Abstract
Dutch variety DUNDEE, that produced more fruits per plant than Japanese variety Momotaro York, developed unusually massive adventitious roots from the stem of tomato, whereas Japanese variety developed lateral shoots instead of the adventitious roots. Both varieties increased starch content in the stem by fruit thinning. In this case, there were varietal differences only Japanese variety increased starch contents in 50 of fruits removal. These results suggested that translocation of assimilates to the fruits on Dutch tomato variety was more efficient than Japanese variety, however it was assumed that not only starch accumulation in the stem effected development of adventitious roots from the stem.