Genetic Divergence and Variability Studies for Yield and Quality Traits in Elite Rice (Oryza sativa L.) Genotypes

Devi, K. Rukmini; Chandra, B. Satish; Hari, Yosuke; Prasad, K. Rajendra; Lingaiah, N.; Rao, P. Jagan Mohan

doi:10.9734/cjast/2020/v39i1830769

Cited by 10 publications

(17 citation statements)

References 10 publications

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“…Therefore the ninety one (91) genotypes categorized into ten (10) clusters is an indication of presence of high amount of genetic diversity in the germplasm. Here clustering was not based on any specific pattern of the crop with respect to origin, similar observation was also recorded in previous reports on rice (Mohanty et al, 2010; Devi et al, 2020) [8,10] . In the present study a considerable amount of genetic diversity was found among the germplasm lines which suggested that these diverse lines may serve as good source for selecting parents in hybridization programmes with an object to identify desirable segregants with respect to grain yield and other yield related traits.…”

Section: Genetic Divergence Analysissupporting

confidence: 89%

“…In the present study a considerable amount of genetic diversity was found among the germplasm lines which suggested that these diverse lines may serve as good source for selecting parents in hybridization programmes with an object to identify desirable segregants with respect to grain yield and other yield related traits. Similar study was conducted to isolate desirable segregants (Chandramohan et al, 2016; Devi et al, 2019) [2,10] . Reports (Murthy and Arunachalam., 1966; Devi et al, 2020) [7,10] has found out that as compare with geographic distance, genetic drift and selection in environment leads to more diversity.…”

Section: Genetic Divergence Analysismentioning

confidence: 91%

“…Similar study was conducted to isolate desirable segregants (Chandramohan et al, 2016; Devi et al, 2019) [2,10] . Reports (Murthy and Arunachalam., 1966; Devi et al, 2020) [7,10] has found out that as compare with geographic distance, genetic drift and selection in environment leads to more diversity. Genetic diversity plays a crucial role by producing distant hybrids and more recombinants.…”

Section: Genetic Divergence Analysismentioning

confidence: 91%

“…Rice (Oryza sativa L.) is one of the most staple food crops which belong to family poaceae (Graminae) with an annual production of 759.6 million tonnes (FAOSTAT, 2018) [4] . It is grown in more than 114 countries occupying wide range of ecosystems under different temperatures and water regimes (Rukmini Devi et al, 2020) [10] . The world rice production for the year 2019-20 was estimated as 496.67 million metric tons (USDA, 2020) [13] .…”

Section: Introductionmentioning

confidence: 99%

“…For the development of varieties the parents should be divergent in nature and for that germplasm provides an immense opportunity for wide range of variability (Zafer et al, 2020) [14] . The nature and magnitude of genetic divergence and variability would help plant breeders to identify better parents in hybridization programmes with an object to get higher amount of heterotic value in F 1 and wide variability in segregating generations (Rukmini Devi et al, 2020) [10] . After acknowledging the importance of variability and genetic diversity in plant breeding programme, the present study was conducted with an aim to understand the nature and magnitude of genetic diversity and also to identify better accessions with regards to various yield contributing traits in rice under sodic soil condition.…”

Section: Introductionmentioning

confidence: 99%

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Genetic divergence analysis in rice (Oryza sativa L.) under sodic soil condition

Singh¹,

Verma²,

Singh³

et al. 2020

Pharma Innovation

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Genetic divergence and variability was assessed among eighty eight (88) diverse rice genotypes including three checks (Narendra Usar Dhan 3, Jaya and CSR-36) which were evaluated in augmented deign under sodic soil using non-hierarchical Euclidean cluster analysis. The genotypes were grouped into ten clusters which indicate presence of high degree of genetic diversity in germplasm collections. Among the different clusters, cluster V with eighteen (18) entries got the highest number of genotypes followed by thirteen (13) entries in both cluster I and II. Although the least number of genotypes was observed in Cluster X but the highest intra-cluster distance was identified in cluster X (25.00), followed by cluster VIII (14.62) and VII (13.76). In case of inter-cluster distance maximum value was found between cluster X and III (46.19). So the genotypes present in the diverse clusters may serve as parental materials for hybridization programme which will leads to isolation of desirable segregants for developing high yielding rice varieties in sodic soil.

