KMID : 0613820110210040502
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Journal of Life Science 2011 Volume.21 No. 4 p.502 ~ p.508
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Early Identification of Putative Zygotic Seedlings in Citrus Crosses between ¡®Morita unshiu¡¯ (Citrus. unshiu Marc.) and ¡®Ponkan¡¯ (C. reticulata Blanco) Using RAPD and SRAP
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Yun Su-Hyun
Moon Yong-Sun Jin Seong-Beom Kang In-Kyu Lee Dong-Hoon
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Abstract
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The purpose of this study was to evaluate the methods of identifying zygotic seedlings of crosses between ¡®Morita unshiu¡¯ (Citrus. unshiuMarc.) and ¡®Ponkan¡¯ (C. reticulataBlanco). In order to investigate the frequency and position of zygotic seedlings and to determine the efficiency of zygotic seedling identification, random amplified polymorphic DNA (RAPD) and sequence-related amplified polymorphism (SRAP) were performed using UBC (9, 27, 229, 230, and 254) primers and F4/R27, F7/R14, F12/R10, and F44/R62 primer sets, respectively. A total of 37 putative zygotic seedlings out of 55 individuals were selected by RAPD and SRAP. The F7/R14 primer pair showed a screening ability of 45.5% (25/55), whereas the primer UBC27 revealed the highest efficiency of zygotic seedling identification (50.9%, 28/55). When both UBC27 and F7/R14 were properly used for selection of hybridized seedlings of ¡®Morita unshiu¡¯ (C. unshiuMarc.) and ¡®Ponkan¡¯ (C. reticulataBlanco), screening efficiency was increased to 60% (33/55) for putative zygotic seedlings. Thus, it is possible to select putative hybrid zygotic seedlings in an accurate and effective manner by RAPD and SRAP.
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KEYWORD
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DNA marker, hybrid zygotic seedling, polyembryony, polymorphic bands
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