Nippon Zeon Company, Ltd.

Tama Biochemical Co., Ltd.

Sagami Chemical Research Center

Bal Planning Co., Ltd.

Yasuo Kamuro

Hiroki Kuriyama

Tsuyoshi Watanabe

Hiroshi Fujisawa

Suguru Takatsuto

Kunikazu Sakai

Shinichi Hirakawa

Shin-ichi Hirakawa

Nada Morishige

The present invention provides plant growth promoters each comprising, as an active ingredient, a jasmonic acid derivative represented by the following formula:

Plant growth promoter

Growth regulator for crop plants and method for regulating the growth of

Plant growth accelerator

The present invention provides plant growth promoters each comprising, as an active ingredient, a jasmonic acid derivative represented by the following formula: ##STR1## wherein R.sup.1 represents a pentyl group or a pentenyl group and R.sup.2 represents a hydrogen atom or an alkyl group. These promoters exhibit excellent growth promotion effects particularly on root vegetables, potatoes (tuber crops), cereals, fruit vegetables, fruit trees, flowers and ornamental plants and industrial crops.

The present invention relates to a plant growth regulator comprising as an active ingredient an epoxycyclohexane derivative represented by general formula (1): ##STR1## wherein R.sup.1 is a hydrogen atom, a C.sub.1 -C.sub.6 alkyl group or C.sub.3 -C.sub.6 cycloalkyl group, and R.sup.2 and R.sup.3 are independently C.sub.1 -C.sub.6 alkyl groups or are combined to form a C.sub.2 -C.sub.3 polymethylene group which may be substituted with a C.sub.1 -C.sub.6 alkyl group, as well as to a plant growth regulator comprising the epoxycyclohexane derivative and a brassinosteroid as active ingredients. The epoxycyclohexane derivatives exhibit a potent plant growth regulating action which is equivalent to or higher than that of abscisic acid, and are useful as plant growth regulators such as a plant growth accelerator, a germination growth accelerator, a transpiration and wilting inhibitor, a cold resistance enhancer, an accelerator for growing, thickening or maturing fruits, roots, stems or bulbs, etc. A synergistic effect is achieved by combination of the epoxycyclohexane derivative with a brassinosteroid.

Plant growth regulating composition comprising epoxycyclohexane

Plant growth promoter comprising jasmonate and brassinolide

Epoxycyclohexane derivative and plant growth regulator

Brassinosteroid derivative and plant growth regulator using the same

Growing community of inventors

Ichinomiya, Japan

Yasuo Kamuro