Dissection of combining ability for yield and related traits using introgression lines in the background of a key restorer line in rice (Oryza sativa L.)

2016 ◽  
Vol 193 ◽  
pp. 154-163 ◽  
Author(s):  
Chao Xiang ◽  
Hongjun Zhang ◽  
Hui Wang ◽  
Jie Wang ◽  
Wensheng Wang ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Combining Ability ◽  
Oryza Sativa L ◽  
Introgression Lines ◽  
Restorer Line

scholarly journals Combining Ability and Heterosis for Grain Yield and its Component Traits in Rice(Oryza sativa L.)

2013 ◽  
Vol 5 (1) ◽  
pp. 90-97 ◽  
Author(s):  
Srikrishna LATHA ◽  
Deepak SHARMA ◽  
Gulzar S. SANGHERA
Keyword(s):  
Oryza Sativa ◽  
Grain Yield ◽  
Analysis Of Variance ◽  
Combining Ability ◽  
Oryza Sativa L ◽  
F1 Hybrids ◽  
Component Traits ◽  
Standard Heterosis ◽  
High Degree ◽  
Yield Trials

The nature and magnitude of heterosis and combining ability was studied in 18 F1 hybrids involving three CMS lines and six testers using line × tester analysis. The analysis of variance for combining ability of all the traits showed that variances due to treatments, parents, hybrids were highly significant. The line ‘CRMS 32A’ and testers viz. ‘Super rice-8’, ‘R 1099-2569-1-1’ and ‘Jitpiti’ were identified as good general combiners. The significant differences between lines x testers interaction indicates that SCA attributed heavily in the expression of these traits and demonstrates the importance of dominance or non additive variances for all the traits. The hybrid ‘CRMS 32A’/‘R 1099-2569-1-1’ and ‘APMS 6A’/‘Super rice-8’ were promising for grain yield. The magnitude of relative heterosis, heterobeltiosis and standard heterosis were also estimated for different characters. A high degree of relative heterosis was observed for grain yield (20.45- 82.37%) in the hybrids viz., ‘CRMS 32A’/‘Super rice-8’, ‘APMS 6A’/‘Super rice-8’, ‘APMS 6A’/‘Jitpiti’ and ‘CRMS 32A’/‘R 1099-2569-1-1’. While, a higher degree of: heterobeltiosis (13.60 -68.37%) was observed for grain yield in the hybrids viz., ‘CRMS 32A’/‘Super rice-8’, ‘CRMS 32A’/‘R 1099-2569-1-1’, ‘APMS 6A’/’Super rice-8’ and ‘APMS 6A’/’Jitpiti’. A high degree of standard heterosis was observed for grain yield in the hybrid ‘CRMS 32A’/‘R 1099-2569-1-1’. The hybrid ‘CRMS 32A’/ ‘R 1099-2569-1-1’ recorded a high degree of relative heterosis (62.01%), heterobeltiosis (57.35%) and standard heterosis (15.05 and 25.51% over check hybrids, ‘Mahamaya’ and ‘Indirasona’, respectively) that can be tested on yield trials for its further testing over locations.

scholarly journals Gene action and combining ability studies for protein content and grain quality traits in rice (Oryza sativa L.)

2019 ◽  
Vol 10 (1) ◽  
pp. 58
Author(s):  
M. Asvin Kirubha ◽  
R. P. Gnanamalar ◽  
K. Thangaraj ◽  
A. Kavitha Pushpam ◽  
A. R. Priyanka
Keyword(s):  
Oryza Sativa ◽  
Protein Content ◽  
Combining Ability ◽  
Grain Quality ◽  
Gene Action ◽  
Oryza Sativa L ◽  
Quality Traits

Combining Ability Studies in Rice (Oryza sativa L.) Under Salinized Soil Conditions

2002 ◽  
Vol 1 (2) ◽  
pp. 88-90 ◽  
Author(s):  
T. Mahmood ◽  
G. Shabbir . ◽  
M. Sarfraz . ◽  
M. Sadiq . ◽  
M. K. Bhatti . ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Combining Ability ◽  
Oryza Sativa L ◽  
Soil Conditions ◽  
Salinized Soil

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)

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