Genetic Variability Analysis for Quantitative Traits in Rice (Oryza sativa L.)

Manjunatha, B.; Kumara, B. Niranjana

doi:10.9734/jeai/2019/42305

Cited by 3 publications

(4 citation statements)

References 3 publications

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“…PCV and GCV were high for the traits viz., the number of panicles per square meter (10.01 %, 9.45 %), grain yield per plot and grain yield per hectare (9.24 %, 8.39 %), the plant height (6.97 %, 5.68 %), the days to 50% flowering (6.64 %, 6.46 %) and days to maturity (5.31% and 5.17%) (Table 2). The results found in this study are corroborated with the findings of Manjunath et al, Fathima et [11,12,13,14] for plant height and the panicles per square meter as well as days to maturity. For the grain yield per plot and grain yield per hectare in rice by Manjunatha B et al and Singh et al [15,16].…”

Section: Resultssupporting

confidence: 92%

Genetic Attributes for Selection and Assessment of Yield Enhancement in Paddy (Oryza sativa L.)

Manjunatha B,

Niranjana Kumara B

2024

IJPSS

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The present investigation was conducted in the Agricultural and Horticultural Research Station, Kathalagere. The experiment comprised sixty-seven advanced breeding lines of paddy. The experiment was conducted in three replications with 4mx3m of plot size. The observations are recorded on days to fifty per cent flowering, Days to maturity, Plant Height(cm), Panicles per sqm, Grain yield per plot(kg) and Grain yield per hectare (Kg). The data is subjected to analysis for genetic variability and diversity parameters (Key factors of plant breeding). Higher Genetic coefficient of variability (GCV) and Phenotypic coefficient of variability (PCV) are Days to fifty per cent flowering, Days to maturity, Plant height(cm), Panicles per square meter and grain yield per plot (Kgs) should be considered at the time of selecting the genotypes/varieties/breeding lines for progressing and prospering in the yield and yield contribution towards the varietal performance. Genetic diversity studies proved that the traits viz., days to 50 per cent flowering, Days to maturity, Panicles per square meter, Plant height and Grain yield per plot are prompt traits that contributed maximum divergence to the genotypes. Some clusters are composed of superior genotypes that may contribute to the several crossing studies to improve through transgressive segregants with high genetic yield potential and early maturity.

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Section: Resultssupporting

confidence: 92%

Genetic Attributes for Selection and Assessment of Yield Enhancement in Paddy (Oryza sativa L.)

Manjunatha B,

Niranjana Kumara B

2024

IJPSS

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“…Padmaja et al, (2008) also reported high genetic advance for test weight, days to maturity, panicle weight, seeds per panicle, plant height, panicles per plant, flag leaf width, tillers per plant and flag leaf length. Manjunatha and Kumara (2019) also reported the high genetic advance for days number to 50 per cent flowering.…”

Section: Resultsmentioning

confidence: 93%

“…High heritability for test weight, days to maturity, panicle weight, seeds per panicle, plant height, panicles per plant, flag leaf width, tillers per plant, flag leaf length was also reported by Padmaja et al, (2008). Manjunatha and Kumara (2019) have also reported high heritability for day's number to 50 per cent flowering. Pal and Sabesan (2010) have also reported high heritability for internodal length, culm diameter, culm wall thickness and lodging per cent.…”

Section: Resultsmentioning

confidence: 98%

Genetic variability, heritability and genetic advance of yield and lodging-related traits in rice (Oryza sativa L.)

Biju

2020

EJPB

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This study was conducted to determine the PCV and GCV, heritability (bs) and genetic gain in lodging resistance and lodging-related traits among selected high yielding rice varieties of Kerala. Results revealed the presence of large genotypic differences in yield, lodging and related traits and difference between PCV and GCV among all the selected genotypes. Both PCV and GCV were highest for seed yield per plant followed by panicle weight and tillers plant -1 . Heritability was high and ranged from (99.81 %) potassium content to (91.43 %) panicle weight. The genetic advance as per cent of mean estimates was high for all the traits and highest for lodging per cent (84.83 %). The high estimates of genetic advance indicating that, the selection for characters viz., internodal length, culm wall thickness, lodging perc ent, seed yield per plant, silicon and potassium content will be effective for further improving overall lodging resistance.

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“…Early transplanting is the cultural practice aimed at exploiting favorable environmental conditions, which have the potential for resource utilization and significant improvement in yield [4]. However, the effectiveness of early transplanted rice highly depends on the genetic composition of the varieties, as different varieties respond differently in various environments [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Genetic Variability, Correlation and Path Analysis Studies in Early Transplanted Rice

Kalpande,

Meshram,

Borkar

2024

Int. J. Plant Soil Sci.

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Aims: The aim of this study was to evaluate the genetic variation, heritability, and direct and indirect effects of various traits on grain yield in 64 rice genotypes under early transplanted conditions. Study Design: The study utilized a randomized block design with two replications. Place and Duration of Study: The research was conducted at the Agriculture Research Station, Sakoli, District. Bhandara under Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola, Maharashtra, India during the Kharif season of 2022. Methodology: The experimental material comprised 64 rice genotypes along with the regional check Sakoli-6. Observations were recorded on the following traits: days to 50% flowering, days to maturity, plant height (cm), number of panicles per square meter (panicles/m²), and grain yield (kg/ha). Data were analyzed for genetic coefficient of variation (GCV), phenotypic coefficient of variation (PCV), heritability, genetic advance, correlation, and path analysis to determine the direct and indirect effects of these traits on grain yield in early transplanted condition. Results: High GCV and PCV were observed for grain yield, with moderate values for the number of panicles/m², indicating significant variability conducive to improvement. Grain yield, number of panicles/m², and plant height exhibited high heritability and genetic advance. Whereas, correlation analysis showed significant positive correlations between the number of panicles/m² and grain yield, and significant negative correlations between days to 50% flowering and days to maturity with grain yield. Path analysis indicated that days to 50% flowering, followed by the number of panicles/m² and plant height, had the highest positive direct effects on grain yield. Conclusion: The study identified the number of panicles/m² as a critical trait for selecting superior genotypes. Based on these findings, the rice genotypes RP 6496-JB 202-4-6-1-1-1-1, OR 2800-4, and KNM 13557 were recommended for further breeding programs under early transplanted conditions.

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Genetic Variability Analysis for Quantitative Traits in Rice (Oryza sativa L.)

Cited by 3 publications

References 3 publications

Genetic Attributes for Selection and Assessment of Yield Enhancement in Paddy (Oryza sativa L.)

Genetic Attributes for Selection and Assessment of Yield Enhancement in Paddy (Oryza sativa L.)

Genetic variability, heritability and genetic advance of yield and lodging-related traits in rice (Oryza sativa L.)

Genetic Variability, Correlation and Path Analysis Studies in Early Transplanted Rice

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