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http://dx.doi.org/10.7235/hort.2012.12215

Distribution of S-alleles among Korean Apples by PCR and Cross-pollination  

Heo, Seong (National Institute of Horticultural & Herbal Science, Rural Development Administration)
Kwon, Soon-Il (National Institute of Horticultural & Herbal Science, Rural Development Administration)
Hwang, Jeong-Hwan (National Institute of Horticultural & Herbal Science, Rural Development Administration)
Shin, Yong-Uk (National Institute of Horticultural & Herbal Science, Rural Development Administration)
Kim, Mok-Jong (National Institute of Horticultural & Herbal Science, Rural Development Administration)
Park, Bong Ju (Department of Horticultural Science, Chungbuk National University)
Oh, Sung-Il (Department of Horticultural Science, Chungbuk National University)
Oh, Young-Jae (Department of Horticultural Science, Chungbuk National University)
Kim, Daeil (Department of Horticultural Science, Chungbuk National University)
Publication Information
Horticultural Science & Technology / v.30, no.6, 2012 , pp. 757-763 More about this Journal
Abstract
To acquaint correct information about the fertilizability and analyze S-allele based genetic diversity among Korean apples, we investigated self-incompatibility genotypes by PCR and cross-pollination tests in field. As a consequence, S-genotypes of Korean apples were distributed within narrow genetic diversity as $S_1S_3$ for 'Hongro' and 'Saenara'; $S_1S_9$ for 'Gamhong' and 'Manbok'; $S_3S_5$ for 'Seokwang'; $S_3S_9$ for 'Sunhong', 'Seohong', 'Chukwang', and 'Hwahong'. Coupled with cross-pollination experiments in field, our results provide support for the view that apples are fully compatible when both of their S-loci differ and semi-compatible when they carry one different and one identical S-locus. Furthermore, the results of this study indicate that S-alleles have to be extended to various genotypes for Korean apple breeding.
Keywords
breeding; compatibility; diversity; Malus ${\times}$ domestica; S-RNase;
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