Genetic Contribution of Wheat Variey Ningmai 9 to Its  Derivates The Course ot Watermelon Breeding and Germplasm Bases of Watermelon Cultivars in USA Ancestors Tracking and Analysis on Genetic Basis of Super Rice Longjing31 in Cold Region Identifying populations for priority conservation II. Models based on haplotype richness and their applications in Ginkgo biloba Marker-Based Evidence of Broadening the Genetic Base of Chinese Soybeans by Using Introduced Soybeans The Course ot Watermelon Breeding and Germplasm Bases of Watermelon Cultivars in USA Ancestors Tracking and Genetic Dissection for Released Soybean Cultivar ‘Mudou8’ enetic Contribution of Lumai 14 to Novel Wheat Varieties Developed in Shandong Province