Inheritance of the blood-flesh trait in peach
1998
Inheritance of the blood-flesh (red-violet mesocarp) trait in peach [Prunus persica (L.) Batsch.] was investigated in S1, S2, F1, F2, F3, BC1P1, and BC1P2 families derived from 'Harrow Blood', a clone showing anthocyanin accumulation in fruit about 45-50 days after anthesis. This trait invariably was associated with the red midrib leaf phenotype in 'Harrow Blood', an S1 family from 'Harrow Blood', and in green leaf F2 progeny derived from 'Harrow Blood' x 'Rutgers Red Leaf 2n'. A segregation ratio of about 3 blood-flesh :1 wild-type was observed in the S1 family, but F1 progeny produced only wild-type fruit. Examination of F2 progeny segregating for the blood-flesh and red leaf traits revealed no evidence of epistasis. Based on segregation ratios in F1, F2, F3, BC1P1, and BC1P2, families from this cross, the F1 family from 'Contender x ('Harrow Blood' x 'Rutgers Red Leaf 2n'), and six additional F1 families from crosses between 'Harrow Blood' and green leaf clones with wild-type fruit, we propose that blood-flesh is controlled by one gene, designated bf (blood-flesh). The blood-flesh phenotype was associated with reduced tree height in S1 and F2 progeny derived from 'Harrow Blood'. Segregation for leaf blade color deviated significantly (P = 0.05) from the expected 3 red: 1 green ratio in six of the F2 families derived from selfing seven F1 trees from 'Harrow Blood' x Rutgers Red Leaf 2a'.
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