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利用叶片体内荧光测定技术,检测了南北5个地区华山松种源的荧光诱导动力学参数。结果表明,南方种源具有较强的最大荧光(Fm)和可变荧光(FV),其光系统Ⅱ(PSⅡ)的潜在活性(Fv/F0)与原初光能转换效率(Fv/Fm)也明显高于北方种源,并与其树高生长成正相关。另一方面,北方种源的非光化学荧光猝灭系数(QN)比南方种源要大,与它们的树高生长成反相关,而与纬度成正相关。这些实验结果说明,利用荧光诱导动力学技术,可以检测华山松的生长量潜力,在华山松种源选择中有较大的应用前景。
Fluorescence-induced kinetic parameters of Pinus armandii in five areas of North and South China were detected by in-vivo fluorescence assay. The results showed that the provenance of southern provenance had strong maximum fluorescence (Fm) and variable fluorescence (FV), and its potential activity (Fv / F0) and initial photon energy conversion efficiency (Fv / Fm) Significantly higher than the northern provenance and positively correlated with its height growth. On the other hand, the non-photochemical quenching coefficients (QNs) of northern provenances were larger than those of southern provenances, inversely related to their height growth and positively correlated with latitude. These experimental results show that the fluorescence-induced kinetics can be used to detect the growth potential of Pinus armandii and have a great potential application in the selection of Pinus armandii seed sources.