An R2R3 MYB transcription factor determines red petal colour in an Actinidia(kiwifruit) hybrid population

BMC Genomics

Table 1 Phenotypes of four Actinidia hybrid backcross families

Family	Red male	White male	Red female	White female	Total Red	Total White	Pvalue H_O: ratio = 1:1
1	26	24	16	22	42	46	0.749
2	12	14	12	16	24	30	0.497
3	10	14	10	13	20	27	0.382
4	29	25	19	17	48	42	0.598
Total	77	77	57	68	134	145	0.550

Segregation for petal colour and gender in two families of backcross seedlings of (A. eriantha x A. chinensis var. chinensis) x A. chinensis var. chinensis (families 1 and 2), and two families of backcross seedlings of (A. chinensis var. chinensis x A. eriantha) x A. chinensis var. chinensis (families 3 and 4). The ratio of red to white petal colour of approximately 1:1 suggests that in petals of these hybrid families colour inheritance is a monogenic dominant trait.

ISSN: 1471-2164