Genetic improvement of resistance to blast and bacterial blight of the elite maintainer line Rongfeng B in hybrid rice (Oryza sativa L.) by using marker-assisted selection

2012 ◽  
Vol 11 (67) ◽  
Author(s):  
Chongyun Fu
Keyword(s):  
Oryza Sativa ◽  
Marker Assisted Selection ◽  
Genetic Improvement ◽  
Bacterial Blight ◽  
Hybrid Rice ◽  
Oryza Sativa L ◽  
Maintainer Line

scholarly journals Comparative study of floral characteristics in the component lines of hybrid rice (Oryza sativa L.)

2014 ◽  
Vol 43 (1) ◽  
pp. 1-8
Author(s):  
MJ Hasan ◽  
Umma Kulsum ◽  
MH Rahman ◽  
A Akter ◽  
AKM Shamsuddin
Keyword(s):  
Oryza Sativa ◽  
Hybrid Rice ◽  
Oryza Sativa L ◽  
Floral Traits ◽  
Restorer Line ◽  
Hybrid Seed Production ◽  
Filament Length ◽  
Style Length ◽  
Maintainer Line ◽  
Anther Length

Significant variations were obtained among the component lines for most of the floral traits. BRRI9A exhibited superiority for angle of open florets, stigma length and breadth, anther breadth, filament length, style length and panicle exertion rate while its corresponding maintainer lines BRRI9B showed superiority for duration of open florets, stigma length and breadth, anther breadth and filament length. This indicated BRRI9A and its corresponding maintainer line BRRI9B possessed very good floral traits that influence out crossing. Among the restorer lines BR168R showed superiority for duration of open florets, angle of open florets, duration of bloomed florets/panicle, stigma length, anther length and number of pollen/microscopic focus. This suggested BR168R could be used as promising restorer line with BRRI9A for hybrid seed production in local condition.DOI: http://dx.doi.org/10.3329/bjb.v43i1.19739 Bangladesh J. Bot. 43(1): 1-8, 2014 (June)

scholarly journals Studies on Effect of Age of Seedling and Levels of Nitrogen on Performance of Hybrid Rice (Oryza sativa L.)

2019 ◽  
Vol 10 (4) ◽  
pp. 382-388
Author(s):  
Govinda Kumar ◽  
◽  
Shivasankar Acharya ◽  
S. K. Pathak ◽  
Sunil Kumar ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Hybrid Rice ◽  
Oryza Sativa L ◽  
Effect Of Age

scholarly journals Genetic diversity analysis in indigenous rice (Oryza sativa L.) germplasm for Bacterial Leaf Blight (Xanthomonas oryzae pv. Oryzae) using resistance genes linked markers

2021 ◽  
Author(s):  
Khannetah K. R . ◽  
Ramchander S. ◽  
Andrew Peter Leon M. T ◽  
Shobha D. ◽  
Saravanan S. ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Resistance Genes ◽  
Bacterial Blight ◽  
Rice Yield ◽  
Oryza Sativa L ◽  
Molecular Data ◽  
Lesion Length ◽  
R Genes ◽  
Leaf Clipping ◽  
Moderately Resistant

Abstract Among rice ( Oryza sativa L.) diseases, bacterial blight (BB), caused by Xanthomonas oryza pv. Oryzae , plays a pivotal role in decreasing rice yield. BB is reported to be the most serious constraint to improving rice yield. The present investigation assessed the potentiality of bacterial blight resistance and molecular characterization of 100 rice accessions for four major BB resistance genes, viz., Xa4, xa5, xa13 and Xa21 . Disease screening was carried out under glasshouse conditions using a BB culture isolated from BB-infected rice fields through the leaf clipping method. Analyses of 13 BB resistance genes linked with polymorphic microsatellites markers indicated the presence of single-, two-, three- and four-gene combinations of xa5, xa13, Xa4 and Xa21 . We found four accessions to be resistant; 34 accessions to be moderately resistant; 49 accessions to be moderately susceptible and 13 accessions to be susceptible. Among the resistant lines, IR12L110, Namcheonbyeo, Dhalaheera and SahbhagiDhan recorded a minimum lesion length of 3.7cm, 4.2cm, 4.67cm and 8.3 cm, respectively. Phylogenetic tree, constructed using molecular data, grouped the rice germplasm into four major clusters. R genes xa 5 and Xa4 contributed 14 positive compatible R genes, each belonging to 28 germplasm for BB resistance. The potential genetic resources identified as resistant to BB can be used as donors for the improvement of rice BB resistance in rice breeding programs.

Quality and yield of hybrid rice (Oryza sativa L.) as affected by foliar application of growth regulators

2021 ◽  
Vol 34 (1) ◽  
pp. 102-105
Author(s):  
Pawan Kumar Goutam ◽  
S.P. Kushwaha ◽  
D.K. Tripathi ◽  
Laxmi Prajapati
Keyword(s):  
Oryza Sativa ◽  
Growth Regulators ◽  
Hybrid Rice ◽  
Foliar Application ◽  
Oryza Sativa L

scholarly journals Marker-assisted selection and gene pyramiding for resistance to bacterial leaf blight disease of rice (Oryza sativa L.)

2019 ◽  
Vol 33 (1) ◽  
pp. 440-455 ◽  
Author(s):  
Samuel Chibuike Chukwu ◽  
Mohd Y. Rafii ◽  
Shairul Izan Ramlee ◽  
Siti Izera Ismail ◽  
Yussuf Oladosu ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Marker Assisted Selection ◽  
Oryza Sativa L ◽  
Gene Pyramiding ◽  
Leaf Blight ◽  
Bacterial Leaf Blight ◽  
Blight Disease

scholarly journals SSRs for Marker-Assisted Selection for Blast Resistance in Rice (Oryza sativa L.)

2011 ◽  
Vol 30 (1) ◽  
pp. 79-86 ◽  
Author(s):  
Sadegh Ashkani ◽  
Mohd Yusop Rafii ◽  
Ibrahim Rusli ◽  
Meon Sariah ◽  
Siti Nor Akmar Abdullah ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Marker Assisted Selection ◽  
Oryza Sativa L ◽  
Blast Resistance ◽  
Selection For
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