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이 논문의 연구 히스토리 (9)
2023
2016
2014
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This study was conducted to develop the early maturing rice lines with genes conferring resistance to bacterial blight and rice stripe virus to enhance the adaptability in plain area. Unkwang carrying Xa3 was used as a recurrent parent and SR30075 carrying Xa4+xa5+Xa21+Stvb-i was used as a donor parent. RL1(Resistant Line, BC1F7), RL2, RL3, RL4, and RL5(BC2F6) were bred through bio-assay of K3a race inoculation and phenotypic selection of agronomic traits. The presence of introduced genes was confirmed by testing the resistance levels against bacterial blight and rice stripe virus and then double-checked by using DNA marker. RL1 has all target genes, Xa3+xa5+Xa21+Stvb-i. RL2, RL3, and RL5 have Xa3+Xa21+Stvb-i whereas RL4 has only Xa21. Rice lines carrying Stvb-i showed resistance reaction to rice stripe virus. The combinations of bacterial blight resistant genes(Xa3+xa5+Xa21 and Xa3+Xa21) were found to be promising, as the rice lines carrying these genes enhanced a strong resistant reaction against 16 bacterial blight isolates. Also, the inoculation of K3a race did not alter the brown rice yield, ripened grain ratio and kernel quality of brown rice compared to control. Although RL1 containing all the target resistance genes showed excellent resistance performance, it is not suitable to cultivate in plain area due to instability to lodging, 80% yield level than Unkwang, and low grain quality. RL5 backcrossed twice with Unkwang was found to be a promising line due to its effective resistance gene combination, Xa3+Xa21+Stvb-i and good agronomic traits such as stability to lodging, higher yield and quality compared to Unkwang.
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참고문헌 (21)
참고문헌 신청
Chung KY / 1975 / A new high yielding rice variety resistant to rice stripe virus ‘Milyang 15 (Nagdong)’ / Res. Rept. NYAES 17 : 17 ~ 24
Kauffman HE / 1973 / An improved technique for evaluating resistance of rice varieties to Xanthomonas oryzae / Plant Disease Reporter 57 : 537 ~ 541
Khush G. / 1989 / Multiple disease and insect resistance for increased yield stability in rice / Progress in irrigated rice research : 79 ~ 92
Kim YG / 2010 / Current status and future prospects of development of rice varieties / Food Preservation Processing Industry 9 : 75 ~ 85
Kwon TM / 2012 / Fine mapping and identification of candidate rice genes associated with qSTV11 SG, a major QTL for rice stripe disease resistance / Theor. Appl. Genet 125 :
Kauffman HE / 1973 / An improved technique for evaluating resistance of rice varieties to Xanthomonas oryzae / Plant Disease Reporter 57 : 537 ~ 541
Khush G. / 1989 / Multiple disease and insect resistance for increased yield stability in rice / Progress in irrigated rice research : 79 ~ 92
Kim YG / 2010 / Current status and future prospects of development of rice varieties / Food Preservation Processing Industry 9 : 75 ~ 85
Kwon TM / 2012 / Fine mapping and identification of candidate rice genes associated with qSTV11 SG, a major QTL for rice stripe disease resistance / Theor. Appl. Genet 125 :
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