大头稗(005)与鹅头稗(031)的生物学性状与细胞学研究

通过对大头稗(005)与鹅头稗(031)的生物学性状测试和细胞学研究,以期为寒地稗草资源的进一步研究和利用提供依据,这2种稗草均收集于黑龙江省内的不同地方。2007年对2种稗草进行了观察和试验,测定了生育期、株高、分蘖数、叶面积及鲜、干重量等主要生物学性状,并对小区的实际产量进行了测试。结果表明,2种稗草生物学性状均为良好,在黑龙江省的气候条件下,大头稗与鹅头稗的鲜干草产量无明显差别。核型分析结果显示,2种稗草的核内染色体数目均为2n=54。大头稗2n=46m+8sm, 鹅头稗2n=44m+10sm。

Studies of biological traits and karyotype of two barnyard grass variety

In order to provide a theoretical basis for further study and utilization of barnyard grass resources,the agronomic traits and karyotype of Large head barnyard grass(005) and goose head barnyard grass(031)were studied in 2007.The two barnyard grass(Echinochloa crusgalli) variety were collected from different locations of Heilongjiang province.During the growth period,plant height,tiller number,leaf area,fresh weight,dry yield,and other major agronomic traits were determined and the actual production of the plot was tested.That the agronomic trait of two barnyard grass variety were good and fresh forage and hay yield have no significant differences under the current climatic condition in Heilongjiang province.Karyotape analysis indicates that the nucleus chromosome number of two barnyard grass variety are 2n=54.Large head barnyard grass is 2n=46m+8sm,Goose head barnyard grass is 2n=44m+10sm.