지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록· 키워드
오류제보하기
A doubled haploid (DH) lines derived from the cross between high-yielding japonica rice cultivars ‘Deuraechan’ and ‘Boramchan’ was developed to increase diversity of panicle and yield-related traits and select high-yielding lines. Panicle and yield-related traits of DH population consisting of 163 lines and 13 selected high-yielding lines were analyzed using correlation, principal component, and path analysis. Among panicle-related traits, number of spikelets on secondary rachis-branches (SRBs) was more highly correlated with and had more positive effect on number of spikelets (NS) than number of spikelets on primary rachis-branches (PRBs) per panicle. In the DH population, NS had the most positive effect on yield, whereas panicle number per hill (PN) was in the selected lines. PN was significantly positive correlated with ratio of ripened grain (RGG) in both case.
The enhancement of ripening and increase of total spikelets number by increasing PN had more effect on yield than increase of total spiekelts number by increasing NS in the selected lines. Among 13 lines, four lines, AC60, AC152, AC156, and AC161 showed higher yield than Deuraechan (481 kg/10a) and Boramchan (558 kg/10a). Deuraechan exhibited panicle-weight type with low tiller and heavy panicles and Boramchan was slightly panicle-number type with more PN and higher RGG. Selected high-yielding lines showed medium characteristics of parents with improved yield potential. These elite lines could be utilized to develop high-yielding japonica rice.
목차
등록된 정보가 없습니다.
참고문헌 (28)
참고문헌 신청
Ashikari M / 2005 / Cytokinin oxidase regulates rice grain production / Science 309 : 741 ~ 745
Bo-Kyeong Kim / 2003 / Varietal Difference in Panicle Traits as Affected by Nitrogen Level and Planting Density in Japonica Rice / 한국육종학회지 35 (2) : 72 ~ 77
Chung GS / 1980 / Status of japonica-indica hybridization in Korea: Inovative approaches to rice breeding. Int. Rice Res. Inst. Manila : 135 ~ 152
Hirota O / 1990 / Sink activity estimation by sink size and dry matter increase during the ripening stage of barley (Hordeum vulgare) and rice (Oryza sativa) / Ann. Bot 65 :
Huang X / 2009 / Natural variation at the DEP1locus enhances grain yield in rice / Nat. Genet 41 : 494 ~ 497
Bo-Kyeong Kim / 2003 / Varietal Difference in Panicle Traits as Affected by Nitrogen Level and Planting Density in Japonica Rice / 한국육종학회지 35 (2) : 72 ~ 77
Chung GS / 1980 / Status of japonica-indica hybridization in Korea: Inovative approaches to rice breeding. Int. Rice Res. Inst. Manila : 135 ~ 152
Hirota O / 1990 / Sink activity estimation by sink size and dry matter increase during the ripening stage of barley (Hordeum vulgare) and rice (Oryza sativa) / Ann. Bot 65 :
Huang X / 2009 / Natural variation at the DEP1locus enhances grain yield in rice / Nat. Genet 41 : 494 ~ 497
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