玉米雜交種種子生物學特性研究.pdf

1、河北農業(yè)大學碩士學位論文玉米雜交種種子生物學特性研究姓名：吳海燕申請學位級別：碩士專業(yè)：作物栽培學與耕作學指導教師：崔彥宏20050620StudyonBiologyCharacteristicsofMaize(ZeaMaysL)HybridSeedsWUhaiyanSupervisor：ProfessorCuiyanhongMajor：CropCultivationandFarmingSystemAbstractThisresearc

2、hselectedfourdifferenttypesofmaizeseeds(32hybridsina11)asexperimentalmaterialstostudythefollowingaspectsofmaizeseeds：thephysicalpropertyandstructuraldifferences，imbibitionsandprotrusioncharacteristics，germinationandseedl

3、ingestablishmentcharacteristics，effectongerminmionandseedlingestablishmentofdifferentsowingdepthandilluminationconditions，andcorrelativit、TamongbiologychameteristiesTheresultsarearfollows：ThereisasignificantcorrelationfP

4、o01)betweenvolumeandweightofmaizeseeds100kernelweightofwaxytypeseedsisthelightest，alsoofthevolume；100kernelvolumeofdenttypeseedsisthebiggesgthesalneastheweightnlecorrelationbetweenspecificgravityandembryodryweightproport

5、ionisnegative，whilethecorrelationbetweenwatercontentandcrestdryweightproportionispositiveThereisnoobviousdifferentiationindifferenttypesofmaizeseedsDifferentpartsofmaizeseedshavedifferentdryweightproportion，aberranceofco

6、ntextandcrestisthemost，thereisanobservablynegativecorrelationamongendospermdryweightproportionandcrestdryweightproportion，codexdryweightproportionandembryonicdryweightproportionaccountforthewholeseeddryweightembryonicdr3

7、weightproportionofwax)typemaizeseedsistheleast，anditsendospermdryweightproportionisthemost；embryonicdryweightproportionofhalfwaxytypemaizeseedsisthemost，anditsendospermdryweightproportionistheleast，nleproportionofembryop

8、roportiontoendospermproportionispositivewhilecorrelationtotheembryonicdryweightproportionisnegativecorrelationtotheendospermdryweightproportionThechangesinthecourseofimbibitionsandprotrusionthroughabsorbingwaterofdiffere

9、nttypesmaizeseedsindifferenttemperatureconditionsaccordto109arithrnfunctiony=aLn(x)b，butthedifferenceamongtherequiredtime，thechangesofseed’swatercontentandthemaxprotrusionrateinthecourseofmaizeseed’simbibitionandprotrusi

10、onthroughabsorbingwaterindifferenttemperatureconditionsishigherAlsothechangesinthecourseofimbibitionandprotrusionthroughabsorbingsteamofdifferenttypesofmaizeseedsaccordtologarithmfunctiony=aLn(x)b，theminimalwatercontento