Estimation on Genetic Gains of Combined Selection for Growth Traits of Half-Sib Progeny of Pinus taeda The state of Utilization and Sustainable Management of Forest Genetic Resources Estimation of Parents Genetic Gain by Open-pollinated Progeny Test of Seedling Seed Orchard of Masson Pine The Construction, Management and Improving Effect of Chinese Fir Seed Orchard in Changle, Zhejiang Province Study on the Regional Test of Excellent Family of Chinese Fir A REPORT ON THE PROVENANCE TEST OF ACACIA MANGIUM Female Selection Based on a Polycross Progeny Test of Cunninghamia lanceolata Plus Trees Comparative Study on Genetic Gains of Chinese Fir Improved Varieties Research on Open-pollination Progeny Test in Loblolly Pine(Pinus taeda) Study on Filial Generation of Single Parent in Second-generation Seed Orchards of Chinese Fir Studies on Index Selections of Eucalyptus urophylla Families A COMPARISON STUDY BETWEEN OPEN POLLINATION SEED PROGENY TEST AND CLONAL TEST OF ROBINIA PSEUDOACACIA A STUDY ON THE OPEN POLLINATION SEEDS PROGENY TEST OF THE ORIGINAL HIGH-QUALITY STANDS OF PINUS YUNNANENSIS Effects of Phenotypic Recurrent Selection and Mass Selection on Improvement of Agronomic Traits in Wheat Populations Progeny Test for the Open-pollinated Families of Loblolly Pine with Multiple Site Progeny Test for the Open-pollinated Families of Eucalyptus urophylla in Multiple Sites A Study on Realized and Genetic Gains of Different Generations and Types in Seed Orchards of Chinese Fir (Cunninghamia lanceolata) The Regional Selection and Its Effectiveness of Chinese Fir Fine Families in Huangshan Area STUDY ON EARLY SELECTION IN PINUS TABULAEFORMIS CARR Genetic Gain of Soybean Breeding for Yield in Henan Summer Soybean Zone Overthe Last 30 Years Certification of Actual Genetic Gains from Good Planting Materials in Pinus massoniana