草业学报2025，Vol.34Issue(2)：123-132,10.DOI:10.11686/cyxb2024118
青藏高原区8份老芒麦资源农艺性状与生产性能综合评价
Comprehensive evaluation of agronomic traits and yield of eight Elymus sibiricus varieties in the Qinghai-Tibet Plateau
摘要
Abstract
The aim of this research was to comprehensively evaluate the performance of Elymus sibiricus varieties in the Qinghai-Tibet Plateau.The work was conducted in Haiyan County of Qinghai Province,and analyzed the agronomic traits and forage yield characteristics of eight E.sibiricus varieties,using a TOPSIS model to identify superior varieties.In year two,varieties designated 16-364 and 17-195 had greater plant height than other varieties(108.1 and 109.0 cm,respectively),while variety 16-093 had the highest grass height among the tested varieties(36.8 cm)and the greatest forage yield per plant(dry weight)(170.3 g).Varieties 15-025 and 17-195 had the highest tiller numbers(123 and 124 tillers of per plant,respectively).In year 3,variety 17-195 had the greatest plant height and crown breadth(122.7 cm and 140.8 cm,respectively),while variety 16-093 had the greatest grass height and forage yield per plant(51.8 cm and 234.7 g,respectively).Variety 15-025 had the highest tiller numbers(456 tillers per plant).A structural equation model showed that plant height and tiller numbers were key factors affecting E.sibiricus forage yield.The TOPSIS model multivariate evaluation showed that the variety 16-093 ranked highest for forage productivity and stability,making it a suitable variety for cultivation in the study region.Therefore,variety 16-093 could be used as parent material for new variety breeding as a next step.关键词
老芒麦/生产性能/资源/饲草/综合评价Key words
Elymus sibiricus/production performance/varieties/forage/comprehensive evaluation引用本文复制引用
王文虎,梁国玲,刘文辉,王凤宇,李文..青藏高原区8份老芒麦资源农艺性状与生产性能综合评价[J].草业学报,2025,34(2):123-132,10.基金项目
披碱草属重要牧草适应高寒环境的分子生态学机制U20A2050和青藏高原种质资源研究与利用实验室(2024)资助. （2024）
