Method for controlling sexuality of hop

Patent metadata

Field	Value
Publication number	US-9737077-B2
Application number	US-201214239718-A
Country	US
Kind code	B2
Filing date	Aug 10, 2012
Priority date	Aug 19, 2011
Publication date	Aug 22, 2017
Grant date	Aug 22, 2017

Abstract

This invention relates to: a method for controlling the sexuality of hop, comprising applying a chemical to a hop female plant once or more and forming a fertile male flower capable of forming pollen on the female plant, wherein the chemical reduces a reaction with endogenous ethylene in the female plant; an embryo or seed, hop plant, and cone, capable of being obtained through the method; a method of screening for a hop plant; and a method of producing a hop plant variety.

First claim

The invention claimed is:

1. A method of producing a hop plant variety comprising the following steps of:
1) forming a fertile male flower capable of producing pollen on a hop female plant;
2) crossbreeding with the male flower and a female flower; and
3) screening for a progeny produced by the crossbreeding,
wherein step 1) comprises applying a chemical to a hop female plant once or more, to thereby form a fertile male flower capable of producing pollen on the female plant,
and wherein said chemical is an ethylene biosynthesis inhibitor, an ethylene action inhibitor, or a combination thereof.

2. The method of claim 1 , wherein the ethylene biosynthesis inhibitor is selected from the group consisting of aminooxyacetic acid, 2-aminoisobutylic acid, amino ethoxy vinyl glycine (AVG), cobalt chloride, and rhizobitoxine.

3. The method of claim 1 , wherein the ethylene action inhibitor is selected from the group consisting of silver thiosulfate complex (STS), 1-methylcyclopropene, and silver nitrate.

4. The method of claim 1 , comprising applying the chemical to a hop female plant before flower bud differentiation.

5. The method of claim 1 , wherein the chemical application is a foliar application or foliar spray.

Assignees

• Momma Takayuki
• Umemoto Naoyuki
• Kirin Holdings Kk

Inventors

• Momma Takayuki
• Umemoto Naoyuki

Classifications

• C12Q2600/156

  Polymorphic or mutational markers · CPC title

• A01N37/44

  containing at least one carboxylic group or a thio analogue, or a derivative thereof, and a nitrogen atom attached to the same carbon skeleton by a single or double bond, this nitrogen atom not being a member of a derivative or of a thio analogue of a carboxylic group, e.g. amino-carboxylic acids · CPC title

• A01N27/00

  Biocides, pest repellants or attractants, or plant growth regulators containing hydrocarbons · CPC title

• A01N37/36

  containing at least one carboxylic group or a thio analogue, or a derivative thereof, and a singly bound oxygen or sulfur atom attached to the same carbon skeleton, this oxygen or sulfur atom not being a member of a carboxylic group or of a thio analogue, or of a derivative thereof, e.g. hydroxy-carboxylic acids · CPC title

• C12Q1/6895

  for plants, fungi or algae · CPC title