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The objective of the Cuphea breeding program is to
integrate traits from wild Cuphea accessions into the advanced line,
PSR-23. Research will focus on producing an annual, self-pollinating,
non-dormant plant with increased lauric acid, reduced shatter, increased
seed size, and reduced stickiness. These interspecific hybridization
efforts in 2001 and 2002 focused on manual pollination procedures while in
2003 bee pollinators were introduced. The properties of PSR-23 and several Cuphea
wild types are listed below. |
|
|
 |
 |
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|
PSR-23
(C. lanceolata x C.
viscosissima)
 |
Annual |
|
2.0% lauric acid |
|
Self-pollinating |
|
Semi-dormant |
|
1000 seed weight = 3.64 g |
|
Chromosome number = 6 |
|
Cuphea glutinosa
|
Perennial |
|
54.2% lauric acid |
|
Self-pollinating |
|
Non-dormant |
|
1000 seed weight = 0.98 g |
|
Chromosome number = 14 |
|
|
|
|
 |
|
|
Cuphea wrightii
|
Annual |
|
53.9% lauric acid |
|
Self-pollinating |
|
Dormant |
|
1000 seed weight = 1.61 g |
|
Chromosome number = 22 |
|
Cuphea tolucana
|
Annual |
|
60% lauric acid |
|
Self-pollinating |
|
Dormant |
|
1000 seed weight = 1.36 g |
| Chromosome number = 12 |
|
|
|
 |
|
|
|
Cuphea carthagenensis
|
Perennial |
|
65.7% lauric acid |
|
Self-pollinating |
|
Non-dormant |
|
1000 seed weight = 0.69 g |
|
Chromosome number = 8 |
|
Cuphea lutea
|
Annual |
|
37.7% lauric acid |
|
Self-pollinating |
|
Dormant |
|
1000 seed weight = 2.49 g |
|
Chromosome number = 14 |
|
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