CAJ | 학술논문

以构树(Broussonetia papyifera )1年生幼苗为试验材料，研究淹水胁迫对构树幼苗形态及部分生理生化指标的影响。结果表明：淹水胁迫对构树幼苗的高生长有一定的抑制作用，而对其地径的增长和不定根的形成具有促进作用；净光合速率受气孔因素影响呈现出先快速下降，随后有所上升，最后逐渐下降的趋势；整个淹水处理过程中未出现死亡现象，叶片相对电导率呈先下降后上升再下降的趋势；SOD 活性始终保持在较高的水平；POD活性呈先下降后上升再下降的趋势；MDA含量随淹水时间的持续呈缓慢上升的趋势。因此，构树幼苗具有一定的抗淹水能力，为较耐水湿树种，可以在地下水位过高和轻度淹水胁迫地区种植，但长期的淹水胁迫会破坏其叶片膜结构，从而对植株造成伤害。
이구수(Broussonetia papyifera )1년생유묘위시험재료，연구엄수협박대구수유묘형태급부분생리생화지표적영향。결과표명：엄수협박대구수유묘적고생장유일정적억제작용，이대기지경적증장화불정근적형성구유촉진작용；정광합속솔수기공인소영향정현출선쾌속하강，수후유소상승，최후축점하강적추세；정개엄수처리과정중미출현사망현상，협편상대전도솔정선하강후상승재하강적추세；SOD 활성시종보지재교고적수평；POD활성정선하강후상승재하강적추세；MDA함량수엄수시간적지속정완만상승적추세。인차，구수유묘구유일정적항엄수능력，위교내수습수충，가이재지하수위과고화경도엄수협박지구충식，단장기적엄수협박회파배기협편막결구，종이대식주조성상해。
Morphological and physiological indicators of 1-year-old seedlings of Broussonetia papyifera were investigated in this waterlogging experiment.The results showed that under waterlogging stress, height growth was inhibited,while basal diameter growth and adventitious root formation was promoted. The net photosynthetic rate,affected by stoma conductance,showed a rapid decrease followed by an in-crease in the last gradual downward trend.Waterlogged seedlings did not appear to death.Leaf relative con-ductivity firstly increased and then decreased.SOD activity generally maintained at a high level,while POD activity showed a decrease followed by an increase in the last downward trend.MDA continued to rise slowly over time.Therefore,it is suggested that B.papyifera seedlings have a certain degree of anti-water-logging capacity,which can be used in high ground water level and moderate flooding stress area.However, long-term waterlogging would also make them subj ect to certain inj uries.