592

PROBLEM Solution trait TRI PAR RET Asimma species1 LON OBO

INC PYG TET

DELAYED BEARING Precocity X2 X X X X X X

POOR YIELDS

More floriferous X X X X X X X X3

Higher pollination rate X X X

Self-compatibility X

'Dwarf internode' trait X

Resists T. plummeriana X3

HARVESTING COSTS

Dwarf stature no X X X X! X X X

• Better fruit visibility
• horizontal leaves X X X X X X X
• higher skin color X X
• late ripening fruit X X3
• SEEDINESS OF FRUIT

Fewer seeds per fruit X X X X X X X

Smaller seeds X X X X X X no

Lower seed: fruit ratio X no no no no no no

FRUIT FRAGILITY

Thicker, harder skin X X X X! X X! X

Firmer flesh X

FRUIT PERISHABILITY

Reduced metabolism X

Ability to be picked at earlier ripeness X

Table 5. Potential sources of germplasm for solving problems of genetic significance in Asimina triloba.