简介：系统科学基于能在他们的努力在很学术的学科以内被使用探索世界的系统的一种通用语言。当前，系统科学盖住象设计的复杂适应系统，有弹性的系统或系统一样的许多不同途径。系统科学的未来扩展之一在一阶的系统科学上作为反射研究的一个新领域通过秒顺序系统科学的应用程序来。这篇文章一般来说在一阶的科学和秒顺序科学的关系上提供一个一般背景然后继续为一阶的系统科学为质量控制并且为革新为秒顺序系统科学和他们的潜力勾略一个基本轮廓。

简介：Droughtisthemajorabioticstressfactorthatlimitsriceproductionworldwide.Toevaluatetheosmoticstressresponsesinricevarietiesunderdroughtcondition,atotalof42high-yieldingricevarietieswerecollectedfromvariousresearchstationsofKeralaAgriculturalUniversityinIndia.Theexperimentalsetupcomprisesofinitialhydroponictreatmentsatdifferentosmoticpotentials,artificiallyinducedbydesiredstrengthsofpolyethyleneglycol(PEG6000),andfollowedbythepotplantedexperimentsintherain-out-zone.Theactivitiesofantioxidantenzymes,relativewatercontent,cellmembranestability,photosyntheticpigments,prolinecontent,alongwithplantgrowthparametersofthevarietiesunderdroughtconditionwereevaluated.Moreover,thestandardscoresofthesericevarietieswereassessedunderstressandrecoveryconditionsbasedonthescoringscaleoftheStandardEvaluationSystemforrice.Amongthe42ricevarieties,weidentified2ricevarieties,SwarnaprabhaandKattamodan,withlessleafrolling,betterdroughtrecoveryabilityaswellasrelativewatercontent,increasedmembranestabilityindex,osmolyteaccumulation,andantioxidantenzymeactivitiespointedtowardstheirdegreeoftolerancetodroughtstress.Thepositiveadaptiveresponsesofthesericevarietiestowardsdroughtstresscanbeusedinthegeneticimprovementofricedroughtresistancebreedingprogram.

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