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• W3139653189 abstract "Hybrid rice is very important in agriculture production in China.Its selecting property makes it significant to study the genetic performance of F 1's date to (DH).Minghui63,an indica rice restorer line,has been wildly applied to hybrid rice seed production in China,but the photoperiod sensitivity gene of date in this restorer line is still unknown.This definitely limited the further use of this restorer line in breeding practice and re production of hybrid seeds.To solve this problem,using time nearly isogenic lines EG0～EG7?ER LR and two date QTL isogenic lines,NIL ( Hd1 ) and NIL ( Hd4 ),with the genes of Nipponbare but Hd1 (Se 1 ) and Hd4 (E 1 ) genes from Kasalath,respectively,we performed a genetic analysis of with special reference to photoperiod sensitivity loci,using natural long days in Nanjing(32°N) and natural short days in Linshui county,Hainan province(18°29′N),where the average day length is about 14 h and 11 6 h during the course of rice growing,respectively.The F 1 and F 2 generations from the crosses heading time nearly isogenic lines × Minghui63 were subjected to genetic analyses.Experimental results showed that carries photoperiod sensitivity allele gene E 1 and E 3 in E 1 and E 3 loci,respectly,and a photoperiod insensitivity allele Se 1 e in Se 1 locus,and it also carries a recessive inhibitor for photoperiod sensitivity gene E 1 .Meanwhile,the photoperiod sensitive genes, E 1 and the photoperiod insensitive genes, Se 1 e ,in were also identified by crossing with the nearly isogenic lines for time QTLs ,NIL( Hd1 )and NIL( Hd4 ).The results indicated that Minghui63's genotype of date was: E 1E 1e 2e 2E 3E 3Se 1 eSe 1 e . The result from this research indicated that carries a major dominant photoperiod sensitive gene E 1 in E 1 locus,and our previous researches indicated that Zhenshan97A carried a major dominant photoperiod sensitive gene Se 1 n in Se 1 locus and a recessive inhibitor gene i Se 1 .The DH of the hybrid rice Shanyou63 is 94 7 in Nanjing,lying between Zhenshan97A's and Minghui63's,but more nearer to late maturity parent Minghui63.It has been not expressed that E 1 gene usually prolongs days to by about 20 days when coexisting with Se 1 u or Se 1 n .This is possibly made by that inhibitor genes exist in respective parents,which make DH transgression of Shanyou63 not appear.This phenomenon indicated that the date of indica hybrid rice is resulted from the interaction among the photoperiod sensitive genes and their inhibitor genes in the sterile and the restorer lines." @default.
• W3139653189 created "2021-04-13" @default.
• W3139653189 creator A5063519973 @default.
• W3139653189 date "2003-01-01" @default.
• W3139653189 modified "2023-09-25" @default.
• W3139653189 title "Analysis of Photoperiod-sensitivity Genes in Minghui63,an Restorer Line of indica Rice( Oryza sativa L.)" @default.
• W3139653189 hasPublicationYear "2003" @default.
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