CAJ | 학술논문

比较研究了新疆伊犁地区广泛栽植的两个品系的杂交杨Populus balsamifera L .(Da)和Populus euramericana cv(I-467)叶绿素荧光变化特征；揭示两个品系的杂交杨对特殊地理区域中强辐射等环境影响因子的内禀生态适应性.通过暗适应和光适应的荧光实验,表明两个品系的杂交杨暗反应下荧光变化相似,光反应下荧光变化存在明显差异.I-467将光合反应中心PSⅡ吸收的过剩光能以热耗散等非光化学过程消耗的能力大于Da,相应降低了用于光化学淬灭的份额.Da对光的敏感指数(S)和PSⅡ反应中心吸收的过剩光能(E)能均高于I-467.取消光照条件后,两个品系杂交杨叶绿素荧光系统最初均能以较快的速度恢复,恢复速度逐渐减慢.Da对强光的转化适应能力比 I-467高,I-467对弱光和快速的光变化的适应程度更强.实验结果表明Da对于强光的适应能力更好,对光能的利用率更高.因此Da更适合作为新疆强光辐射区伊犁河谷人工速生丰产林树种进行造林.
비교연구료신강이리지구엄범재식적량개품계적잡교양Populus balsamifera L .(Da)화Populus euramericana cv(I-467)협록소형광변화특정；게시량개품계적잡교양대특수지리구역중강복사등배경영향인자적내품생태괄응성.통과암괄응화광괄응적형광실험,표명량개품계적잡교양암반응하형광변화상사,광반응하형광변화존재명현차이.I-467장광합반응중심PSⅡ흡수적과잉광능이열모산등비광화학과정소모적능력대우Da,상응강저료용우광화학쉬멸적빈액.Da대광적민감지수(S)화PSⅡ반응중심흡수적과잉광능(E)능균고우I-467.취소광조조건후,량개품계잡교양협록소형광계통최초균능이교쾌적속도회복,회복속도축점감만.Da대강광적전화괄응능력비 I-467고,I-467대약광화쾌속적광변화적괄응정도경강.실험결과표명Da대우강광적괄응능력경호,대광능적이용솔경고.인차Da경괄합작위신강강광복사구이리하곡인공속생봉산림수충진행조림.
Two widely planted poplar species Populus balsamifera L.(Da)and Populus euramericana cv (I-467)were used to investigate chlorophyll fluorescence (F)characteristics to reveal their intrinsic ecological adaptability during long-term adaptation to the ambient environment by chlorophyll fluores-cence dark adaptation and light adaptation experiments.The result showed that the change trend of chlorophyll fluorescence under darkness was similar and the change trend of chlorophyll fluorescence un-der lightness was different.The photosynthesis reaction center of I-467 absorbed excess light energy(E) to use more non-photochemical process such as heat dissipation than Da,correspondingly reduced for photochemical quenching share.Excess absorbed light energy and the light sensitive index (S)of Da were higher than those of I-467.Cancelling illumination conditions,the chlorophyll fluorescence of two poplar species initially recovered quickly,and then the speed of recovery gradually slow down.Da adap-ted to strong light,but I-467 adapted to low light and fast light changes.The experiment results showed that Da was better able to adapt to the strong light of energy utilization.Da was suitable as the fast growing forest tree species to using radiation in Xinjiang Ili Valley for afforestation.