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本研究表明蔗茅（Ｅｒｉａｎｔｈｕｓｒｕｆｉｐｉｌｕｓ）在我国分布于滇、黔、川、藏、桂、陕、甘、鄂８省（区）海拔４８０－２８００米的区域。其体细胞染色体数目为２Ｎ＝２０，不同区域的无性系２Ｎ数目未发现变异，但减数分裂染色体配对构型略有差异．蔗茅茎秆的锤度普遍较高，最高可达２２％，但种群内变异较大，即使同一野生群落内也有明显差异。蔗茅同一个体不同小穗内的花药数目变异较大，总体变化在０—３枚之间。蔗茅的高锤度、花药数目的易变性及染色体数目的稳定性表明：蔗茅在甘蔗起源和进化上具有一定的重要性，在甘蔗育种的基础研究上应给予重视。，达极显著水平。表２列出了１４个蔗茅无性系的花药数目的小穗百分率。总体而言，可按百分率把蔗茅的花药数目变异为４类：（１）以３花药小穗为主，同时出现２花药和单花药的小穗，西藏、四川和陕西都有这类无性系出现，共有６个无性系。（２）以单花药小穗为主，同时出现３花药、２花药和无花药小穗，共有５个无性系，原产于云南和西藏。（３）以２花药小穗为主，同时出现３花药和单花药小穗；共２有个无性系，原产于四川和云南。（４）３花药、２花药、单花药小穗百分率基本相等，只见于陕西的一个无性系中。从地理上看，云南和西藏的?
This study shows that Erianthus rufipilus is distributed in the areas of 480-2800 meters above sea level in Yunnan, Guizhou, Sichuan, Tibet, Guangxi, Shaanxi, Gansu and Hubei provinces. The chromosome number of somatic cells was 2N = 20. No variation was found in the number of 2N clones in different regions, but the meiotic chromosome pairing configuration was slightly different. The cane straw stems generally have high billet weights, up to 22%, but large variability within the population, even with significant differences within the same wild community. The number of anther in different spikelets of the same individual in Cimicifuga genus varied greatly, the overall change was between 0-3 pieces. The high degree of brix, the variability of the number of anther and the stability of the number of chromosomes indicated that Cimicifuga was of some importance in the origin and evolution of sugarcane, and should be paid more attention in the basic research of sugarcane breeding. , Reaching a significant level. Table 2 lists the percentage of spikelets in anther population for 14 Cimicifuga clones. In general, the number of anther in Cimicifuga can be mutated to 4 categories by percentage: (1) spikelets of 3 anther spikes and 2 spikelets of anther and single anther at the same time. These asexuals are found in Tibet, Sichuan and Shaanxi Department appeared, a total of six clones. (2) Single anther spikelet, 3 anther, 2 anther and anther spikelet appeared at the same time. There were 5 clones, originating in Yunnan and Tibet. (3) There are 2 anther spikelets and 3 anther and single anther spikelets. There are 2 clones in total, which are native to Sichuan and Yunnan. (4) 3 anther, 2 anther, single anther spikelet percentage are basically the same, only found in a clonal Shaanxi. Geographically, Yunnan and Tibet?