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      • Research Journal :: Jurnal Ilmu Pertanian Indonesia
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      Transfer gen badh2 termutasi varietas aromatik mentik Wangi ke varietas nonaromatik ciherang

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      Date
      2011-04
      Author
      Seno, Djarot Sasongko Hami
      Padmadi, Bambang
      Praptiwi, Dewi
      Sugihartati
      Taufiq
      Fatahajudin, Muhammad Taufan
      Al Anshary, Helmy Ramadhan
      Santoso, Tri Joko
      Mas’ud, Zainal Alim
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      Abstract
      Replacement of non-fragrant-native badh2 gene with mutated badh2 of fragrant rice is an alternative to engineer new fragrant rice varieties with good agronomic traits as those of non-fragrant. Fragrant gene (mutated badh2) of Mentik wangi donor was introgressed into non-fragrant Ciherang host through site-directed crossing. Mentik Wangi was crossed with Ciherang, and the progeny was further backcross until BC3F1. Bradbury marka-assisted PCR was used to select progeny in every cross and backcross generation. Ciherang, Mentik Wangi, and their cross/backcross showed different PCR profiles. The statues of badh2 gene (native/mutated), as well as alleles (homozygote/heterozygote) between samples were identified. Mutated badh2-introgression was also observed within the selected heterozygote cross or backcross progenies (F1, BC1, BC2, and BC3), indicated successful transfer of mutated badh2 gene from donor to host.
       
      Penggantian badh2 utuh (native) padi nonaromatik dengan gen serupa yang termutasi dari varietas aromatik merupakan alternatif dalam pengembangan varietas aromatik baru nontransgenik dengan karakter agronomi sebaik padi nonaromatik. Pada penelitian ini dilakukan introgresi gen aroma (badh2 termutasi) dari Mentik Wangi (donor) ke varietas nonaromatik Ciherang (host) secara persilangan terarah (site-directed crossing). Mentik Wangi disilangkan dengan Ciherang, selanjutnya dibackross dengan Ciherang sampai BC3F1. Pada setiap generasi persilangan/backross dilakukan seleksi PCR berbantuan marka gen badh2. Hasil yang diperoleh menunjukkan perbedaan amplikon sampel Ciherang, Mentik Wangi dan persilangan/backross kedua varietas. Selain dapat dibedakan status gen (utuh/termutasi) dan alel (homozygot/heterozygot) badh2, juga teramati introgresi gen badh2 termutasi pada progeni hasil persilangan/backross (F1, BC1, BC2, dan BC3) yang terseleksi, menunjukkan keberhasilan transfer gen badh2 termutasi dari varietas donor ke host.
       
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      http://repository.ipb.ac.id/handle/123456789/71569
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      • Research Journal :: Jurnal Ilmu Pertanian Indonesia [151]

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      Indonesia DSpace Group 
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