有棱丝瓜种子催芽试验

有棱丝瓜种子催芽试验 凰?黜@凹嚏晷@瞧@匿岛雁@髑@_L@@VVo1.6NO.3ResearchNotes Ribbedtowelgourdseedgermination HuangShaoli,ChangShaodong,andZhouXiannu GuangzhouAgriculturalScientificResearchInstitute,Guangzhou510308,China AgriculturalScientificResearchInstituteofBaiyunPrefecture,Guangzhou510425,China cceptedJune15,2005) Abstract:Theinfluenceofdifferentconditionsonribbedtowelgourdseedgerminationwastestedinthis paper.Resultsshowedthattheseedsgerminatingenergyandgerminationpercentagewereincreased evidentlyunderthetreatmentofdippinginnormalwatertemperaturefor4hoursanddryingoutfor1houra t 30~C. Keywords:ribbedtowelgourd,seedgermination,germinationpercentage,germinatingenergy Germinatingenergyandgermination percentageofmelonseedsarediversityamong differentvarieties.Acceleratinggerminationisusedto improvethegerminationpercentageandcultivate strongseedling.Thestudywascarriedouttodiscuss theeffectsofdifferentseedgerminationmethodson ribbedtowelgourdseedgerminationpercentage. Materials&methods Materials Theexperimentribbedtowelgourdswere Xiatang1producedbyCollegeofHorticulture,South ChinaAgriculturalUniversityandLvsheng1 producedbyGuangzhouVegetableScientific ResearchInstitute. Methods TheexperimentwascarriedoutatGuangzhou AgriculturalScientificResearchInstitute,Baiyun 25 district,Guangzhou.300seedsofeachvarietywere dippedinwater(25?)for4hours,thenseparatedin6 groupsr50seedsofeachgroup).Twotreatments:(A) threegroupsofseedswereblottedupbyfilterpape~ airedfor1hour,placedonpetridisheswithmoist filterpaperandcoveredwithanothermoistfilterpaper一 (B)without1-hourairing,othergroupofseedswere directlyplacedonthepetridishesandcoveredwith moistfilterpaper.Weonlycalculatedseeds germinationpercentageinthefirst3daysbecausethe cotyledonswerealwaysetiolatedandputrescentafter 3days,whilethegerminatingenergywasinvestigated inthefirst2days. Resultsandanalyses Table1istheresultofXiatang1.The germinationpercentageandgerminatingenergyof methodAwererespectively8.7%and15.3%higher 如@嘲@凹可凹嚅,函@瞪@匡函礓@衄@@@Vo1.6NO.3ResearchNotes thanthoseofmethodB.,testshowedthat:energyt=3.101>~05.Therearesignificantdifferences germinationpercentaget=-3.250>~05;germinatingbetweenmethodAandB Table1Xiatang1germinationpercentage&sproutstatustatistics(unit:granule) B (CK) l7 29 29 l8 l3 l2 l0 3 l 45 45 42 Table2istheresultofLvsheng1,the germinationrateandgerminatingenergyofmethodA wererespectively20.6%and21.3%higherthanthose ofmethodB.,testshowedthat:germinationrate 90.0% 90.0% 84.0% 70.0% 84.0%88.0%78.7% 82.0% t=3.727>t005;germinatingenergyt=-3.206>~05, meaningthesignificantdifferencesbetweenmethodA andB. — Table2Lvsh — eng1germinat — ion — percentage&sproutstatusstatistics(unit:granule) B (CK) l7 20 14 l6 l6 l3 38 38 30 76.0% 76.0% 60.0% 66.0% 72.0%70.7%64.0% 54.0% Seedgerminationneeds2conditions:?seeds shouldfinishpreparationforgermination;?proper outsideconditions,especiallythehumidity, 26 temperature,atmosphere,andlight.Thisexperiment wascarriedoutinthelaboratorywherethehumidity, temperature,atmosphereandlightwerechangeless ,三,@知@凹凹嚅如8@喱@匡舀匡@衄??@Vo1.6NO.3ResearchNotes duringthegermination.Thekeypointsofgerminationfactorofrespiratoryrateinthesecondphase.Thete sta arewhethertheairpassedthetestaandhowmuchofribbedtowelgourdaredensewithsmallpores, theypassed,thatishowtoimprovethepermeationmakingmoredifficultforoxygenandwaterentering abilityofthetesta.MethodAintheexperimentwas appliedtoremovethewatermembraneandimprove thepermeationabilitybydryingthecapsuleandairing for1hour,inthatwaythegerminationpercentageand germinatingenergywereimproved. Seedsgerminationfollowsfourphasesaccording tophysiologicalprocesses:?.quickbreath(thefirst 10hours)?stagnatedbreath(1O-25hours)?the 2以breathfastigium(breakthroughtesta)?breath fallingdown.Oxygensupplyisthemainlimited andexpellingC02whenthetestawerecoveredby watermembrane,andthereforeinfluencedthe physiologicalreactioninseedgermination.The functionoffilterpaperdriedtreatmentandanhour airingafterseedpresoakingistoremovethewater membrane,meettherequirementofphysiological reactionduringthegermination,andimprovethe germinationrateandgerminatingenergyofribbed towelgourdfinally. References JiangsuAgriculturalInstitute,1992.Plantphysiology.[M]physiology 【M].SouthChinaAgriculturalUniversityPress AgriculturalPress,Beijing,China.224~227 LiShenglong,1991.Seedsgrowthandmetabolized Guangzhou,China.214 有棱丝瓜种子催芽试验 黄绍力常绍东周显奴 (1广州市蔬菜科学研究所广东广州510308) (2广州市白云区蔬菜科学研究所广东广州510425) 摘要:有棱丝瓜种子经过浸种(水温为常温,浸种4小时)后,通过用滤纸吸干种皮上的水分,并晾置 一定时间(一般为1个小时)的处理,再进行恒温(30~C)催芽,能够显着地提高种子的发芽率和发芽势. 关键词:有棱丝瓜,催芽,浸种 27