Breeding of eustoma varieties "Tresor Red" and "Tresor Purple"
2000
Ujihara, K. (Gifu-ken. Research Inst. for Agricultural Sciences (Japan)) | Kato, K. | Saeda, T.
The new hybrid varieties of Eustoma, "TG3" and "TG26" was bred by the crossing in order to developed the GIFU original variety. TG3 was produced by the cross of T3 strain (as female) and G20 strain (as male). TG20 was also produced by the cross of T3 strain (as female) and G26 strain (as male). T3 is small size and red bicolor flower and spray figure. G20 is middle size and red bicolor flower. G26 is middle size and purple bicolor flower. Both TG3 and TG26 had the superior feature than parents; bright and clear flower-color, longer flower stem, and flowering uniformity. Hence, we named TG3 to "Tresoa Red" and TG26 to "Tresoa Purple" in 1999. We also applied to the plant variety registration then. The feature of "Tresoa Red" is as follows; dark red color (JHS color chart No. 0108) flower, bicolor flower, middle size flower, spray figure from upper middle (many flower stem number makes large volume) , middle flowering time. The feature of "Tresoa Purple" is as follows; dark purple color (JHS color chart No.' 8608) flower, bicolor flower, middle size flower, spray figure from upper middle, late flowering time. As both varieties are so-called "F1 Hybrid variety", the plant grows vigorously and the flower color uniformity is quite good.
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