Double-flowered Pentas plant and method for growing same

Patent metadata

Field	Value
Publication number	US-11464196-B2
Application number	US-201816956862-A
Country	US
Kind code	B2
Filing date	May 17, 2018
Priority date	May 17, 2018
Publication date	Oct 11, 2022
Grant date	Oct 11, 2022

Abstract

A Pentas plant having a monogenic, incompletely dominant doubled-flower gene, a method for breeding the same, and a method for providing a Pentas variety with a doubled-flower or semi-double flower phenotype are provided for the purpose of creating a doubled-flower or semi-double flower Pentas plant with voluminous florets and a high ornamental value.

First claim

The invention claimed is:

1. A Pentas plant comprising a monogenic incompletely dominant double flower gene that depending upon the zygosity of the double flower gene exhibits a semi-double or double flower phenotype, wherein the double flower gene provides 3 or more whirls of petals, and wherein the double flower gene is as found in variety SSC-PEN-18-001, a representative sample of seed comprising said double flower gene containing variety having been deposited under the accession number FERM BP-22361.

2. The Pentas plant according to claim 1 , wherein the Pentas plant is homozygous for the double flower gene.

3. The Pentas plant according to claim 2 , wherein the Pentas plant exhibits a double flower phenotype.

4. The Pentas plant according to claim 1 , wherein the Pentas plant is heterozygous for the double flower gene.

5. The Pentas plant according to claim 4 , wherein the Pentas plant exhibits a semi-double flower phenotype.

6. The Pentas plant according to claim 1 , wherein the Pentas plant is a seedling.

7. The Pentas plant according to claim 1 , wherein the Pentas plant is a clone.

8. A plant body or a part of the plant body of the Pentas plant according to claim 1 .

9. The plant body or the part of the plant body of the Pentas plant according to claim 8 , wherein the part of the plant body of the Pentas plant is a leaf, pollen, an embryo, a seed leaf, an embryonic axis, a meristematic cell, an ovule, a seed, a cell, a root, a root apex, a pistil, a stamen anther, a flower, or a stem, and has the double flower gene.

10. A method for breeding a Pentas plant having a double flower gene, comprising the following steps (1) and (2):
(1) artificially crossing the Pentas plant according to claim 1 with a second Pentas plant; and
(2) selecting a progeny Pentas plant having a double flower gene from Pentas plants obtained by artificial crossing of step (1).

11. A method for providing a Pentas variety with a double flower or semi-double flower phenotype, comprising the following steps (1) to (4):
(1) artificially crossing the Pentas plant according to claim 1 with a second Pentas variety;
(2) selecting a progeny Pentas plant having a double flower or semi-double flower phenotype from Pentas plants obtained by artificial crossing of step (1);
(3) artificially back-crossing the progeny Pentas plant obtained by selection of step (2) with the second Pentas variety used in step (1);
(4) selecting a second progeny Pentas plant having a double flower or semi-double flower phenotype from Pentas plants obtained by artificial crossing of step (3), wherein steps (3) and (4) are conducted several times, and, optionally
(3′) artificially back-crossing the second progeny plant Pentas plant of step (4) with the second Pentas variety used in step (1) and
(4′) selecting a third progeny Pentas plant having a double flower or semi-double flower phenotype from Pentas plants obtained by artificial crossing of step (3′), wherein steps (3′) and (4′) are conducted several times.

Assignees

• Sakata Seed Corp

Inventors

• Nakagawa Masahiro
• Torii Akihiro

Classifications

• A01H6/76 Primary

  Rubiaceae, e.g. Pentas · CPC title

• A01H3/00

  Processes for modifying phenotypes {, e.g. symbiosis with bacteria} (A01H4/00 takes precedence) · CPC title

• A01H1/1215

  Flower development or morphology, e.g. flowering promoting factor [FPF] · CPC title

• A01H5/02 Primary

  Flowers · CPC title