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Section: Genetic Divergence Analysissupporting

confidence: 89%

Section: Genetic Divergence Analysismentioning

confidence: 91%

Section: Genetic Divergence Analysismentioning

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Genetic divergence analysis in rice (Oryza sativa L.) under sodic soil condition

Singh¹,

Verma²,

Singh³

et al. 2020

Pharma Innovation

View full text Add to dashboard Cite

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Genetic analysis of zinc rich landraces for yield, quality and nutritional traits in rice (Oryza sativa L.)

Ratnam,

Kumar,

Subba Rao

et al. 2023

JEB

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Aim: To study genetic variability, correlation, path and Principal Component Analysis (PCA) in a set of 100 zinc rich rice landraces along with four checks. Methodology: The study was carried out at the Regional Agricultural Research Station (RARS), Maruteru, during Rabi season, 2020-2021 in an Augmented Randomized Block Design. Results: Grain yield per plant, grains per panicle, productive tillers m-2 and test weight showed moderate genotypic coefficient of variation (GCV) and phenotypic coefficient of variation (PCV) coupled with high heritability and genetic advance as per cent mean. These traits also had positive and significant association coupled with high positive direct effect on grain yield per plant. They also contributed maximum variance to the total variability indicating the effectiveness of direct phenotypic selection for these traits for improving the grain yield per plant. Further, cluster analysis grouped the zinc rich rice landraces along with checks into three clusters. Cluster II had the highest genotypes (42), while Cluster I had 32 genotypes and Cluster III consisted of 30 zinc rich landraces along with three check varieties. Interpretation: Grains per panicle, productive tillers and test weight were identified as effective selection criteria for the improvement of grain yield towards development of high yielding zinc-rich rice varieties to curtail micronutrient malnutrition in areas with rice as staple food. Key words: Cluster analysis, Landraces, Oryza sativa, Path analysis, PCA, Zinc

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Genetic Parameters and Divergence Studies for Gall Midge Incidence and Yield Components in Rice (Oryza sativa L.)

Chandra¹,

Devi²,

Hari³

et al. 2022

IJBSM

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The present investigation was carried out with 30 genotypes of rice (Oryza sativa L.) to study the variability and genetic divergence for yield contributing characters and gall midge incidence at Regional Agricultural Research Station, Warangal, Telangana during kharif, 2021 (July–November) in RBD replicated twice for eight quantitative traits. The phenotypic coefficient of variation (PCV) was slightly higher than the genotypic coefficient of variation (GCV) for all traits, indicating that environmental influences affect the expression of these traits. High heritability coupled with high genetic advance as % of the mean values were observed for 1000 grain weight and number of grains panicle-1 suggesting that selection for the improvement of these traits may be rewarding. The PCA analysis showed that first three principal components accounted for about 91.57%. Based on D2 studies, 30 genotypes were grouped into seven clusters with the cluster I (13) containing maximum number of genotypes followed by cluster III (9) and cluster II (4). Highest inter cluster distances were observed between the clusters IV and VII (1272.49) followed by IV and V (1097.39), VI and VII (1013.83) and II and VII (944.20) indicating the importance of the genotypes present in these clusters for exploiting heterosis for the desirable traits of these clusters. Days to 50% flowering (27.58%),1000-grain weight (27.36%) and plant height (27.36%) were found to be the most contributing traits towards total genetic diversity, which could be given due importance by the breeders for development of superior rice genotypes under crop improvement programme.

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Genetic Divergence and Variability Studies for Yield and Quality Traits in Elite Rice (Oryza sativa L.) Genotypes

Cited by 10 publications

References 10 publications

Genetic divergence analysis in rice (Oryza sativa L.) under sodic soil condition

Genetic divergence analysis in rice (Oryza sativa L.) under sodic soil condition

Genetic analysis of zinc rich landraces for yield, quality and nutritional traits in rice (Oryza sativa L.)

Genetic Parameters and Divergence Studies for Gall Midge Incidence and Yield Components in Rice (Oryza sativa L.)

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