Abstract: Five types of two-year-old apple rootstock-scion combinations[scion：Malus × domestica
Borkh.‘Red Fuji’；rootsocks：M. hupehensis（Pamp.）Rehd. var. pinyiensis，M. micromalus Makino，
M. prunifolia（Willd）Borkh.，M. sievesii（Ledeb.）Roemer，M. baccata Borkh.，recpectively]were used
to study the growth and the characteristics of distribution and utilization of ¹⁵N and ¹³C. The results were as
follows：The biomass of‘Red Fuji’/ M. hupehensis Rehd. was the largest，while that of M. domestica
Borkh.‘Red Fuji’/ M. baccata Borkh. was the least. The ¹⁵N utilization ratio of ‘Red Fuji’/ M.
hupehensis Rehd. was the largest，while‘Red Fuji’/ M. prunifolia（Willd）Borkh. was the least. The ¹⁵N
and ¹³C distribution ratio of leaves was the highest，while annual stems was less than leaves，and the
biennial stems was the least. The ¹⁵N and ¹³C distribution ratio in leaves of ‘Red Fuji’/ M. baccata Borkh.
were the largest，while those in the roots of ‘Red Fuji’/ M. hupehensis Rehd. were the largest. Therefore，
‘Red Fuji’/ M. hupehensis Rehd. was the best considering with carbon and nitrogen nutrition.

Key words: apple, rootstock, ¹³C, ¹⁵N, distribution, utilization