不同种源青钱柳幼苗叶片形态、生理特征的差异性比较

The Variation Comparison of Leaf Morphological and Physiological Characteristics Among Different Provenances of Cyclocarya paliurus Seedlings

以5个不同种源青钱柳幼苗为实验材料,对其叶片形态、生理特征的差异性进行比较。结果表明:叶片形态特征差异不显著,净光合速率、PSⅡ反应中心实际光化学转换效率差异显著,光饱和点、CO2羧化效率差异极显著。安徽黄山、江西赣州种源幼苗叶片维持水分平衡能力中等,保水力较强;云南昆明种源的维持水分平衡能力较差,保水力居中;江西九江、贵州黎平种源的维持水分平衡能力居中,保水力较差,原生质忍耐脱水能力较差。综合评价江西赣州、安徽黄山、云南昆明为较优种源。

The variation of leaf morphological and physiological characteristics among five different provenances of Cyclocarya paliurus seedlings were compared. The results showed that the variation of leaf morphological characteristics was not significant among the five provenances. However, there were significant differences in Pn, ФPSⅡ , LSP and CE among the provenances. Concerning the provenance of Huangshan in Anhui province and Ganzhou in Jiangxi province, the ability of seedling leaf water-keeping balance was normal, waterholding ability was better than others. However, the provenance of Kunming in Yunnan province, leaf water-keeping balance ability was low and water-holding was normal. The provenance from Jiujiang in Jiangxi province and Liping in Guizhou province, leaf keeping water balance ability was normal, while water-holding ability and the ability of bioplasm enduring from water-losing were worse than the others. Comprehensive appraisal showed that the provenance of Ganzhou in Jiangxi province, Huangshan in Anhui province and Kunming in Yunnan province were superior to the others.