CAJ | 학술논문

以来自高寒草地不同海拔的3份野生垂穗披碱草种子为材料，采用培养皿纸上发芽法研究了0%、0.4%、0.6%、0.8%、1.0%和1.2%不同盐浓度对种子萌发的影响，以探讨3份垂穗披碱草种子萌发的耐盐能力。结果表明，低盐环境促进了种子的萌发；随着盐胁迫的增强，种子的发芽率、发芽指数与对照相比均显著下降。当盐浓度达到1.0%时，发芽势均等于0。通过对3份种质材料在盐胁迫下的相对发芽率、相对发芽势、发芽指数等指标的综合评价表明：材料的耐盐性为 G3>G2>G1。海拔与耐盐指标的相关性分析表明，种子的相对发芽率与海拔成正相关，种子的相对发芽势、发芽指数与海拔成负相关，但相关性均不显著。
이래자고한초지불동해발적3빈야생수수피감초충자위재료，채용배양명지상발아법연구료0%、0.4%、0.6%、0.8%、1.0%화1.2%불동염농도대충자맹발적영향，이탐토3빈수수피감초충자맹발적내염능력。결과표명，저염배경촉진료충자적맹발；수착염협박적증강，충자적발아솔、발아지수여대조상비균현저하강。당염농도체도1.0%시，발아세균등우0。통과대3빈충질재료재염협박하적상대발아솔、상대발아세、발아지수등지표적종합평개표명：재료적내염성위 G3>G2>G1。해발여내염지표적상관성분석표명，충자적상대발아솔여해발성정상관，충자적상대발아세、발아지수여해발성부상관，단상관성균불현저。
This paper studied of the saline stress on seeds germination of Elymus nutans from different alti-tude in alpine grassland.The salt tolerance of three Elymus nutans seeds were tested under six salt solutions (0%、0.4%、0.6%、0.8%、1% and 1.2%)by petri dish methods.The results showed that the germination rate increased in the low saline environment.However,the germination rate,germination potential and germination index significantly decreased than the control with the increasing of salt concentration.When the NaCl concen-tration was up to 1%,the germination potential was zero.Based on comprehensive evaluation of potential indica-tors including relative germination rate,relative germination potential,germination index the rank of salt toler-ance of three Elymus nutans was G3>G2>G1 .The correlation analysis between the salt tolerances of Elymus nutans and the altitudes indicated that there was a positive correlations between the relative germination rate and the altitude of the seeds ,there was non-significant negative correlation between the relative germination po-tential,germination index and the altitude of the seeds.