CAJ | 학술논문

采用盆栽实验,对多花黑麦草(Lolium multiflourum Lam.)苗期盐胁迫的各项耐盐指标进行综合研究评价,为筛选适宜盐碱地种植的多花黑麦草品种提供理论依据.设置 0%、0.2%2个NaCl盐浓度水平,系统地测定和分析了16个引进多花黑麦草品种苗期植物学指标和生理生化指标.结果表明:0.2% NaCl处理下16个多花黑麦品种平均植株高度、根长、地下部生物量分别显著低于0% NaCl处理(P<0.05);平均地上部生物量低于0% NaCl处理,平均单株茎蘖数略多于0% NaCl处理,但差异不显著;7个品种的可溶性糖含量显著低于0% NaCl处理,11个品种的相对电导率显著高于0% NaCl处理(P<0.05).对相关的植物学指标和生理生化指标聚类分析得出,相对耐盐品种8个,中度耐盐品种4个,相对盐敏感品种4个.
채용분재실험,대다화흑맥초(Lolium multiflourum Lam.)묘기염협박적각항내염지표진행종합연구평개,위사선괄의염감지충식적다화흑맥초품충제공이론의거.설치 0%、0.2%2개NaCl염농도수평,계통지측정화분석료16개인진다화흑맥초품충묘기식물학지표화생리생화지표.결과표명:0.2% NaCl처리하16개다화흑맥품충평균식주고도、근장、지하부생물량분별현저저우0% NaCl처리(P<0.05);평균지상부생물량저우0% NaCl처리,평균단주경얼수략다우0% NaCl처리,단차이불현저;7개품충적가용성당함량현저저우0% NaCl처리,11개품충적상대전도솔현저고우0% NaCl처리(P<0.05).대상관적식물학지표화생리생화지표취류분석득출,상대내염품충8개,중도내염품충4개,상대염민감품충4개.
Salt tolerance indicators of Italian ryegrass (Lolium multiflourum Lam.) at seedling stage were integrated evaluated in order to identify and utilize the suitable germplasm for alkaline soil. Under salt stress at 0% and 0.2% NaCl, the botanical, physiological, and biochemical indicators of Italian ryegrass were determined and analyzed for salt tolerance comparison. The results show that the average plant height, root length, and underground biomass of 16 varieties at 0.2% NaCl were significantly lesser than those at 0% NaCl (P<0.05), the average aboveground biomass was lower than that at 0% NaCl, and the average tiller no. per plant was slightly more than that at 0% NaCl without significant difference. Soluble sugar contents of 7 varieties at 0.2% NaCl were significantly lower than those at 0% NaCl and relative electrical conductivity rate of 11 varieties were significantly higher than those at 0% NaCl (P<0.05). According to the clustering analysis based on the botanical, physiological, and biochemical indicators, the tested 16 varieties were divided into three groups as 8 varieties were relatively salt tolerant, 4 varieties moderately salt tolerant, and 4 varieties relatively susceptive to salt stress.