新疆12种十字花科植物核型报道

摘要

Using cytological methods,chromosome numbers and karyotype of 12 species of Brassicaceae were observed. Their were as follows: 2n = 2x = 22 = 20m + 2sm for Isatis tinctoria ; 2n = 2x = 14 =8m (2SAT)+ 6sm for Lachnoloma lehmannii; 2n=2x =16 = 16m for Berteroa incana ; 2n=2x =14 = 6m + 8sm for Dontostemon elegans ; 2n=2x = 14 = 8m+6sm for Leiospsra exscapa ; 2n=2x =12 = 8m + 4sm for Cithareloma vernum; 2n=ix =28 = 28m for Oreoioma violaceum ; 2n=2x =14= 14m for Erysimum silic-ulosum; 2n = 2x = 14 = 8m + 6sm for Sisymbriopsis mollipila ; 2n = 2x = 14 = 14m for Neotorularia korolkovi ; 2n = 2x =12= 12m for Sophiopsis annua ; 2n = 2x = 12 = 12m for Smeloxvskia calycina. The chromosome number,number and position of SAT,karyotype formula, karyotype classification,arm ratio, relative arm length and karyotypic anisomerous index,etc were analyzed.%利用细胞学方法观察十字花科12种植物的染色体和核型:菘蓝(Isatis tinctoria),2n=2x=22=20m+2sm;绵果荠(Lachnoloma lehmannii),2n=2x=14=8m (2SAT) +6sm;团扇荠(Berteroa incana),2n=2x=16=16m;扭果花旗杆(Dontostemon elegans),2n=2x=14=6m+8sm;无茎光籽芥(Leiospsra exsca pa),2n=2x=14=8m+6sm;对枝芥(Cithareloma vernum),2n=2x=12=8m+4sm;爪花芥(Oreoioma violaceum),2n=4x=28=28m;棱果糖芥(Erysi mum siliculosum),2n=2x=14=14m;绒毛假蒜芥(Sisymbriopsis mollipila),2n=2x=14=8m+6sm;甘新念珠芥(Neotorularia korolkovi),2n=2x=14=14m;中亚羽裂叶荠(Sophiopsis annua),2n=2x=12=12m;芹叶荠(Smelowskia cal ycina)2n=2x=12=12m.并分析了染色体数目、随体数目和位置、核型公式、核型类型、臂比、相对长度、核型不对称系数等内容,可作为细胞学证据.