CAJ | 학술논문

以五山丰占、华航油占、原两优、谷优等4个水稻（Oryza sativa L．）品种幼苗为材料，采用质量分数20％的聚乙二醇4000（Polyethylene Glycol 4000，PEG-4000）对其进行模拟干旱处理，并对处理后水稻幼苗的根长、株高、叶绿素和丙二醛（Malondialdehyde，MDA）含量进行了测定，以研究PEG干旱胁迫对不同水稻品种生长和生理特性的影响．结果表明，不同水稻品种经质量分数20％的PEG-4000处理后，其株高和根系生长均受到不同程度的抑制，水稻幼苗鲜质量和体内所含的自由水下降，叶片叶绿素含量降低，MDA含量增加．
이오산봉점、화항유점、원량우、곡우등4개수도（Oryza sativa L．）품충유묘위재료，채용질량분수20％적취을이순4000（Polyethylene Glycol 4000，PEG-4000）대기진행모의간한처리，병대처리후수도유묘적근장、주고、협록소화병이철（Malondialdehyde，MDA）함량진행료측정，이연구PEG간한협박대불동수도품충생장화생리특성적영향．결과표명，불동수도품충경질량분수20％적PEG-4000처리후，기주고화근계생장균수도불동정도적억제，수도유묘선질량화체내소함적자유수하강，협편협록소함량강저，MDA함량증가．
The effect of polyethylene glycol （PEG） of different rice varieties was studied by using the stress on the growth and physiological characteristics seedlings of four rice varieties （Wu-shan-feng-zhan, Hua-hang-you-zhan, Yuan-er-you and Gu-you） as materials. The root length, fresh height, chloro- phyll and malondialdehyde （MDA） content of the different rice seedlings after simulated drought stress treatment with 20% PEG-4000 were determined. The resuhs showed that the plant height and root growth of different rice varieties was inhibited to a certain extent. The fresh mass and free water content were decreased. The chlorophyll content were lowered and MDA content were increased after the treatment with 20% PEG-4000.