摘要
研究了黑芥（Ｂｒａｓｓｉｃａｎｉｇｒａ）的核型和染色体的ＧｉｅｍｓａＣ带带型，黑芥有８对染色体，４对是中部着丝粒染色体；其中４对是亚中部着丝粒染色体，在４对亚中部着丝粒染色体中有２对具随体。黑芥的核型公式为２ｎ＝２ｘ＝１６＝８ｍ＋４ｓｍ＋４ｓｍ（ＳＡＴ）．用ＨＳＧ法得到ＧｉｅｍｓａＣ带带型，黑芥的Ｃ带带型为ＣＩＴ型，黑芥的染色体具有着丝粒带、中间带、端带和全带。黑芥的ＧｉｅｍｓａＣ带带型公式为２ｎ＝２ｘ＝１６＝ＣＩＴ型＝２Ｃ＋２ＣＩ＋２ＣＩ＿＋＋８ＣＴ（ｌＣＴ￣＋）＋２ＣＩ＿＋Ｔ￣＋。
This peper focuses on the Study of the karyotgus and Giemsa C- banding petterns ofBrassica nigra,In the root-tip cells of Brassica nigra exist 8 peirs of chromosemes among which 4 airmetacentric and 4 air submetacentric, Among the latter 4 pairs,2 are satttellites,The karyotypeformula of B. nigra is 2n= 2x=16 = 8m+48m+4sm(SAT).The Giemsa C-banding pattem of B.nigra is CIT pottern. The C-banding pattern was obtained by war of HSG C-banding.Within giemsac-bamding pattern of B. nigra there are centromeric bands,intercalary bands telomeric bands andwhole bands. The giemsa C-banding formula is 2n= 2x=16=CIT pattern =2C+2CI+2CI_++8CT(ICT￣+)+2CI+_T+.
出处
《四川大学学报（自然科学版）》
CAS
CSCD
1995年第1期89-94,共6页
Journal of Sichuan University(Natural Science Edition)
基金
国家"七五"自然科学基金
关键词
核型
黑芥
染色体
十字花科
karyotype,brassica nigra,giemsa C-banding
