CAJ | 학술논문

研究水分胁迫对棉花叶片细胞膜伤害、保护酶活性及产量的影响.结果表明,在水分胁迫下,各棉花品种各部位果枝叶片中MDA含量明显增加,增加幅度因品种、时期和植株部位不同差异较大,其中,以中铃品种果枝叶片中MDA含量增加幅度最小.水分胁迫下各品种、各部位果枝叶片SOD、POD酶活性在棉铃发育的多数时期都明显升高,其中上、中部果枝叶SOD酶活性在棉铃30 d日龄时最低,并且这一规律不因品种类型和果枝区位而改变;中铃品种上部和下部果枝叶SOD酶活性在干旱胁迫下增加的幅度大于大铃和小铃品种;就不同区位果枝叶各时期总体情况而言,以中部POD酶活性最高,下部次之,上部最低.干旱胁迫下中铃品种的铃重和产量变化幅度最小,表现出较强的耐旱性.
연구수분협박대면화협편세포막상해、보호매활성급산량적영향.결과표명,재수분협박하,각면화품충각부위과지협편중MDA함량명현증가,증가폭도인품충、시기화식주부위불동차이교대,기중,이중령품충과지협편중MDA함량증가폭도최소.수분협박하각품충、각부위과지협편SOD、POD매활성재면령발육적다수시기도명현승고,기중상、중부과지협SOD매활성재면령30 d일령시최저,병차저일규률불인품충류형화과지구위이개변;중령품충상부화하부과지협SOD매활성재간한협박하증가적폭도대우대령화소령품충;취불동구위과지협각시기총체정황이언,이중부POD매활성최고,하부차지,상부최저.간한협박하중령품충적령중화산량변화폭도최소,표현출교강적내한성.
The effects of water stress on cell damage, activities of protective enzymes and yield of different boll-weight genotypes in cotton were studied.The result showed that: under water stress, the content of MDA in these genotypes increased significantly according to both each genotype and each position and the increasing extent varied greatly with genotypes, stages and positions.Among the three species, the middle-boll genotype increased the least under water stress, the activities of SOD and POD increased at different position and for different genotypes in the most time, the activities of SOD in upper branch and middle branch leaves were the lowest at the 30-days age, and the changes were the same according to different position and for different genotypes, the change of the activity of SOD in upper branch and bottom branch leaves with middle-boll genotype was more obvious than big-boll genotype and small-boll genotype.So far as the branch leaves of different locations at every period were concerned, the activity of POD in middle branch was the highest according to positions and stages, and the bottom branch was the second, and the upper branch was the lowest.The decreasing extent of boll weight and yield with middle-boll variety was the least which indicated that middle-boll genotype has higher drought tolerance ability than the other genotypes.