CAJ | 학술논문

[目的]探讨不同浓度ABA的施用对油菜光合特性及产量构成因素的影响，分析了外源ABA浓度与油菜产量之间的关系，为制定油菜高产栽培措施提供理论依据。[方法]在油菜终花期，采用浓度分别为1、2、100和200μmol／L的ABA对油菜角果进行喷施处理，测定了喷施后0、5、10和15d的角果光合特征及其对产量和产量构成因素的影响。[结果]不同的外源ABA施用浓度对油菜光合及产量有显著影响。高浓度的ABA处理降低了油菜的光合、水分利用效率（WUE）以及产量，而低浓度的ABA处理后这些指标均显著提高。[结论]ABA对植物的促进或是抑制作用取决于外源ABA的施用浓度与内源激素的相互作用关系。低浓度ABA能够提高油菜的产量可能与它提高了油菜角果的水分利用率（WUE）有关。
[목적]탐토불동농도ABA적시용대유채광합특성급산량구성인소적영향，분석료외원ABA농도여유채산량지간적관계，위제정유채고산재배조시제공이론의거。[방법]재유채종화기，채용농도분별위1、2、100화200μmol／L적ABA대유채각과진행분시처리，측정료분시후0、5、10화15d적각과광합특정급기대산량화산량구성인소적영향。[결과]불동적외원ABA시용농도대유채광합급산량유현저영향。고농도적ABA처리강저료유채적광합、수분이용효솔（WUE）이급산량，이저농도적ABA처리후저사지표균현저제고。[결론]ABA대식물적촉진혹시억제작용취결우외원ABA적시용농도여내원격소적상호작용관계。저농도ABA능구제고유채적산량가능여타제고료유채각과적수분이용솔（WUE）유관。
[Objective] The aim was to evaluate the effects of different concentrations of ABA on photosynthetic characteristics of pods and yield of Brassica napus and analyze the relationships between ABA concentration and yield components, to provide theoretical basis for cultivation of high-yield rapeseed. [Method] At the end of flowering stage, the rape plants were separately sprayed with 1, 2, 100 and 200μmol/L of ABA; photosynthetic parameters, water use efficiency （WUE）, yield and yield components of the rape plants were investigated 0, 5, 10 and 15 d later, respectively. [Result] ABA treatment with different concentrations significantly changed pod photosynthetic parameters and yield components of rapeseed. Low concentra- tions of ABA could improve pod＇s net photosynthetic rate and yield components while high concentrations had the contrary effect. [Conclusion] Whether ABA func- tioned in inhibiting or promoting role might depend on the interaction between endogenous hormone levels and exogenous ABA concentration. Improvement of WUE would be the main reason for yield increasing.