Fruit Tree Research Station, Ministry of Agriculture, Forestry and

Osamu Kishimoto

Mitsuo Omura

Yutaka Machida

Yoshihiko Sato

Teruo Kozono

Isao Shimura

Ichiro Kajiura

Kitsuo Kanato

Kanetsugu Seike

Akio Kurihara

Kazuyuki Abe

Kazuo Kotobuki

Tsutomu Chiba

Itaru Kozaki

Kazuo Kotobuji

Disclosed herein is a Japanese pear tree having a moderate vigor and an easily maintained moderate spur development, a high resistance to black spot disease and a high productivity. This tree produces an oblate-shaped fruit which matures early in the season, i.e., from the start to the middle of August, in the central part of the Kanto district, Japan. The fruit has a medium size and the same weight as `Kosui`, i.e., 250 to 300 g, a yellowish brown skin, and a white flesh which is soft, crisp and very juicy with a high Brix the pH of the juice being about 5.2, a particular smell without aromatic flavor, giving an excellent dessert quality.

Japanese pear tree 'Chikusui'

Disclosed herein is a Japanese pear tree which has a moderate vigor and an easily maintained moderate spur development, is resistant to black spot disease, and as productive as `Hosui`. The tree is cross-incompatible with `Kosui` and is assumed to have an S.sub.4 S.sub.5 genotype, and has brown young leaves and white large flowers which have a pale red color at the pit at fat bud and bloom middle to late in the season and at almost the same time as `Nijisseiki`. The tree can produce an oblate-shaped fruit which matures early in the season, earlier than `Nijisseiki`, and has a normal keeping quality. The fruit has a large size which is larger than that of `Nijisseiki`, a skin which is covered partly with russet when cultivated without bagging, is at early maturity of the yellowish green color identified in the Munsel.RTM. Book of Color as follows:

Japanese pear tree

Growing community of inventors

Sakado, Japan

Osamu Kishimoto