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논문 기본 정보

자료유형
학술저널
저자정보
Ngoc Ha Luong (Department of Agronomy Chungnam National University Daejeon 34134 Korea) Yuna Jeong (Department of Agronomy Chungnam National University Daejeon 34134 Korea) 심규찬 (Department of Agronomy Chungnam National University Daejeon 34134 Korea) 김선하 (Department of Agronomy Chungnam National University Daejeon 34134 Korea) 이현숙 (Department of Agronomy Chungnam National University Daejeon 34134 Korea) Cheryl Adeva (Department of Agronomy Chungnam National University Daejeon 34134 Korea) Van Anh Do Thi (Department of Biochemistry Chungnam National University Daejeon 34134 Korea) 안상낙 (Department of Agronomy Chungnam National University Daejeon 34134 Korea)
저널정보
한국육종학회 Plant Breeding and Biotechnology Plant Breeding and Biotechnology Vol.7 No.3
발행연도
2019.1
수록면
245 - 256 (12page)

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Previously, we mapped the qSPP7 QTL affecting the number of spikelets per panicle (SPP) on rice chromosome 7 using near-isogenic line (NIL WH29001) derived from an interspecific cross between the japonica ‘Hwaseong’ and O. minuta. In the present study, we confirmed this QTL using progeny derived from a cross between IL102, a WH29001 sister line and Hwaseong. Genetic analysis determined that qSPP7 was located between a KASP marker KJ07-049 and RM21605. The O. minuta segment on chromosome 7 introgressed into the Hwaseong background was associated with an increase in SPP. The panicle structure of IL102 revealed that not only the number of SPP increased significantly, but also the number of branches per panicle increased as compared to Hwaseong suggesting that the donor allele of qSPP7 promotes branching in the genetic background of Hwaseong. Linkage analysis indicated that qEhd1 on chromosome 10 is involved in the difference in heading date of IL102 and Hwaseong. Experiments under 3 different day length conditions revealed that IL102 always showed earlier heading and higher SPP as compared to Hwaseong indicating that the effect of qSPP7 in the Hwaseong background was not dependent on photoperiod, and SPP increased in proportion to the number of days to heading.

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