Pewarisan Ketahanan Penyakit Blas (Pyricularia Grisea Sacc) pada Persilangan Padi IR64 dengan Oryza Rufipogon Griff  

Oleh:

Utami, Dwinita Wikan ; Aswidinnoor, Hajrial ; Moeljopawiro, Sugiono ; Hanarida, Ida ; Reflinur

Jenis: Article from Journal - ilmiah nasional - terakreditasi DIKTI
Dalam koleksi: Hayati Journal of Biosciences vol. 13 no. 3 (Sep. 2006), page 107-112.
Topik: Penyakit; Inheritance; Blast Resistance; Wild Rice; Oryza Rufipogon
Fulltext: 82.pdf (47.27KB)

Ketersediaan

Perpustakaan Pusat (Semanggi) Nomor Panggil: HH13.8 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

Lihat Detail Induk

Isi artikel

Blast disease affected by pyricularia grisea causes high percentage of yield losses in rice production. The improvement of durable blast resistance is difficult due to the complexity of the inheritance of this trait. This study was conducted to evaluate the genetic control and inheritance of blast resistance trait in interspecific population between IR 64 (accepted indonesian rice type, medium resistant to indonesian blast pathogen) and oryza rafipogon (AA genome, acc No. IRG C # 105491, donor for blast resistance). six populations i.e. P1, P2, F1, F2, BCP1 and BCP2 were inoculated with three indonesian races of blast pathogen. The disease intensity was determined on the basis of disease leaf area (DLA). The three types of gene interactions (additive, dominance, and epistatis) were significantly involved in this trait. Among the digenic epistatic interactions, all of the additive x additive (i), additive x dominance (j) and dominance x dominance (l) contributed to the trait. Broad sense heritability ranged from 50.30 up to 91,20%, while the narrow heritability ranged from 16,98 up to 73,20%. The presence of additive geen effect indicated that selection of this trait in promising.

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