CAJ | 학술논문

以抗旱型烤烟品种‘农大202'及一般型烤烟品种‘NC89'和‘K326'为材料,采用盆栽试验研究了干旱胁迫对根系生长和生理特性的影响,以明确各烟草品种的抗旱能力及其与根系生长和生理特性的关系.结果显示:严重干旱胁迫之后各烤烟品种根系鲜重、干重上升,而根系活力、根系吸收面积以及根系SOD和POD活性等根系生理指标则呈下降趋势.在干旱胁迫条件下,‘农大202'的根系总吸收面积、活跃吸收面积、根系活力、SOD活性和POD活性均显著高于两对照品种‘NC89'和‘K326',但其根系鲜重和干重等生物量并不具有太大的优势.研究表明,烟草的根系生长和生理特性对环境水分条件的响应存在明显的基因型差异;在干旱胁迫条件下, ‘农大202'根系能保持较高总吸收面积、活跃吸收面积、根系活力和保护酶活性,是其具有较强抗旱性的生理基础.
이항한형고연품충‘농대202'급일반형고연품충‘NC89'화‘K326'위재료,채용분재시험연구료간한협박대근계생장화생리특성적영향,이명학각연초품충적항한능력급기여근계생장화생리특성적관계.결과현시:엄중간한협박지후각고연품충근계선중、간중상승,이근계활력、근계흡수면적이급근계SOD화POD활성등근계생리지표칙정하강추세.재간한협박조건하,‘농대202'적근계총흡수면적、활약흡수면적、근계활력、SOD활성화POD활성균현저고우량대조품충‘NC89'화‘K326',단기근계선중화간중등생물량병불구유태대적우세.연구표명,연초적근계생장화생리특성대배경수분조건적향응존재명현적기인형차이;재간한협박조건하, ‘농대202'근계능보지교고총흡수면적、활약흡수면적、근계활력화보호매활성,시기구유교강항한성적생리기출.
The experiment were carried out to study the effects of drought stress on growth and physiological characteristics of roots among three stress,the root biomass including root fresh weight and root dry weight increased,whereas,the root activity,root absorbing area,SOD activity and appeared significantly greater root total absorbing area,active absorbing area,SOD activity and POD activity,but the root biomass including fresh weight and dry weight did not have significant difference.In conclusion,there are obvious differences among flue-cured tobacco genotypes in root growth and physiological characteristics,and their activity and POD activity,more root total and active absorbing area under seriously drought stress,which were the physiological basis of stronger drought resistance.