Genetic Evaluation and Selection Criteria of Hybrid Rice in 
Irrigated Ecosystem of Bangladesh

Iftekharuddaula, K. M.; Hassan, M. S.; Islam, Mohammad Jahidul; Badshah, MA; Islam, Mahfuzul; Akhter, Khaleda

doi:10.3923/pjbs.2001.790.792

Cited by 8 publications

(2 citation statements)

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“…Ahmadikhah (2008) noted highest heritabil-ity and genetic advance for 1000-seed weight and plant height. Similar findings were also reported by Vanniarajan et al (1996), Shivani and Reddy (200), Iftekharuddaula et al (2001) and Gannamani (2009).…”

Section: Estimation Of Genetic Parameterssupporting

confidence: 90%

Selection Effects in Rice as Assessed by Genetic Analysis in Segregating Populations

Ahmadikhah

2018

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Estimation of selection effects on changes of a trait is of vital importance for the success of any plantbreeding program, and helps to select the desirable breeding method. Heritability and genetic advance areimportant selection parameters, and selection success is a reflectance of selection response. To estimate selectioneffects on rice genetic parameters, a research was conducted using 4 different generations (two parents:Neda and Sadri, and two segregating populations: BC1F1 and BC1S1). After development of a backcross population,a single plant (BC1#4) was selected based on its desirable performance, particularly in heading date andseven other morphological traits. BC1F1 population compared to mid-parent performance showed advance forheading date, plant height, tiller number, hundred seed weight, weight of filled seeds per panicle and grainyield per plant, while mean performance of BC1F1 population compared to BC1S1 population showed advanceonly for heading date, plant height, tiller number and grain yield. Prevalence of additive genetic effects incontrolling panicle weight, hundred seed weight, weight of filled seeds per panicle, plant height and headingdate was observed, and in contrast prevalence of non-additive effects in controlling grain yield was observed.High general heritability was observed for most traits, while only heading date and plant height showeda considerable specific heritability (60.7% and 67.5%, respectively), and grain yield showed a relatively lowspecific heritability (37.0%). High expected genetic advance (ΔGe) was obtained for tiller number (49.4%),followed by grain yield (43.5%) and plant height (35.5%), while the highest real genetic advance (ΔGe) wasobtained for heading date (-8.5%) and tiller number (5.4%). High selection success was obtained only forheading date (51.8%). Altogether, the obtained results gave promise for selecting progenies with early maturityand semi-dwarfism in early segregating generations, while they suggested preference of heterosis for improvementof grain yield.

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Section: Estimation Of Genetic Parameterssupporting

confidence: 90%

Selection Effects in Rice as Assessed by Genetic Analysis in Segregating Populations

Ahmadikhah

2018

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“…Sinha et al (2004) also observed similar results and concluded that large differences reflect high environmental influence, while small differences reveal high genetic influence. Moderate to low genotypic and phenotypic coefficients of variation obtained for days to 50% flowering, days to maturity, plant height and panicle length these findings are further supported by Iftekharuddeula et al (2001). The small differences observed between genotypic and phenotypic coef-Fig.…”

Section: Methodssupporting

confidence: 55%

Genetic Variation for Grain Yield and Related Traits in Temperate Red Rice (Oryza sativa L.) Ecotypes

2013

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The present study was carried out in Kashmir (India) to assess the genetic variability for grain yield and component traits among 14 red rice ecotypes from temperate region (locally known as Zag for its coloured kernels) and correlation and path coefficients were also studied for fifteen agro-morphological characters. Genotypic and phenotypic coefficients of variation were high for grain yield, secondary branches per panicle and panicle weight; moderate for grain number per panicle, grain length:breadth (L:B) ratio and panicle density. High heritability accompanied by high to moderate genetic advance for panicle density, days to 50% flowering, plant height, grain number indicated the predominance of additive gene action for the expression of these characters. Grain yield was found to be positively and significantly correlated with number of tiller per plant, panicle density m-2 and number of grain per panicle at both genotypic and phenotypic levels indicating the importance of these characters for yield improvement in this material. The results of genotypic path analysis revealed that panicle density had the highest positive direct effect followed by plant height and days to flower. The overall results indicated that selection favouring higher panicle density, test weight and panicle weight and medium plant height with a reasonable balance for moderate grain number would help to achieve higher grain yield in this population of red rice ecotypes.

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Genetic Analysis of F1 Hybrids Derived from Aromatic (Exotic) × Aromatic (Malaysian) Rice Crosses and Their Callus Induction Performance for Haploid Production

Faruq

Zaidi

Nezhadahmadi

et al. 2014

IJST

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Genetic Evaluation and Selection Criteria of Hybrid Rice in Irrigated Ecosystem of Bangladesh

Cited by 8 publications

References 0 publications

Selection Effects in Rice as Assessed by Genetic Analysis in Segregating Populations

Selection Effects in Rice as Assessed by Genetic Analysis in Segregating Populations

Genetic Variation for Grain Yield and Related Traits in Temperate Red Rice (Oryza sativa L.) Ecotypes

Genetic Analysis of F1 Hybrids Derived from Aromatic (Exotic) × Aromatic (Malaysian) Rice Crosses and Their Callus Induction Performance for Haploid Production

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