摘要
以江苏省林业科学研究院新近杂交培育的6个灌木柳无性系1年生扦插苗为试材，采用水培试验方法，研究了0～3g·L^-1范围内不同质量浓度氯化钠胁迫对灌木柳无性系幼苗生长及光合作用的影响。结果表明．低质量浓度氯化钠胁迫（1～2g·L^-1）对根长、根生物量无显著影响，高质量浓度氯化钠胁迫（3g·L^-1）使根长、根生物量显著降低（P〈0．05）。在氯化钠胁迫处理下，苗高、茎叶生物量、叶绿素质量分数、净光合速率和气孔导度均低于对照，并随着氯化钠质量浓度提高下降幅度加大（P〈0．05）。供试灌木柳无性系中．JW2345和JW2372无性系生长和光合作用受氯化钠胁迫影响最小，耐盐性相对较强；JW1065和JW2334无性系受氯化钠胁迫影响最大，耐盐性相对较弱。
Growth and photosynthetic indices （seedling height, shoot biomass, root biomass, root length, chlorophyll content, net photosynthetic rate, and stomatal conductance） from 1-year-old seedlings of six shrub willow clones （JW22-2, JW51-3, JW1065, JW2334, JW2345, JW2372）with different salt stresses were studied. A single factor design with salt stress treatments of 0, 1.0, 2.0, 3.0 g·L^-1 and three replications was established and tested by solution culture. Results from the six willow clones indicated that 3.0 g·L^-1 salt concentration significantly inhibited （P〈0.05） root biomass and root length, whereas lower salt concentrations （1.0 and 2.0 g·L^-1） were not significantly different. With of salt concentrations of 1.0, 2.0, and 3.0 g·L^-1, seedling height, shoot biomass, chlorophyll content, net photosynthetic rate, and stomatal conductance decreased significantly （P〈0.05）. Among the six clones, JW2345 and JW2372 were most tolerant to salt stress with JWI065 and JW2334 being least tolerant. [Ch, 4 fig. 3 tab. 19 ref.]
出处
《浙江林学院学报》
CSCD
北大核心
2010年第1期63-68,共6页
Journal of Zhejiang Forestry College
基金
"十一五"国家科技支撑计划项目(2006BAD09A04)
