The present invention provides a breeding method for tetraploid ricinus communis. The method comprises: collecting a ricinus communis germplasm resource, performing morphologic character analysis and chromosome ploidy identification, selecting good diploid varieties, carrying out mutagenesis by using colchicine and oryzalin; performing chromosome ploidy identification on F1 generation seeds, selecting homozygous tetraploids, and performing economic character analysis and identification on the F2 generation, so as to breed good tetraploid ricinus communis.

The present invention provides a breeding method for tetraploid ricinus communis. The method comprises: collecting a ricinus communis germplasm resource, performing morphologic character analysis and chromosome ploidy identification, selecting good diploid varieties, carrying out mutagenesis by using colchicine and oryzalin; performing chromosome ploidy identification on F1 generation seeds, selecting homozygous tetraploids, and performing economic character analysis and identification on the F2 generation, so as to breed good tetraploid ricinus communis.

A new poinsettia plant particularly distinguished by having red bracts having an upright habit, and having a triangular plant form, is disclosed.

A new poinsettia plant particularly distinguished by having a medium vigor, orbicular leaf shape and an orbicular bract shape, is disclosed.

A new and distinct cultivar of Euphorbia plant named INCHADIACL, characterized by its mounding to semi-trailing plant habit; moderately vigorous growth habit; freely branching habit; freely flowering habit; and inflorescences with multiple white-colored flower bracts.

A new and distinct cultivar of Poinsettia plant named Rineal, characterized by its upright and uniformly mounded plant habit; vigorous growth habit; freely and upright to somewhat outwardly branching habit; dark green-colored leaves; early flowering habit; inflorescences with pale greenish white-colored flower bracts; and good post-production longevity.

A new and distinct cultivar of Poinsettia plant named Rineal, characterized by its upright and uniformly mounded plant habit; vigorous growth habit; freely and upright to somewhat outwardly branching habit; dark green-colored leaves; early flowering habit; inflorescences with pale greenish white-colored flower bracts; and good post-production longevity.

A new and distinct cultivar of Euphorbia plant named Bonpri 14105, characterized by its upright and mounded plant habit; vigorous growth habit; freely branching habit; inflorescences with light pink and light yellow green-colored flower bracts; relatively small cyathia; and good post-production longevity.

The disclosure relates to a method for the generation of plants, such as Euphorbia pulcherrima, having a dysfunctional glutathione S-transferase (GST), and the seeds, plant parts or plant cells derived therefrom. The disclosure further relates to a molecular marker capable of identifying a dysfunctional GST gene, to isolated DNA encoding such a dysfunctional GST gene and to the use of such DNA for the preparation of a molecular marker and for use in methods of targeted mutagenesis to inactivate the GST gene to generate plants with a white foliage phenotype.

A new and distinct cultivar of Poinsettia plant named Rineab, characterized by its upright and uniformly mounded plant habit; moderately vigorous growth habit; freely and upright to somewhat outwardly branching habit with thick and sturdy lateral branches; dark green-colored leaves that are oak leaf-shaped; early flowering habit; inflorescences with vivid red-colored flower bracts that are oak leaf-shaped; and good post-production longevity.