Crossability Barriers in the Interspecific Hybridization between Oryza sativa and O. meyeriana CROSSABILITY OF WHEAT WITH RYE AND CHARACTERISTICS OF MALE GAMETES DEVELOPING OF A WHEAT/RYE HYBRID A Study on the Crossability of Species between Group A and B in the Section Batatas of Genus Iponoea CROSSABILITY BETWEEN WHEAT AND RYE DURING THE ARTIFICIAL EVOLUTION OF WHEAT CULTIVARS 小麦选系“7182—0—11—1”与黑麦可杂交性的遗传分析 The Crossability of Triticum aestivum with Tetraploid Hordeum bulbosum RESTUDY OF THE CHROMOSOMAL LOCATIONS OF CROSSABILITY GENES WITH RYE (SECALE CEREAL) IN CHINESE SPRING (T.AESTIVUM) AND RELATIONSHIP BETWEEN THEM ANE GENE TA1 Studies on the Relationships Between Moricandia and Brassica Species