Investigation on 6 Populus Species Germplasm Resources in the Eastern Qinghai Province and Collection of PlusTrees

Investigations were implemented during May and October of 2015 ongermplasm resources of Populuscathayana, P. simonii, P.purdomiiP.alba var. pyramidalis, P. hopeiensis andP.tomentosa in the eastern Qinghai province. The result demonstrated that P. cathayanahad the largest distribution area and quantity, followed by P. simonii,P.purdomii, while P.tomentosa the smallest. Based on the investigation, 549 plus trees were collected and conserved, and 1.8 haof germplasm base was established.