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벼 RAPD 표지 이용 低溫幼苗生育관여 量的形質遺傳子座(QTL) 分析
Kyung Min Kim(金敬旻),Jae Keun Sohn(孫再根),Kato Akira(加藤明),Oono Kiyoharu(大野 淸春) 한국육종학회 1997 한국육종학회지 Vol.29 No.3
The purpose of this study was to detect and map quantitative trait loci(QTL) related to rice seedling growth at low temperature. The F₂ populations of 94 plants was obtained from a cross between a coldsusceptible indica cultivar ‘Dular’ and a cold-tolerant japonica cultivar ‘Toyohatamochi’. A molecular genetic map was constructed using random amplified polymorphic DNA (RAPD) markers and QTL associated with the cold tolerance of rice seedling at 18℃ was analyzed using MAPL-MQTL computer program. Analysis of RAPD patterns regarding to cold tolerance in F₂ population of Dular/Toyohatamochi cross indicated that two RAPD markers 20 and 29 were located with 21 cM apart on chromosome No. 5 and QTL related to seedling growth at 18℃ was closely associated with these DNA markers. The association of the RAPD markers on chromosome 5 with the seedling growth at 18℃ was observed in a separate analysis using F₃ plants of the cold-susceptible indica cultivar ‘K-sen 4’ and the cold-tolerant javanica cultivar ‘Silewah’.
식물배양세포의 저장관계 유전자탐색과 형질전환에의 활용 1. 벼 배양세포의 건조보존기구와 관련유전자 선발
김길웅,대야청춘,신동현,Virigool, S.,Shinzaki, K. Y.,홍석영 경북대학교 유전공학연구소 1995 遺傳工學硏究所報 Vol.10 No.1
A system for long-term dry preservation of rice (Oryza sativa L.) callus and a protection mechanism regulating the survival of dried callus were investigated. The highest survival of dried callus and the highest regeneration of plantlets were observed in calli which had been pretreated with 10^(-5) M abscisic acid (ABA) in the presence of 90 g/L of sucrose. A corresponding accumulation of the RNA of the rab 16A gene (a rice gene induced by ABA and water stress) was detected in dried callus, mature seeds, and callus pretreated with 10^(-5) M ABA. Analysis of protein by two dimensional polyacrylamide gel electrophoresis(2D-PAGE) demonstrated different protein patterns in dried callus pretreated with 10-s M ABA and 90 g/L of sucrose compared to callus dried without the pretreatment. Three different cDNA clones, pDHS1, pDHS2, and pDHS3 contained cDNA inserts in size of 3.8, 3.2, and 3.2 kilobase pairs, respectively, were isolated by using Nhe I fragment from rab 16A as a probe. All the three clones exhibited unique restriction maps.