《作物育种学总论》试题库（examination questions library of crop breeding science）

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1、《作物育种学总论》试题库（ExaminationquestionslibraryofCropBreedingScience）ExaminationquestionslibraryofCropBreedingScienceThree,judgetheproblem(correcthit+,wrongtohit-)Introduction1.Varietiesarenotbotanical,butagricultural.2.Varietyisthesmallesttaxoninbotany.3,naturalevolutionandartificialevolutionarenoto

2、nlydifferent,butalsorelated.4,thereisacontradictionbetweenartificialselectionandnaturalselectioninmanyaspectsofplantevolution.5,artificialselectionisconsistentwithnaturalselectioninplantevolution.6.Modernbreedingisthescienceofcontrollingbiologicalgeneticvariationandartificialevolution.7,cropbr

3、eedingisthescienceofstudyingthetheoryofbreedingfinecropvarieties.8,finevarietiesgenerallyhaveregionalandtemporal,indifferentregionsorthesameregionatdifferenttimes,becauseoftherequirementsofproductionandlifeisdifferent,therequirementsofvarietiesarenotthesame.Typesandtypesofcroppropagation9,only

4、sexualreproductioncanproduceseeds.10,thegeneticstabilityofselfpollinatedcropvarietiesdependsonthehomozygosityofindividualgenotypes.Thegeneticstabilityof11cropvarietiesandcrosspollinationgroupsrelyonrandommatingbetweenindividualswithinthegrouptomaintain.Homozygousgeneticstable12cropvarietiesand

5、crosspollinationgroupsrelyonindividualgenotypestoensure.13,theselfinbreedingofgeneralselfpollinatedcropswasslight,andtheinbreedingofinbredcropswasstronglydegraded.14,theselfinbreedingofgeneralselfpollinatedcropsisstrong,andtheinbreedingofinbredcropsisslight.germplasmresource15,croporigincenter

6、shavetwomaincharacteristics,namely,genediversityanddominantgenefrequencyarehigher.13,croporigincentershavetwomaincharacteristics,namely,genediversityandrecessivegenefrequencyarehigher.17,storageandpreservationaremainlyusedtocontrolthetemperatureandhumidityconditionsduringstoragetomaintainthevi

7、abilityofgermplasm.18,storageandpreservationismainlytocontrolthestorageofO2andCO2,tomaintainthevitalityofgermplasm.19,thepurposeofpreservinggermplasmistomaintainacertainamountofgermplasmsamples.20,moderngeneticbreedingshouldnotonlyutili