Genotype Identification of Restorer of Double Dominant Genic Sterility 896AB in B.campestris L. Changes of Free Amino Acids in Developing Buds of a Dominant Male Sterile Line in Sesame Genetic Verification of Multiple Allelic Gene for Dominant Genic Male Sterility in 609AB (Brassica napus L.) Identification of AFLP Markers Linked to the Dominant Genic Male Sterility Gene in Brassica napus L. Study on the main Agronomic Characters in two types of Male Sterile Lines of Broccoli (Brassica oleracea var. italica) EST-Aided Conversion of AFLP Marker Linked to Dominant Male Sterility Gene in Brassica napus into SCAR