scholarly journals Characterization of near-isogenic lines carrying QTL for high spikelet number with the genetic background of an indica rice variety IR64 (Oryza sativa L.)

2012 ◽  
Vol 62 (1) ◽  
pp. 18-26 ◽  
Author(s):  
Daisuke Fujita ◽  
Analiza G. Tagle ◽  
Leodegario A. Ebron ◽  
Yoshimichi Fukuta ◽  
Nobuya Kobayashi
Keyword(s):  
Oryza Sativa ◽  
Genetic Background ◽  
Oryza Sativa L ◽  
Indica Rice ◽  
Rice Variety ◽  
Near Isogenic Lines ◽  
Spikelet Number ◽  
Isogenic Lines

A set of near-isogenic lines for blast resistance genes with an Indica-type rainfed lowland elite rice (Oryza sativa L.) genetic background

2011 ◽  
Vol 123 (1) ◽  
pp. 19-27 ◽  
Author(s):  
Yohei Koide ◽  
Leodegario A. Ebron ◽  
Hiroshi Kato ◽  
Hiroshi Tsunematsu ◽  
Mary Jeanie Telebanco-Yanoria ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Resistance Genes ◽  
Genetic Background ◽  
Oryza Sativa L ◽  
Blast Resistance ◽  
Near Isogenic Lines ◽  
Isogenic Lines ◽  
Rainfed Lowland ◽  
Blast Resistance Genes

scholarly journals Enhancement of Regeneration Efficiency through Callus Induction Media Using 2,4-Dicholorophenoxyacetic acid in Indica Rice (Oryza sativa L. var. Ciherang)

2017 ◽  
Vol 18 (2) ◽  
pp. 91
Author(s):  
Kunti Anis Azizah ◽  
Didik Pudji Restanto ◽  
Bambang Sugiharto
Keyword(s):  
Oryza Sativa ◽  
Callus Induction ◽  
Embryogenic Callus ◽  
Oryza Sativa L ◽  
Indica Rice ◽  
Rice Variety ◽  
Rice Cultivar ◽  
Medium Composition ◽  
Regeneration Frequency ◽  
Optimum Result

Indica rice variety Ciherang is the most planted variety in Indonesia, but the micropropagation technique is restricted because it is known has low regeneration frequency and included as recalcitrant cultivar for tissue culture and tranformation activities. One of solution to resolve that problem is developing a technique of somatic embryogenesis in callus of ciherang rice cultivar. The aims of study were to determine medium composition for inducting embryogenic callus in Ciherang rice and to know the effectivity of rice regeneration using callus as explant. The methods were included induction of embryogenic callus in callus induction media (CIM) containing MS basal, Proline 600 mg/l, Casein Hidrolisat 300 mg/l, phytagel 2,5 g/l, BAP 0.25 mg/l, sukrosa 30 %, and 2,4-D in different concentration, from 2,4-D 0 mg/l as control (CIM 1), 2,4-D 2 mg/l (CIM 2), 2,4-D 3 mg/l (CIM 3), and 2,4-D 4 mg/l (CIM 4). It then be continued to regenerate the calli in RM 1 medium containing MS basal, NAA 0,2 mg/l, Kinetin 2 mg/l, Agarose 10 g/l, and sukrosa 30 %, pH 5,8 for six days in dark and RM2 medium containing MS basal , NAA 0,2 mg/l, Kinetin 2 mg/l, Agarose 8 g/l, sukrosa 30 %, pH 5,8 in light room. Results showed CIM 4 medium using 2,4-D 4 mg/l gave optimum result in calli induction with procentage 57,63% and CIM 3 using 2,4-D 3 mg/l gave optimum result in embryonic calli induction with procentage 53,63%. Result of embryonic calli gave regeneration frequency procentage is 9,6%. The total planlet obtained after five weeks old in regeneration medum were 11 planlets ready for aclimatization. Keywords: Somatic embryo, Indica rice (Oryza sativa L. var. Ciherang), Callus

scholarly journals The Development and Characterization of Near-Isogenic and Pyramided Lines Carrying Resistance Genes to Brown Planthopper with the Genetic Background of Japonica Rice (Oryza sativa L.)

Plants ◽  
2019 ◽  
Vol 8 (11) ◽  
pp. 498
Author(s):  
Cuong D. Nguyen ◽  
Holden Verdeprado ◽  
Demeter Zita ◽  
Sachiyo Sanada-Morimura ◽  
Masaya Matsumura ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Resistance Genes ◽  
Genetic Background ◽  
Oryza Sativa L ◽  
Rice Variety ◽  
Brown Planthopper ◽  
Nilaparvata Lugens ◽  
Japonica Rice ◽  
Rice Varieties ◽  
Nilaparvata Lugens Stål

The brown planthopper (BPH: Nilaparvata lugens Stål.) is a major pest of rice, Oryza sativa, in Asia. Host plant resistance has tremendous potential to reduce the damage caused to rice by the planthopper. However, the effectiveness of resistance genes varies spatially and temporally according to BPH virulence. Understanding patterns in BPH virulence against resistance genes is necessary to efficiently and sustainably deploy resistant rice varieties. To survey BPH virulence patterns, seven near-isogenic lines (NILs), each with a single BPH resistance gene (BPH2-NIL, BPH3-NIL, BPH17-NIL, BPH20-NIL, BPH21-NIL, BPH32-NIL and BPH17-ptb-NIL) and fifteen pyramided lines (PYLs) carrying multiple resistance genes were developed with the genetic background of the japonica rice variety, Taichung 65 (T65), and assessed for resistance levels against two BPH populations (Hadano-66 and Koshi-2013 collected in Japan in 1966 and 2013, respectively). Many of the NILs and PYLs were resistant against the Hadano-66 population but were less effective against the Koshi-2013 population. Among PYLs, BPH20+BPH32-PYL and BPH2+BPH3+BPH17-PYL granted relatively high BPH resistance against Koshi-2013. The NILs and PYLs developed in this research will be useful to monitor BPH virulence prior to deploying resistant rice varieties and improve rice’s resistance to BPH in the context of regionally increasing levels of virulence.

QTL for spikelet number from a high-yielding rice variety, Hoshiaoba, detected in an introgression line with the genetic background of an indica rice variety, IR64

Euphytica ◽  
2013 ◽  
Vol 192 (1) ◽  
pp. 97-106 ◽  
Author(s):  
Yohei Koide ◽  
Daisuke Fujita ◽  
Analiza G. Tagle ◽  
Kazuhiro Sasaki ◽  
Tsutomu Ishimaru ◽  
...  
Keyword(s):  
Genetic Background ◽  
Indica Rice ◽  
Rice Variety ◽  
Introgression Line ◽  
Spikelet Number

Corrigendum to “Identification and characterization of quantitative trait loci affecting spikelet number per panicle in rice (Oryza sativa L.)”

2005 ◽  
Vol 92 (1) ◽  
pp. 107 ◽  
Author(s):  
Sohei Kobayashi ◽  
Yoshimichi Fukuta ◽  
Tadashi Yagi ◽  
Tadashi Sato ◽  
Mitsuru Osaki ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Quantitative Trait Loci ◽  
Quantitative Trait ◽  
Oryza Sativa L ◽  
Spikelet Number ◽  
Trait Loci ◽  
Identification And Characterization
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