Loblolly Pine Provenance Variation in Juvenile Wood Properties Study on Geographical Provenance Variations of Dalbergia obtusifolia Prain Comparative analysis on gas exchange characteristics of four geographical provenances of Nitraria tangutorum Effects of PEG stress on physiological characteristics of Calligonum mongolicum in different geographical provenance Physiological responses to PEG stress of Reaumuria soongorica seedlings from different geographical origins An Analysis on Genetic Variation in Growth Characters of Geographical Provenances of Eucalyptus tereticornis The Analysis on Genetic Distance of 25 Geographical Provenances of Acacia mearnsii A Study on Isoenzymes for Zizyphus mauritiana from 5 Provenances A Preliminary Study on the Geographical Provenance of Zizyphus mauritiana