REPORTS ON THE CHROMOSOME NUMBERS OF MALUS IN CHINA
中国苹果属植物染色体数目报告

This paper reports on the chromosome numbers of 17 species of Malus in China, including 22 materials. The results show that polyploid is 44.6% in all materials. Some of them differ with source of materials on ploidy. This result may be applied to hereditary breeding of fruit trees in China.