Mapping of genes controlling rice seed quality by using of microsatellite marker
2007
Ebadi, Ali Akbar . | Roudbar Kelari,Farshad . | Allagholipour,Mehrzad . | Hosieni,Maryam . | Novarian,Nora . | Mohamadi,Mohammad . | Yakta,Mitra.
Rice grain Quality includes the milling, appearance, cooking and eating qualities. Amylose content (AC), gelatinization temperature (GT) and gel consistency (GC) are important traits determining rice eating and cooking quality. A population of F2 derived from Hashemi × Neamat cross was used to study the genetic control of AC, GT and GC traits. From 150 microsatellite markers were tested on both parents just 62 of them had different bands for tow parents in electrophoresis procedure and used for linkage map. Two different QTL analysis methods were used to identify QTLs controlling eating quality, that the result of them approximately was the same. Eight QTLs for AC were detected on Chromosomes 3 (two QTLs), 4(one QTL), 6 (four QTLs) and 12(one QTL). One major QTL on chromosome 6 (ac6a) was detected that explained 52% of phenotypic variation. Two QTLs on chromosome 1, six QTLs on chromosome 6 and one QTL on chromosome 12 were detected for GT. Four major QTLs were mapped on chromosome 6 (gt6b, gt6c, gt6d and gt6e) that they wre closed to each other. Ten QTLs were detected for GC, one on chromosome 3, one on chromosome 4, six on chromosome 6, one on chromosome 10 and one on chromosome 12. one major QTL were identified for GC on chromosome 6 (gc6a), wich accounted 33% of the phenotypic variation, and it wase the same position with the major QTL for AC trait.
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