CAJ | 학술논문

对生长在两个海拔地带(3200m,3980m)的矮嵩草(Kobresia humilis Serg.)和珠芽蓼(Polygonumviviparum L.)叶片的叶绿素荧光特性及其叶绿体超微结构进行了比较研究。海拔升高，矮嵩草和珠芽蓼叶片的Fv/Fo、Fv/Fm和Rfd值均增大，且矮嵩草的Fv/Fo、Fv/Fm和Rfd值均大于珠芽蓼。叶绿体超微结构的结果显示，海拔升高，珠芽蓼和矮嵩草的叶绿体都表现出一定程度的变形，但珠芽蓼的叶绿体变形和类囊体膜肿胀现象更为显著。研究表明，矮嵩草和珠芽蓼光合作用对高山胁迫环境具有很强的适应性,且矮嵩草的适应能力比珠芽蓼强。
대생장재량개해발지대(3200m,3980m)적왜숭초(Kobresia humilis Serg.)화주아료(Polygonumviviparum L.)협편적협록소형광특성급기협록체초미결구진행료비교연구。해발승고，왜숭초화주아료협편적Fv/Fo、Fv/Fm화Rfd치균증대，차왜숭초적Fv/Fo、Fv/Fm화Rfd치균대우주아료。협록체초미결구적결과현시，해발승고，주아료화왜숭초적협록체도표현출일정정도적변형，단주아료적협록체변형화류낭체막종창현상경위현저。연구표명，왜숭초화주아료광합작용대고산협박배경구유흔강적괄응성,차왜숭초적괄응능력비주아료강。
The chlorophyll fluorescence parameters of Kobresia humilis Serg.and Polygonum viviparum L. grown at two different altitudes (3200 m, 3980 m) were measured and the ultrastructure of chloroplasts were observed for studying the photosynthetic adaptability of plants to the influences of stress conditions in alpine environment. Rfd-values, the vitality index, in leaves of K. humilis and P.viviparum grown at 3980 m were higher than those at 3200 m. The higher ratio of Fv/Fo and Fv/Fm in leaves of K. humilis and P.viviparum indicated that the rate of photosynthetic conversion of light energy increased at higher altitude. Ratios of Fv/Fo and Fv/Fm and Rfd-values in K.humilis were higher than that in P.viviparum grown at the same altitude. There were more irregular chloroplasts in leaves of both species grown at higher altitude. Many irregular chloroplasts such as swollen thylakoid, deformed chloroplast envelope, were observed in P.viviparum grown at 3980 m, but few in K. humilis. These results were discussed in relation to the photosynthetic adaptability of alpine plants and the different adaptive competence between K.humilis and P.viviparum.