安徽农业科学
安徽農業科學
안휘농업과학
JOURNAL OF ANHUI AGRICULTURAL SCIENCES
2009年
20期
9433-9435
,共3页
维生素C%玉米%干旱胁迫%保护酶%幼苗
維生素C%玉米%榦旱脅迫%保護酶%幼苗
유생소C%옥미%간한협박%보호매%유묘
Vitamin C%Maize%Drought stress%Protective enzyme%Seedling
[目的]揭示维生素C对增强玉米植株抗旱性的作用,为玉米田间施用维生素C提供参考依据.[方法]用不同浓度的维生素C对干旱胁迫下的玉米幼苗进行处理,测定玉米幼苗的形态指标 (叶片长度、植株高度、鲜重、干重和相对含水量)和生理指标[叶绿素含量和过氧化物酶(POD)、超氧化物歧化酶(SOD)活性].[结果]一定浓度的维生素C对玉米幼苗各项指标都产生了明显的影响.在浓度为40 mg/L时,其效果较明显,形态指标叶片长度、植株高度、鲜重、干重和相对含水量分别比对照组上升了4.6%、12.9%、20.8%、20.0%和20.3%;生理指标叶绿素含量和POD、SOD活性也分别比对照组上升了75.6%、24.6%和23.4%.[结论]维生素C可以提高植物体内的水分含量,并在一定程度上调节酶的活性,对细胞膜起到一定的保护作用,提高了玉米的抗旱性.
[目的]揭示維生素C對增彊玉米植株抗旱性的作用,為玉米田間施用維生素C提供參攷依據.[方法]用不同濃度的維生素C對榦旱脅迫下的玉米幼苗進行處理,測定玉米幼苗的形態指標 (葉片長度、植株高度、鮮重、榦重和相對含水量)和生理指標[葉綠素含量和過氧化物酶(POD)、超氧化物歧化酶(SOD)活性].[結果]一定濃度的維生素C對玉米幼苗各項指標都產生瞭明顯的影響.在濃度為40 mg/L時,其效果較明顯,形態指標葉片長度、植株高度、鮮重、榦重和相對含水量分彆比對照組上升瞭4.6%、12.9%、20.8%、20.0%和20.3%;生理指標葉綠素含量和POD、SOD活性也分彆比對照組上升瞭75.6%、24.6%和23.4%.[結論]維生素C可以提高植物體內的水分含量,併在一定程度上調節酶的活性,對細胞膜起到一定的保護作用,提高瞭玉米的抗旱性.
[목적]게시유생소C대증강옥미식주항한성적작용,위옥미전간시용유생소C제공삼고의거.[방법]용불동농도적유생소C대간한협박하적옥미유묘진행처리,측정옥미유묘적형태지표 (협편장도、식주고도、선중、간중화상대함수량)화생리지표[협록소함량화과양화물매(POD)、초양화물기화매(SOD)활성].[결과]일정농도적유생소C대옥미유묘각항지표도산생료명현적영향.재농도위40 mg/L시,기효과교명현,형태지표협편장도、식주고도、선중、간중화상대함수량분별비대조조상승료4.6%、12.9%、20.8%、20.0%화20.3%;생리지표협록소함량화POD、SOD활성야분별비대조조상승료75.6%、24.6%화23.4%.[결론]유생소C가이제고식물체내적수분함량,병재일정정도상조절매적활성,대세포막기도일정적보호작용,제고료옥미적항한성.
[Objective]The reference for the application of vitamin C in maize growth was provided through the research on the resistance-strengthening of maize plant to drought under the treatment of vitamin C. [Method] The maize seedling under drought stress was treated with different concentrations of vitamin C and the morphological indicator of maize seedling(leaf length, plant height, fresh weight, dry weight and content of relative water) and the physiological indicators[content of chlorophyll and activity of peroxidase(POD) and superoxide dismutase(SOD)] were tested. [Results] All kinds of indicators of maize seedling could be significant impacted by the treatment of vitamin C. At the concentration of 40 mg/L, the effect was obvious and the morphological indicators such as leaf shape length, plant height, fresh weight, dry weight and content of relative water were 4.6%, 12.9%, 20.8%, 20.0% and 20.3% more than that of the control group, respectively; and the physiological indicators including the content of chlorophyll and the activity of POD and SOD were 75.6%, 24.6% and 23.4% higher than that of the control group, respectively. [Conclusion] The treatment of vitamin C could increase the moisture content in plants; to some extent, regulate the enzyme activity; played a role in the protection of the cell membrane and improve the resistance of maize plant to drought.
