth can continue to a fairlylong period. Moreover, the thickness of the fronds also exceed that of the controlfrom fourty days after treatment. The results show that the positive effect on growth is closely connected withthe stimulation of the physiological activities. The triacontanol makes a notableeffect on photosynthesis in the first twenty days. The triacontanol also plays anactive role in the absorption of phosphate and nitrate, and this effect can remainfor quite a long time. Besides, the content of nucleic acids increase in the processand it implies a possible mechanism of the growth promotion by the triacontanol.