第24章
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  Prof。H。Lecoq,whohasmadeagreatnumberofcrossingsbetweenthedifferentlycolouredvarietiesofMirabilisjalapa(11/122。’Geograph。Bot。

  del’Europe’tome31854page405;and’DelaFecondation’1862page302。)

  findsthatintheseedlingsthecoloursrarelycombine,butformdistinctstripes;orhalftheflowerisofonecolourandhalfofadifferentcolour。Somevarietiesregularlybearflowersstripedwithyellow,white,andred;butplantsofsuchvarietiesoccasionallyproduceonthesamerootbrancheswithuniformlycolouredflowersofallthreetints,andotherbrancheswithhalf—and—halfcolouredflowers,andotherswithmarbledflowers。Gallesio(11/123。’TraiteduCitrus’1811page45。)crossedreciprocallywhiteandredcarnations,andtheseedlingswerestriped;butsomeofthestripedplantsalsoboreentirelywhiteandentirelyredflowers。Someoftheseplantsproducedoneyearredflowersalone,andinthefollowingyearstripedflowers;orconversely,someplants,afterhavingbornefortwoorthreeyearsstripedflowers,wouldrevertandbearexclusivelyredflowers。ItmaybeworthmentioningthatIfertilisedthePURPLESWEET—PEA(Lathyrusodoratus)withpollenfromthelight—colouredPAINTEDLADY:seedlingsraisedfromthesamepodwerenotintermediateincharacter,butperfectlyresembledeitherparent。Laterinthesummer,theplantswhichhadatfirstborneflowersidenticalwiththoseofthePAINTED

  LADY,producedflowersstreakedandblotchedwithpurple;showinginthesedarkermarksatendencytoreversiontothemother—variety。AndrewKnight(11/124。’Transact。Linn。Soc。’volume9page268。)fertilisedtwowhitegrapeswithpollenoftheAleppogrape,whichisdarklyvariegatedbothinitsleavesandfruit。Theresultwasthattheyoungseedlingswerenotatfirstvariegated,butallbecamevariegatedduringthesucceedingsummer;

  besidesthis,manyproducedonthesameplantbunchesofgrapeswhichwereallblack,orallwhite,orlead—colouredstripedwithwhite,orwhitedottedwithminuteblackstripes;andgrapesofalltheseshadescouldfrequentlybefoundonthesamefoot—stalk。

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