CAJ | 학술논문

从烤烟根系分泌物中筛选出能够有效降解烟碱和水杨酸等主要成分的赖氨酸芽孢杆菌和寡养单胞菌两种细菌，以5 mL菌液和45 mL分泌物混合施入育苗盘中进行幼苗培养并测定和分析其对烤烟幼苗光合特性、叶绿素荧光特性、叶绿素含量和幼苗根系生长的差异。结果表明，含有降解菌的处理液可提高幼苗生长过程中的光合作用，促进根系生长，同时含寡养单胞菌和赖氨酸芽孢杆菌的处理液对烤烟根系分泌物降解效果最佳，只含有降解水杨酸的寡养单胞菌和赖氨酸芽孢杆菌的降解液处理次之，不含降解菌的处理液对烤烟幼苗生长有抑制作用。盆栽试验中，两种菌均能够降低烤烟根系分泌物对烤烟生长的抑制作用，当两种菌混合后效果最好。
종고연근계분비물중사선출능구유효강해연감화수양산등주요성분적뢰안산아포간균화과양단포균량충세균，이5 mL균액화45 mL분비물혼합시입육묘반중진행유묘배양병측정화분석기대고연유묘광합특성、협록소형광특성、협록소함량화유묘근계생장적차이。결과표명，함유강해균적처리액가제고유묘생장과정중적광합작용，촉진근계생장，동시함과양단포균화뢰안산아포간균적처리액대고연근계분비물강해효과최가，지함유강해수양산적과양단포균화뢰안산아포간균적강해액처리차지，불함강해균적처리액대고연유묘생장유억제작용。분재시험중，량충균균능구강저고연근계분비물대고연생장적억제작용，당량충균혼합후효과최호。
Two Lysine Bacillus and Stenotrophomonas strains were previously selected from exudates of flue-cured tobacco to be able to depredate effectively nicotine, salicylic acid and other secretions. A mixture of 5ml bacterial suspension and 45 mL secretions was added into the seedling trays to test their effects on flue-cured tobacco seedling photosynthetic characteristics, chlorophyll fluorescence characteristics, chlorophyll content and root growth. The results showed that the exudates containing degrading bacteria could improve photosynthesis during the process of seedling growth, and promote the growth of root. The degradation effect of flue-cured tobacco root exudates containing both Stenotrophomonas Bacillus and Lysine bacteria was the best, followed by the degradation solution that only contained Lysine Bacillus or Stenotrophomonas strains, and that the treating solution without degrading bacteria inhibited the growth of flue-cured tobacco seedlings. In the pot experiment, both bacteria were capable of reducing the inhibition of tobacco growth by root exudates, with the best effect observed when both bacteria were used.