CAJ | 학술논문

[目的]研究干旱胁迫对甘蔗叶片水分和叶绿素荧光参数的影响,为甘蔗生产及评价研究提供依据.[方法]选取7个抗旱性不同的甘蔗品种,在苗期进行干旱胁迫,并测定胁迫条件下甘蔗叶片水分含量和叶绿素荧光参数的变化.[结果]甘蔗叶片水势和相对含水量与土壤相对含水量存在一定的内在联系,耐旱强的品种对土壤水分的利用率较高;相关分析和因子分析表明茁期干旱存活率、Fc/Fm、叶片水势和相对含水量可被用作抗旱性评价指标.[结论]水势表现为一个相对独立的影响因子,对甘蔗抗早性有支配作用,并验证了Fv/Fm作为甘蔗抗旱评价指标的可靠性.
[목적]연구간한협박대감자협편수분화협록소형광삼수적영향,위감자생산급평개연구제공의거.[방법]선취7개항한성불동적감자품충,재묘기진행간한협박,병측정협박조건하감자협편수분함량화협록소형광삼수적변화.[결과]감자협편수세화상대함수량여토양상대함수량존재일정적내재련계,내한강적품충대토양수분적이용솔교고;상관분석화인자분석표명촬기간한존활솔、Fc/Fm、협편수세화상대함수량가피용작항한성평개지표.[결론]수세표현위일개상대독립적영향인자,대감자항조성유지배작용,병험증료Fv/Fm작위감자항한평개지표적가고성.
[Objective] The aim was to explore the effects of water stress on leaf water and chlorophyll fluorescence parameters of sugarcane seedling,as well as to provide basis for the study on sugarcane production and evaluation.[Method]Seven different sugarcane varieties were studied at the seedling stage under drought stress,and the changes of leaf water and chlorophyll fluorescence parameters under stress conditions were detected. [Result] leaf water potential,leaf relative water content and soil relative water content showed a certain amount of internal relationship,the sugarcane varieties that had more tolerant to drought had higher utilization rate of soil water;the correlation analysis and factor analysis suggested that the survival rate at seedling stage under drought stress,Fv/Fm,leaf water potential and relative water content could be used as drought resistance evaluation indicators. [Conclusion] As a relatively independent influencing factor,water potential had dominating effect on drought resistance,and the reliability of Fv/Fm as drought resistance evaluation indicator had been verified.