WildwheatspeciesEmmerwheatbread wheatDDAABBAABBAABBDDT.tauschiiT searsii?T. turgidumT.aestivumT.monococcumEvolution of bread wheat
Evolution of bread wheat T. monococcum T. searsii? Wild wheat species T. turgidum T. tauschii T. aestivum Emmer wheat bread wheat AA BB AABB DD AABBDD
B.oleracea,20-18迎福安光步CabbageCaulitlowerBrocooliKaleKohirabiBrussels sproutsnngH=9B.carnataBnapus2#=382n=3kRutabagaAbyssinianmustardOilrapenE8片=107=8natoB campestris,BnigraBquncea2n=202n=162n=36Chinese cabbageBlackmustardLeafmustardTurnipTurnip rape
美款#X42个黑麦14个染色体二倍体染色体KRINKKKRKEKX名高商IK养Y杂种分射苗四焙体）28个染色体染色体焙饮就财花烤城欢高鸡#品56个染色体大八倍体小黑麦培育过程
八倍体小黑麦培育过程
加倍物种A（AA)）AAAA（同源多倍体）加倍加倍1CAB1AAB1B1AAAAB1B1B1B1（异源多倍体）（同源异源多倍体）AB1B1（倍半二倍体）加倍物种B1(B1B1)B1B1 B1B1（同源多倍体）00I00加倍F1CB1B2DB1B1B2B2（区段异源多倍体）00I0I0加倍物种B2(B2B2)B2B2B2B2（同源多倍体）图8一1各种多倍体的关系示变图
多倍体的概念与类型2.多倍体的类型同源多倍体形成多倍体的染色体组来自同一物种异源多倍体由两个或两个以上不同物种的染色体组组成异数多倍体（非整数多倍体）细胞中染色体的数目不为基数的整倍性