渔业现代化Issue(6)：6-9,45,5.DOI:10.3969/j.issn.1007-9580.2013.06.002
雷州马尾藻种藻质量及幼苗密度对采苗量和幼苗生长的影响
Effects of the mass of parental fronds and the germling density on the amount of seedlings collected and growth of young sporophytes of Sargassum leizhouense
摘要
Abstract
Combining indoor and outdoor culture , four groups of the mass ratio of parental female to male fronds (2∶1, 4∶1, 5∶1, 6∶1) and seven groups of juvenile sporophytes density (1,2, 5, 10, 15, 20, and 30/mL) of Sargassum leizhouense were set up , to study the effect of different mass ratio of parental female to male fronds of S.leizhouense on seedling amount adhering to seedling curtains and their survival rate .And the relative growth rate and survival rate of cultured juvenile sporophytes at different cultural density were measured.The results showed that 6 604.3 individuals, the most amount of seedlings per mass of female frond, and 63.5 seedlings of per milliliter on seedling curtain were obtained at mass ratio of 4:1(♀∶♂). However , after 40-day outside culture , the highest seedling survival rate was 56.2 percent at mass ratio of 5∶1 (♀∶♂) , while it was lowest ( only 20 .9 percent ) at mass ratio of 4∶1 (♀∶♂) .There was no significant difference for effect of cultural density on the growth of juvenile sporophytes ( P>0.05 ) , but on the growth rate(P<0.05).The lowest survival rate (87.5%) seedling was obtained at density of 30/cm2 after 21-day indoor culture .There was significant difference from other density groups ( P <0 .05 ) .In conclusion , the optimum mass ratio of parental female to male fronds for artificial collection of S.leizhouense seedlings is 5∶1, and the suitable culture density for growth and survival of juvenile S .l eizhouense seedlings is less than 30/cm2.关键词
雷州马尾藻/密度/采苗量/幼孢子体/生长Key words
Sargassum leizhouense/density/seedling collection amount/juvenile sporophtytes/growth分类
农业科技引用本文复制引用
孙会强,吉才就,赵素芬,李倩茹,何红燕,何山,黄素坚,梁汉磊..雷州马尾藻种藻质量及幼苗密度对采苗量和幼苗生长的影响[J].渔业现代化,2013,(6):6-9,45,5.基金项目
广东省科技计划项目（2009B080701048）；广东海洋大学引进人才科研启动费项目（1112386）；广东海洋大学大学生创新创业训练计划项目 （）
