CAJ | 학술논문

对盆栽烤烟8277'与农大202'喷施外源激素GA_3与ABA,研究其对烟草叶片钾素累积效应的影响.结果表明:喷施一定浓度的GA_3(100 mg·L~(-1))促进了烟草叶片内源激素GA_3与IAA的合成,且促进了各个时期烟草叶片中的相对含钾量,对'8277'效果更为明显;喷施GA_3在一定程度上抑制了烟草成熟期各个部位烟叶绝对含钾量的提高;喷施一定浓度的ABA(20 mg·L~(-1))抑制了烟草叶片中内源激素IAA与GA_3的合成,2个供试品种喷施ABA后各个时期叶片相对含钾量均显著低于对照,但ABA增加了2个供试品种成熟期各部位烟草叶片的干物质量,提高了成熟期叶片中的绝对含钾量.
대분재고연8277'여농대202'분시외원격소GA_3여ABA,연구기대연초협편갑소루적효응적영향.결과표명:분시일정농도적GA_3(100 mg·L~(-1))촉진료연초협편내원격소GA_3여IAA적합성,차촉진료각개시기연초협편중적상대함갑량,대'8277'효과경위명현;분시GA_3재일정정도상억제료연초성숙기각개부위연협절대함갑량적제고;분시일정농도적ABA(20 mg·L~(-1))억제료연초협편중내원격소IAA여GA_3적합성,2개공시품충분시ABA후각개시기협편상대함갑량균현저저우대조,단ABA증가료2개공시품충성숙기각부위연초협편적간물질량,제고료성숙기협편중적절대함갑량.
The effect of exogenous GA3 and ABA treatment on endogenous hormone content and potas-sium accumulation was investigated in the tobacco leaves strains 8277 and ND202 grown in pots. The re-sults showed that GA3at 100 mg·L~(-1) increased the content of endogenous IAA and GA3 ,and enhanced the relative potassium content during all the development periods,especially in strain 8277. GA_3 treatment in-hibited the increasing of absolute potassium content in leaves of all the layers during ripening period. ABA at 20 mg·L~(-1) restrained the synthesis of endogenous IAA and G A_3,both strains had a lower relative po-tassium content. ABA treatment increased the dry substance and the absolute potassium content in leaves of all the layers during ripening period in two strains.