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| Sexual Reproduction and Artificial Breeding of Brown Alga Sargassum polycystum |
| XING Shanshan,ZOU Xiaoxiao,LIN Yong,ZHU Jun,HUANG Huiqin,BAO Shixiang |
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Abstract In order to study the characteristics of sexual reproduction process and explore the feasibility of artificial seedling of brown alga Sargassum polycystum ,a systematical observation was conducted through the method of field observation and indoor‐culture observation including characteristics of male and female receptacles ,differentiation of the fertilized egg ,rhizoid formation ,grow th of the young seedling .In addi‐tion ,the artificial seedling experiments were carried out in the laboratory .The results showed that the re‐production was found around May and June annually at temperature of 28 ℃ ,and that eggs and sperms were release from receptacles .It took 48 hours for the fertilized eggs to develope into young seedling with rhizoid;after 35 days ,the protophyll were formed .The artificial breeding indicated that the brown alga had body length of 2 .5—3 mm ,and the average seedling density of 2—3 per cm2 ;after 60 days cultiva‐tion ,the length of the brown alga reached to 7 cm ,with average seedling density of 2 per cm2 .The find‐ings laid the technical guidance to artificial seedling of S .polycystum .
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Received: 25 April 2016
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