In this research study,we determined nine phenotypic traits,dry matter yield,canopy height,panicle height,stem diameter,shoot density,leaf length,leaf width,leaf stem ratio,and moisture content,of 32 samples collected from the following subregions,Huanghuai plain(Ⅲ D9a),Jianghan plain(Ⅲ D9b),South Jiangxi-Eastern Hunan hilly(Ⅲ D9d),Sichuan,Hubei,and Hunan subregion(Ⅲ D10c).The above traits were determined usingnested,partial correlation,and unweighted pair group method with arithmetic mean (UPGMA) cluster analyses.The study revealed the fol...