CAJ | 학술논문

以1年生邓恩桉（Eucalyptus dunnii）幼苗为试验材料，研究了不同浓度（0、0.3%、0.6%、0.9%）NaCl盐分胁迫对邓恩桉幼苗生长和叶片光合作用的影响。结果表明：随着胁迫程度的加强和胁迫时间的延长，叶片叶绿素含量、净光合速率（Pn）、PSⅡ最大光化学效率（Fv/Fm）、PSⅡ潜在光化学效率（Fv/Fo）均呈下降趋势，且显著低于对照；邓恩桉幼苗可耐受较低盐度环境，在盐度0.3%的条件下能够保持一定生长，盐度浓度≥0.6%时，邓恩桉幼苗生长受到显著影响，并导致死亡；NaCl胁迫抑制邓恩桉幼苗的生长和叶片的光合能力。
이1년생산은안（Eucalyptus dunnii）유묘위시험재료，연구료불동농도（0、0.3%、0.6%、0.9%）NaCl염분협박대산은안유묘생장화협편광합작용적영향。결과표명：수착협박정도적가강화협박시간적연장，협편협록소함량、정광합속솔（Pn）、PSⅡ최대광화학효솔（Fv/Fm）、PSⅡ잠재광화학효솔（Fv/Fo）균정하강추세，차현저저우대조；산은안유묘가내수교저염도배경，재염도0.3%적조건하능구보지일정생장，염도농도≥0.6%시，산은안유묘생장수도현저영향，병도치사망；NaCl협박억제산은안유묘적생장화협편적광합능력。
Experiments were conducted on effect of salt stress (0, 0.3%, 0.6% and 0.9% in concentration) on growth and photosynthesis of 1-year seedlings ofEucalyptus dunnii. The results showed that chlorophyll content, net photosynthetic rate (Pn), PSⅡ maximal photochemical efficiency (Fv/Fm) and PSⅡ potential photochemical efficiency (Fv/Fo ) decreased along with increase of salt concentration and duration. The experiment indicated that seedlings treated by higher salt concentration (≥0.6%) had evident negative effect, and even caused death of the seedling. It concluded that growth and photosynthetic capacity ofE. dunniiseedlings were inhibited by the NaCl stress.