新麦草属两物种的C-分带研究

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。

A new species in the genus Hedotettix Bolivar(Orthoptera: Tetrigidae), including chromosome karyotype, from the western Yunnan Province in China

A new species, Hedotettix nujiangensis Zheng sp. nov., is described. The chromosome complement of H. nujiangensis consists of 2n （♂） = 13. Sex determination is XO. All chromosomes are telocentric （T） and the sex chromosome is the fourth element in size. Type specimens are deposited at Southwest Forestry University.