GENETIC VARIABILITY AND CHARACTER ASSOCIATION FOR AGRONOMIC TRAITS IN HYBRID RICE (Oryza Sativa L.)

Hasan, MJ; Kulsum, MU; Akter, A; Masuduzzaman, Asm; Ramesha, M. S.

doi:10.3329/bjpbg.v24i1.16999

Cited by 32 publications

(31 citation statements)

References 7 publications

(6 reference statements)

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“…The results suggest that negative correlations with filled grains leads to lower yield which means early maturing varieties produced lower yields. These results are in accordance with the results of Hasan et al, (2013), who found days to 50% flowering was negatively correlated with yield.…”

Section: Resultssupporting

confidence: 83%

Genetic Variability, Correlation and Leaf Blast Resistance Studies in Early Maturing Rice Genotypes under Hilly Conditions

Hosagoudar¹,

Kovi²,

Sheela³

2017

Int.J.Curr.Microbiol.App.Sci

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Section: Resultssupporting

confidence: 83%

Genetic Variability, Correlation and Leaf Blast Resistance Studies in Early Maturing Rice Genotypes under Hilly Conditions

Hosagoudar¹,

Kovi²,

Sheela³

2017

Int.J.Curr.Microbiol.App.Sci

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“…Table 3 Chakravorty and Ghosh (2014) recently found the direct positive effect of grain length on panicle yield. Hasan et al,(2013) found the direct positive effect of fertility % of spikelets on primary branches panicle -1 on grain yield. Negative direct effects on panicle yield were exhibited by grain breadth (-0.924) and grain length/breadth ratio (-0.753).…”

Section: Resultsmentioning

confidence: 99%

Interrelationship and cause effect analysis among panicle yield attributing traits in lowland Traditional Rice

Chakravorty¹,

Ghosh²

2014

JCEA

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Yield component analysis provides a framework for identifying potentially useful traits for yield improvement. A field experiment was conducted for two consecutive years to evaluate the forty four low land traditional rice cultivars for twenty three panicle yield and its attributing traits during kharif season at the Zonal Adaptive Research Station, Krishnagar, Nadia, West Bengal, India. Significant varietal differences were observed for all the characters. Among the panicle yield attributing traits, number of primary branches per panicle, number of grains on primary branches panicle -1 , number of spikelets on primary branches panicle -1 , grain length, grain breadth, grain thickness, kernel breadth, kernel thickness, 100 grain weight, 100 kernel weight correlated significantly and positively with panicle yield both at the genotypic and phenotypic levels. Results of path analysis showed that the direct positive effect on panicle yield was greatest for number of spikelets on secondary branches panicle -1 (0.998) which is followed by number of grains on secondary branches panicle -1 (0.948), grain length (0.755), and number of spikelets on primary branches panicle -1 (0.625), grain thickness (0.392) and fertility % of spikelets on primary branches panicle -1 (0.378). Few characters like number of primary branches panicle , by number of grains on primary branches panicle -1 and grain breadth showed negative direct effect on panicle yield even though the genotypic correlation coefficients on panicle yield were positive. The study revealed that the direct selection of the above said traits might be rewarding for panicle yield improvement since they revealed a true relationship with the panicle yield.

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“…Whereas the control had a mean grain weight of 2.89 g, superior mutant families presented a mean value of 4.40 g. This result observed in these mutants can be related to a greater yield, since the grain mass is a major component of yield (Jeng et al 2006;Song et al 2007;Hasan et al 2013;Karim et al 2014). It is worth emphasizing that this increase in the main panicle grain weight will be relevant provided that there is no reduction in other components of grain yield.…”

Section: Vk Luz Et Almentioning

confidence: 92%

Identification of variability for agronomically important traits in rice mutant families

et al. 2016

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AbstrAct:The increase of yield potential in new rice (Oryza sativa L.) varieties has been a major challenge for genetic improvement.The generation of mutants, followed by their characterization, constitutes a great possibility to isolate and select genes and genotypes that present agronomic traits of interest. This study significance. The results show that there is genetic variability among the mutant families, suggesting that the mutagen EMS at 1.5% is effective for generating mutants for all assessed traits. Among the characters, plant height was the most affected by the mutagen, which provided an increase in the character. For the main panicle length character, seven families showed means above the control; for main panicle weight and grain weight, four and six mutant families were observed, respectively, with a superior performance in comparison to the control.

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GENETIC VARIABILITY AND CHARACTER ASSOCIATION FOR AGRONOMIC TRAITS IN HYBRID RICE (Oryza Sativa L.)

Cited by 32 publications

References 7 publications

Genetic Variability, Correlation and Leaf Blast Resistance Studies in Early Maturing Rice Genotypes under Hilly Conditions

Genetic Variability, Correlation and Leaf Blast Resistance Studies in Early Maturing Rice Genotypes under Hilly Conditions

Interrelationship and cause effect analysis among panicle yield attributing traits in lowland Traditional Rice

Identification of variability for agronomically important traits in rice mutant families

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