简介：有在家和国外的好吃的质量的60常规装饰用的梨树米饭就职的差异用SSR分子的标记，农学的特点和味道特征被分析。290等位基因的一个总数在72SSRloci在60就职被检测，高类似系数在0.600和0.924之间变化。染色体5上的loci在平均等位基因数字显示出最大的价值。另外，大多数SSRloci能检测3～4等位基因。UPGMAdendrogram基于基因类似系数的簇分析证明米饭就职的部分的组织趋势是地理相关的并且大多数在江苏省的米饭就职，中国一起被聚类。而且，来自南方的许多国内就职和在中国的北方起源接近了外国装饰用的梨树米饭变化，从外国高质量的来源由他们的家谱起源证明了。为味道特征，尽管他们来自不同地理区域，有优秀味觉的就职的部分清楚地被聚类进一个范畴，它显示一些变化的味道特征主要是遗传上坚定的。另外，有好味觉的装饰用的梨树米饭的农学的特点可能仔细与他们的地理起源，而是在优异味道特征和农学的特点之间的关系被联系应该进一步被澄清。

简介：Apopulationofricebrownplanthopper(BPH)NilaparvatalugenscollectedfromapaddyfieldinHangzhouwassuccessivelyrearedonsusceptiblericeTaichungNative1(TN1)inalaboratoryfreefrominsecticidesformorethan14generations.Thechangesinsusceptibilitytoinsecticidesandecologicalfitnessondifferentresistantricevarietiesweremonitoredineachgeneration.Theresistanceratiotoimidaclopridsharplydeclinedwiththesuccessionofrearinggenerationswithoutinsecticidesfrom359.94-foldatF1to6.50-foldatF14comparedwiththesusceptiblestrain,andtheresistanceratiotochlorpyrifoswasfrom9.90-foldatF1to5.94-foldatF14.Nymphaldurationandweightsofnewlyhatchedfemaleadultsweresignificantlyaffectedbyricevariety,generationandtheirinteractions,butnymphalsurvivalwassignificantlyaffectedbythegenerationonly.Theratioofbrachypterousadultsinmaleswasaffectedbythegenerationandgeneration×varietyinteraction,whereasnodifferencewasfoundinfemales.Nymphaldurationextendedwithincreasinggenerations,andthefemalenymphaldurationwasshorterinthesusceptiblevarietyTN1thanthoseintheresistantvarietiesIR26andIR36.Inaddition,thefemaleadultweightinTN1washigherthanthoseinIR26andIR36.TheseresultsindicatedthattheresistanceoffieldBPHpopulationtoinsecticideswasreversedafterseveralgenerationsofno-exposuretoinsecticides,andtheecologicalfitnessinTN1washigherthanthoseinIR26andIR36.ThesefindingssuggestedtherationalandreduceduseofinsecticidesincombinationwiththemanipulationofresistantricevarietieswouldbeeffectiveforBPHmanagement.

简介：ThaijasminericeKDML105isconsumedaroundtheworld.BKOS,PKOSandTKOSarenewcultivarsproducedfromlow-energyionbeaminductioninKDML105.ThepurposeofthisstudyistocomparethemorphologyandanatomybetweenKDML105andthethreenewcultivars.Seedsofthefourcultivarsweregerminatedandgrowninpotsuntilfloweringphase.Theplants'organswereobservedandthelengthsofculms,ligules,leavesandpaniclesweremeasured.Leafsurfaceareawascalculatedandnumbersofroots,spikeletsandtillerswerecounted.BKOSandPKOShadsignificantlyshorterculmsthanKDML105andTKOS.ThelargestleafareawasfoundinKDML105followedbyTKOS,BKOSandPKOS,respectively.NumbersofrootsandtillersinBKOSandTKOSweresignificantlyfewerthanthoseinKDML105andPKOS.ThenumberofspikeletsperplantinBKOSwasthelowestamongallcultivars.Foranatomicalcomparison,crosssectionsofculmsandrootswereobserved.Allplantshadasimilararrangementoftissues,butthenumberandsizeofcellsweredifferent.Furthermore,longitudinalsectionsofculmsshowedthatthelengthsofepidermalandparenchymacellsweredirectlyrelatedwiththelengthoftheculm.Tocomparetheleaves,bothstomataandepidermalcellswerecountedandthelengthsoftheguardcellsweremeasured.ThelengthsofguardcellsofBKOSandPKOSwereshorter,butthestomataldensityandthestomatalindexweresignificantlygreaterthanthoseofKDML105.ForTKOS,thoughthelengthofguardcellswasshorterthanthatinKDML105,thedifferencewasnotsignificant.However,thestomataldensityandstomatalindexweresignificantlyhigherthanthoseinKDML105.