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논문 기본 정보

자료유형
학술저널
저자정보
박지영 (제주대학교 대학원 원예학과) 오은의 (제주대학교 대학원 원예학과) 김어진 (제주대학교 대학원 원예학과) 정승용 (제주특별자치도농업기술원 감귤아열대연구과) 송관정 (제주대학교)
저널정보
한국육종학회 한국육종학회지 한국육종학회지 제56권 제1호
발행연도
2024.3
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Seedlessness is the most important characteristic of citrus and one of its breeding purposes. Triploids are the most reliable way to secure seedlessness and can be developed through crosses between tetraploids and diploids or between diploids and diploids. We evaluated the characteristics of seed formation and recovery frequency of triploids in interploid crosses in this study. Normal seed formation was the highest (85.0%) in crosses of 2x×2x, followed by crosses 4x×2x and 2x×4x. Partially developed seeds were obtained at the highest rate (35.3%) from crosses of 4x×2x with 0.7 seeds per fruit, followed by 2x×2x and 2x×4x with 0.2 and 0.1 seeds per fruit, respectively. The number of undeveloped seeds per fruit was 1.1, 1.0, and 0.3 from the 4x×2x, 2x×4x, and 2x×2x crosses, respectively, and the lowest frequency was recorded in the 2x×2x cross. Diploid plants were mostly obtained in the 2x×2x cross (98.8%), while 73.0% triploids and 27.0% tetraploids were obtained with 4x×2x, and 14.3% diploids, 57.1% triploids, and 28.6% tetraploids were achieved with the 2x×4x cross. Diploid plants were mostly obtained from normal seeds, while ad triploid and tetraploid plants were mostly obtained from partially developed and undeveloped seeds. The results indicated that crosses of 4x×2x were the most efficient and that in vitro culture should be applied to rescue plants from partially developed and undeveloped seeds in triploid breeding programs.

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