Generation of strawberry hybrids population through selection potential of anthocyanin-rich cultivars for breeding intervention
This research aimed to generate a series of strawberry hybrids population through selection of potential of anthocyanin-rich cultivars for breeding intervention. Two parental cultivars (Praratchatan No.72 and Praratchatan No.80) were crossed by complete diallel with a mix of the same breed and mixed breed as follows: hybrid pair no.1 (Praratchatan No.80 × Praratchatan No.72), hybrid pair no.2 (Praratchatan No.72 × Praratchatan No.80), hybrid pair no.3 (Praratchatan No.80 × Praratchatan No.80) and hybrid pair no.4 (Praratchatan No.72 × Praratchatan No.72). Results showed that hybrid pair no.1 had the most normal shape (100%) and hybrid pair no.2 had the highest achenes (2,432 seeds). We selected a total number of 300 seeds for each pair for germination test. It was found that hybrid pair no.2 had the highest germination percentage and survival rate at 61.3 and 45.1%, respectively. The survival rate of seeds of all hybrid pairs was accounted by planting them under greenhouse condition and 320 plants survived. From these results, we selected 9 plants in all hybrid pairs with fruits having the richest anthocyanin content. Our results revealed that among the plants evaluated, hybrid pair no.2 line-38 had the highest vegetative growth with the canopy width, canopy height, petiole length measured at 27, 25 and 16 cm, respectively. In addition, these lines have had the highest no. of leaves (24 leaves), the widest leaf area (3,024 cm2) and had an average of 10 available fruits per plant. These lines have also fruits with the highest L*, chroma, and hue angle of the peel color, (31.12, 44.87, 50.03°) and of the flesh color (41.31, 28.65, 65.30°). Moreover, the optimal pH, ratio of total soluble solids to titratable acidity, and total anthocyanin content were found to be highest in these lines at 3.07, 24, 42.84 mg 100 g‑1 FW, respectively.
Sirijan, M., Sujipuli, K., Pipattanawong, N. and Chaiprasart, P. (2019). Generation of strawberry hybrids population through selection potential of anthocyanin-rich cultivars for breeding intervention. Acta Hortic. 1265, 73-80
anthocyanin, population, strawberry hybrid plant