ISHS Acta Horticulturae 800: X International Pear Symposium
HERITABILITY OF FRUIT CHARACTERS OF INTERSPECIFIC HYBRIDS BETWEEN PYRUS PYRIFOLIA AND P. USSURIENSIS OR P. BRESCHNEIDERI |
| Authors: | IL.S. Shin, Y.U. Shin, H.S. Hwang |
| Keywords: | inheritance, ripening time, fruit weight, soluble solids, flesh firmness |
| DOI: | 10.17660/ActaHortic.2008.800.70 |
| Abstract:
Pear characters such as fruit ripening time, fruit weight, soluble solids and flesh firmness were analyzed to obtain information on the inheritance using interspecific hybrid seedling populations of 17 crossing combinations between Pyrus pyrifolia and P. ussuriensis or P. bretschneideri and their parental cultivars. The average values for the ripening time (calculated as days after full bloom), fruit weight, soluble solids and flesh firmness in the parental cultivars were 193 days, 416 g, 14.5 °Bx and 1.41 kg/5 mmΦ, respectively, and the coefficients of variation were 7.69, 20.22, 10.17 and 14.81%, respectively. The average values of individual crossing combination during 2000–2003 ranged from 159 to 185 days after full bloom, 291 g to 447 g in fruit weight, 12.1 °Bx to 13.5 °Bx in soluble solids and 1.06 to 1.89 kg/5 mm in flesh firmness, and also the overall average values of 17 cross combinations for these characters were 174 days after full bloom, 373 g in fruit weight, 12.7 °Bx in soluble solids and 1.24 kg/5 mm in flesh firmness. The average value of heritability was 0.94 in days after full bloom, 0.46 in fruit weight, 0.48 in soluble solids and 0.70 in flesh firmness. | |
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