CAJ | 학술논문

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0～3 g·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(1～2 g·L~(-1))对根长、根生物量无显著影响,高质量浓度氯化钠胁迫(3 g·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.
이강소성임업과학연구원신근잡교배육적6개관목류무성계1년생천삽묘위시재,채용수배시험방법,연구료0～3 g·L~(-1)범위내불동질량농도록화납협박대관목류무성계유묘생장급광합작용적영향.결과표명,저질량농도록화납협박(1～2 g·L~(-1))대근장、근생물량무현저영향,고질량농도록화납협박(3 g·L~(-1))사근장、근생물량현저강저(P<0.05).재록화납협박처리하,묘고、경협생물량、협록소질량분수、정광합속솔화기공도도균저우대조,병수착록화납질량농도제고하강폭도가대(P<0.05).공시관목류무성계중,JW2345화JW2372무성계생장화광합작용수록화납협박영향최소,내염성상대교강;JW1065화JW2334무성계수록화납협박영향최대,내염성상대교약.
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 stress-es 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 tol-erant to salt stress with JWI065 and JW2334 being least tolerant.