Elephant grass （Pennisetum purpureum） and hybrid Pennisetum are high-quality forage grasses with remarkable biomass potential. However， evaluation of their adaptability and agronomic performance in Northern China remains insufficient. This study aims to systematically evaluate the agronomic traits of 80 Pennisetum accessions in Beijing and screen the excellent germplasm suitable for northern cultivation. Seven key agronomic traits， including plant height， leaf length， leaf width， tiller number， stem diameter， fresh weight， and dry weight were measured for the 80 accessions. Then coefficient of variation （CV） analysis， correlation analysis， principal component analysis （PCA）， and subordinate function analysis were employed for comprehensive evaluation. The results showed that the 80 accessions exhibited rich genetic diversity. The CVs of the seven traits ranged from 10.97% to 78.77%， with dry weight （78.77%） and fresh weight （69.85%） exhibiting the highest variation， this indicates that there are significant differences in biomass-related traits among different genotypes. By correlation analysis， individual that leaf length and leaf width， as well as fresh weight and dry weight， were both highly significantly positively correlated （P < 0.01）. Principal component analysis （PCA） revealed that four principal components accounted for a cumulative contribution rate of 89.70%， primarily representing biomass factors， plant architecture factors， and tillering factors. Based on the membership function values， the top 10 accessions with superior comprehensive performance were identified. P.americanum×P. purpureum ‘Sumu No.4’，P. purpureum ‘Chuanyu No.1’ ， P. purpureum ‘Zise’ ， P. purpureum ‘Huanan’， P.americanum×P. purpureum ‘No.11’， P. purpureum ‘No.31’，P. purpureum ‘Guiminyin’ ， P.americanum×P. purpureum ‘CHP31’，P. purpureum ‘No.10’ and P. purpureum ‘Dehong’. This study provides high-yielding Pennisetum germplasm for forage cultivation and breeding in Northern China.

Elephant grass  /  Hybrid Pennisetum  /  Agronomic traits  /  Comprehensive evaluation  /  Germplasm screening