CAJ | 학술논문

为探讨经济褐藻羊栖菜人工幼苗对阳光紫外辐射变化的响应,在全波段阳光辐射省(PAB,280～700 nm)、去除UV-B辐射(PA,320～700 nm) 和光合有效辐射PAR(P,400～700 nm) 三种辐射处理及不同辐射水平下培养羊栖菜幼苗,并测定了其生长与光合作用的变化.结果表明,无论在紫外辐射(UVR) 存在情况下(PA,PAB) 还是滤除UVR(PAR) 时,高辐射水平条件下(55%),羊栖菜幼苗都具有较高的生长速率,而低辐射水平下羊栖菜的生长速率较低.在不同辐射处理之间,随着辐射水平的增高,UVR的抑制效应逐渐突显.UVR降低羊栖菜幼苗的光合电子传递速率.
위탐토경제갈조양서채인공유묘대양광자외복사변화적향응,재전파단양광복사성(PAB,280～700 nm)、거제UV-B복사(PA,320～700 nm) 화광합유효복사PAR(P,400～700 nm) 삼충복사처리급불동복사수평하배양양서채유묘,병측정료기생장여광합작용적변화.결과표명,무론재자외복사(UVR) 존재정황하(PA,PAB) 환시려제UVR(PAR) 시,고복사수평조건하(55%),양서채유묘도구유교고적생장속솔,이저복사수평하양서채적생장속솔교저.재불동복사처리지간,수착복사수평적증고,UVR적억제효응축점돌현.UVR강저양서채유묘적광합전자전체속솔.
Effects of solar ultraviolet radiation(UVR) on the growth and photosynthesis of artificially raised young seedlings of Hizikia fusiformis were investigated while exposed to full spectrum solar radiation(PAB,280-700 nm),solar radiation depleted of UV-B(PA,320-700 nm) and solar radiation deprived of total UVR(P,400-700 nm) in order to understand its responses to changes in solar UVR.It was found that the young seedlings showed higher relative growth rate at 55% of solar irradiance level,regardless of the treatments with UVR(PA,PAB) or without UVR(PAR).Lower solar irradiance level resulted in low relative growth rate.Among the different treatments,the inhibitory effects on growth were increased with the enhancement of solar irradiance level.In addition,photosynthetic electron transfer rate of young seedlings was significantly suppressed by UVR.