%0 Journal Article
%T Analysis of the chromosomes of S. bicolor × S. propinquum and S. dochna × S. propinquum by FISH<br>FISH分析栽培高粱×拟高粱、甜高粱×拟高粱的染色体行为
%A XIE Li
%A HAN Yong-Hua
%A LI Dong-Yu
%A ZENG Yan-Hua
%A <br>谢莉
%A 韩永华
%A 李冬郁
%A 曾艳华
%J 遗传
%D 2009
%I 
%X By means of fluorescence in situ hybridization (FISH), we located and analyzed the sites of the 45S rDNA on the F1 hybrids of S. bicolor × S. propinquum and S. dochna×S.propinquum. Two signals of 45S rDNA were mapped on the mitotic metaphase chromosomes in the F1 hybrids, respectively, and one signal was present on a bivalent during meiotic of synaptene, diakinesis, and metaphase I. We inferred that the two mitotic chromosomes carrying 45S rDNA were homolo-gous pairs. Considering the signals of 45S rDNA location during meiotic process, chromosome pairing of these two F1 hy-brids was normal with an average pairing configuration of 2n=2x=20 (10 II). Our results indicated that 45S rDNA could provide a landmark for identification of individual chromosome during meiosis indirectly.
%K 45S rDNA<br>栽培高梁
%K 甜高梁
%K 拟高梁
%K 荧光原位杂交
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=3E23F50E071DF18E21B2F5AEE4F1FA5E&aid=D89E8EA37FD43AE8AB144F2A0CD7D322&yid=DE12191FBD62783C&vid=4AD960B5AD2D111A&iid=E158A972A605785F&sid=5335AD3CFE6E14EA&eid=F10601728A1E9BEA&journal_id=0253-9772&journal_name=遗传&referenced_num=0&reference_num=16