Early Identification of Putative Zygotic Seedlings in Citrus Crosses between ‘Morita unshiu’ (Citrus. unshiu Marc.) and ‘Ponkan’ (C. reticulata Blanco) Using RAPD and SRAP

국문 초록 (Abstract)

감귤 ‘성전온주’( C. unshiuMarc)와 ‘병감’( C. reticulateBlanco)을 교배하여 얻은 다배성종자에서 교잡실생을 생육초기에 효과적으로 식별할 수 있는 방법 얻고자 PCR 기법에 바탕을 둔 RAPD와 SRAP 방법을 수행하였다. UBC (9, 27, 229, 230, 254) 프라이머와 SRAP (F4/R27, F7/R14, F12/R10, F44/R62) 프라이머 조합들을 사용하여 55개의 교배종자에서 얻은 실생들을 조사한 결과 37개의 종자에서 교잡실생을 식별할 수 있었다. F7/R14프라이머 조합에서는 45.5% (25/55)의 교잡실생을 식별할 수 있었고, UBC27 프라이머에서는 50.9% (28/55)의 식별효율을 보였다. 성전온주와 병감의 교배종자에서 UBC27 프라이머와 F7/R14 프라이머조합을 동시에 적용하였을 때에는 33개(60%, 33/55)의 종자에서 교잡실생을 식별할 수 있었다. 따라서 RAPD와 SRAP를 이용하였을 때 다배성 종자에서 교잡실생을 생육초기에 효율적으로 식별할 수 있었다.

다국어 초록 (Multilingual Abstract)

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.

목차 (Table of Contents)

• Introduction
• Materials and Methods
• Results and Discussion
• Acknowledgment
• References
• 초록

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