A new and distinct cultivar of Poinsettia plant named Dueposouthbel, characterized by its upright to somewhat outwardly spreading and uniformly mounding plant habit; moderately vigorous growth habit; moderately strong lateral branches; relatively early flowering habit; inflorescences with large bright red-colored flower bracts; and excellent post-production longevity.

A new and distinct cultivar of Poinsettia plant named QS-86, characterized by its compact, upright and uniformly mounding plant habit; moderately vigorous growth habit; freely branching habit; dark green-colored leaves; early response time; large and full inflorescences with numerous creamy white-colored flower bracts; and excellent post-production longevity.

A new and distinct cultivar of Poinsettia plant named Duepojadohopi, characterized by its upright to somewhat outwardly spreading and uniformly mounding plant habit; moderately vigorous growth habit; moderately strong lateral branches; relatively early flowering habit; inflorescences with dark pink-colored flower bracts; and excellent post-production longevity.

A new and distinct cultivar of Poinsettia plant named Duepojadopin, characterized by its upright to somewhat outwardly spreading and uniformly mounding plant habit; moderately vigorous growth habit; moderately strong lateral branches; relatively early flowering habit; inflorescences with pink-colored flower bracts; and excellent post-production longevity.

A new Poinsettia plant named EURZ0012 particularly distinguished by dark red bract color, medium-large sized inflorescences with bracts a little upright directed, dark green foliage, compact-medium vigor with a tight plant habit and strong relatively vertically oriented branches.

A new Poinsettia plant named EURZ0009 particularly distinguished by an intense dark red bract color, medium-large sized inflorescences with a large set of pronounced cyathia, compact vigor and a tight plant habit.

A new and distinct cultivar of Euphorbia milii plant named 12-01-ZEU, particularly characterized by its medium plant height about 20-22 cm, and its width about 16-18 cm; upright to spreading, compact growth habit; grouped disposition of spines; leaves of medium length about 5-6 cm, and a width about 1.5-2 cm; with the color of the upper side being RHS Yellow-Green 147A (but darker), and the underside being RHS Grayed-Purple 177A; and upper side color of its colorful bracts being RHS Red 45D.

A new and distinct cultivar of Euphorbia plant named Bonpri 1495, characterized by its upright and mounded plant habit; vigorous growth habit; freely branching habit; large inflorescences with bright salmon pink-colored flower bracts; and good post-production longevity.

A new and distinct cultivar of Euphorbia plant named Bonpri 1482, characterized by its upright and mounded plant habit; vigorous growth habit; freely branching habit; large inflorescences with bright purplish red-colored flower bracts that resist fading; and good post-production longevity.

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.