CAJ | 학술논문

试验以刚开花的3年生巨峰葡萄实生苗为材料,分析其童区、转变区及成年区叶片中核酸、半乳糖醛酸和可溶性糖含量的变化.结果表明:每克鲜重叶片中RNA含量由童区至转变区急剧上升达最大值,在转变区保持在较高水平上,开花以上节位其含量降低,总核酸含量的变化也是如此;RNA/DNA比值在刚进入转变区达峰值,然后逐渐降低;半乳糖醛酸含量在童区和成年区均较低,在转变区出现最大值;非还原糖含量随阶段发育的提高而增加,在成年区大量开花部位降低,近植株顶端无花序部位复又增加;还原糖含量在进入转变区时达最大值,然后迅速降低,在转变区及成年区处于较低水平.
시험이강개화적3년생거봉포도실생묘위재료,분석기동구、전변구급성년구협편중핵산、반유당철산화가용성당함량적변화.결과표명:매극선중협편중RNA함량유동구지전변구급극상승체최대치,재전변구보지재교고수평상,개화이상절위기함량강저,총핵산함량적변화야시여차;RNA/DNA비치재강진입전변구체봉치,연후축점강저;반유당철산함량재동구화성년구균교저,재전변구출현최대치;비환원당함량수계단발육적제고이증가,재성년구대량개화부위강저,근식주정단무화서부위복우증가;환원당함량재진입전변구시체최대치,연후신속강저,재전변구급성년구처우교저수평.
Contents of nucleic acid, galacturonic acid and soluble sugar in leaves of three-year-old self-rooted Kyoho seedlings which had just entered into reproductive state were determined in the course of their phase development. The results showed: 1 ) content of ribonucleic acid (RNA) dramatically soared from the juvenile zone upward to a highest value at the transition zone and then did not declined until the apex was approached,and so did the total nucleic acid amount; 2) a peak of RNA/DNA ratio occurred at the lowest node where the tendril appeared, followed by a constant decline; 3) content of galacturonic acid in leaves reached its maximum in the transition zone and then declined to and maintained at a relatively low level; 4) there was a progressive increase of leaf non-reducing sugar along the stem up from the juvenile zone to the adult zone which followed by a decrease and a final increase as the apex was approached; 5) amounts of reducing sugar and total soluble sugar in leaves reached their peaks at transition zone where the tendril appeared for the first time and then declined to and maintained at a relative low level.