Identification and Genetic Diversity Analysis of Hybridprogeny of Ziziphus jujuba Mill.cv.Dongzao and Ziziphus jujuba Mill.cv.Ninglijuzao by SRAP Molecular Markers Progress in Chromosome Research in Lily Cross-breeding Hybrid identification of progenies of Zoysia crosses by SRAP marker Progress in Chromosome Research in Lily Cross-breeding A New Flammulina velutipes Hybrid‘Jinzhengu G1’ New Varieties of Weigela A New Flammulina velutipes Hybrid‘Jinzhengu G1’ A STUDY ON THE CROSS-BREEDING BETWEEN OCTOPLOID TRITIELYTRIGIA TYPES AND TRITICUM AESTIVUM Breeding of the new wheat variety,Zaoyou 504,suitable for interplant and multiple cropping