新麦草属两物种的C-分带研究  

C banding of two Psathyrostachys species

作　　者：王秀娥[1] 李万隆[1] 刘大钧[1] 

机构地区：[1]南京农业大学农业部细胞遗传重点开放实验室

出　　处：《南京农业大学学报》1998年第1期10-13,共4页Journal of Nanjing Agricultural University

基　　金：高等学校博士学科点专项科研基金

摘　　要：对新麦草属（Ｐｓａｔｈｙｒｏｓｔａｃｈｙｓ）两物种新麦草（Ｐｓａｔｈｙｒｏｓｔａｃｈｙｓｊｕｎｃｅａ）和华山新麦草（Ｐｓａｔｈｙｒｏｓｔａｃｈｙｓｈｕａｓｈａｎｉｃａ）进行根尖染色体Ｃ－分带，获得清晰的Ｃ－分带带型，并对二者带型进行了描述。结果表明，二者Ｃ－分带带型有较大差异。Ｐ．ｊｕｎｃｅａ的Ｃ－分带带纹较Ｐ．ｈｕａｓｈａｎｉｃａ丰富，Ｐ．ｈｕａｓｈａｎｉｃａ所有染色体均显较强端带。通过二者带型比较，对华山新麦草是否仍应保留在新麦草属提出质疑，并提出了将新麦草和华山新麦草的基因组分别标为Ｎｊ和Ｎｈ以示区别的建议。Chromosome C banding was conducted in Psathyrostachys juncea and P. huashanica simultaneously. The results showed that C band patterns of the two species were quite different. C band of P. juncea was more abundant than that of P. huashanica . However, all chromosomes of P. huashanica showed one or two dark telomeric bands. Therefore, it is suggested that the genome symbols of the two species be designated as N j and N h respectively.

关 键 词：新麦草 C=分带 基因组 带型分析 小麦 

分 类 号：S512.102.3[农业科学—作物学]