군집소수를 가진 고착립밀도 이삭형 벼 개발 및 특성 분석

• 영문명: Development and Characterization of Rice Lines with Clustered Spikelets and Dense Panicles
• 발행기관: 한국육종학회
• 저자명: 박현수(Hyun-Su Park) 백만기(Man-Kee Baek) 김춘송(Choon-Song Kim) 이건미(Gun-Mi Lee) 박슬기(Seul-Gi Park) 이창민(Chang-Min Lee) 서정필(Jung-Pil Suh) 조영찬(Young-Chan Cho)
• 간행물 정보: 『한국육종학회지』Vol.50 No.4, 415~423쪽, 전체 9쪽
• 주제분류: 농수해양 > 기타농수해양
• 파일형태: PDF
• 발행일자: 2018.12.30

영문 초록

Rice panicle architecture is an important factor affecting yield potential. Korean rice cultivars have a narrow genetic background for panicle architecture. To enhance the yield potential of Korean rice cultivars, we developed and characterized rice lines with new panicle architecture. Rice with improved panicle architecture has clustered spikelets and dense panicles (CD type). CD rice was derived from a cross between “Binhae Col.#1” carrying dense panicles, and “ARC10319” that has the clustered spikelets gene (Cl). CD rice lines had short and semi-erect panicles with two to five high density spikelets clustered at the tips of primary and secondary rachis branches. CD rice lines had dramatically increased numbers of spikelets; almost twice as many as those of Korean rice cultivars. The increase in spikelet number was mainly caused by the increased spikelets and branches on secondary rachises compared to those on primary rachises. The increase in spikelet number was expected to enhance the yield of CD rice by expanding sink capacity. However, the yield of selected lines; CD9, CD27, CD34, and CD39, did not reach the level of the Korean high-yielding cultivars “Boramchan” and “Hanareum2,” due to the reduction in panicle number and grain weight, and poor ripening. Although no substantial yield increase was observed in CD rice, the panicle architecture of CD rice, clustered spikelets, and dense panicles could be new genetic resources as breeding material for diversifying panicle architecture and enhancing yield potential.

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재료 및 방법

결과 및 고찰

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REFERENCES

키워드

Rice Panicle architecture Clustered spikelets Dense panicle Yield