不同光质对多肋藻配子体生长发育的影响

Effects of different light quality on the growth and development of gametophyte of Cost aria costata

以多肋藻(Costaria costata)雌雄配子体为材料,研究了蓝光、白光、红光对配子体生长发育的影响。结果表明:光质对多肋藻配子体的生长发育有显著的影响(P<0.05),雌配子体在蓝光条件下相对生长率(5.62%)显著高于红光(3.37%),但与白光下的相对生长率(4.94%)无显著差异;雄配子体在白光下的相对生长率(8.71%)最高,显著高于红光(6.73%),但与蓝光下的相对生长率(7.74%)无显著差异。相同光质条件下,雄配子体相对生长率显著高于雌配子体。整个培养周期过程中,红光条件下,配子体均未发育。相同培养天数下,蓝光组的发育率显著高于白光组。随着培养天数的增加,白光组和蓝光组的发育率均有显著的提高,白光组于第28天达到最大值21.13%,蓝光组于第20天达到最大值67.73%。

The effects of blue light,white light and red light on the growth and development of female and male gametophytes of Costaria costata were studied.The results showed that the RGR(relative growth rate)of female gametophyte under red light(3.37%)was significantly lower than that under blue light(5.62%),the RGR of male gametophyte under white light(8.71%)was higher than that under red light(6.73%),but there was no significant difference with that under blue light(7.74%).Under the same light quality,the RGR of female gametophyte was significantly lower than that of male gametophyte.The gametophytes did not develop under red light during the whole culture period.The development rate of blue light group was significantly higher than that of white light group under the same culture days.With the increase of culture days,the growth rate of white-light group and blue-light group increased significantly.The maximum value of white-light group was 21.13%on the 28th day,and that of blue-light group was 67.73%on the 20th day.