Characteristics of Photosynthesis in Seed Plants of Satellite Chromosome Monosome, Diploid and Trisome of Chinese Cabbage Characteristics of Photosynthesis in Seed Plants of Satellite Chromosome Monosome, Diploid and Trisome of Chinese Cabbage Identification and related gene locating of tolerance to low phosphorus stress in wheat-relatives Studies on the cultivation and morphological and cytological identification of wheat-Elytrigia intermedium alien disomic addition lines