Genetic variability, heritability and character association among yield and yield attributing traits in oats (Avena sativa L)

Chaudhary, Mayank; Singh, SK; Kumar, Mukesh; Chand, Pooran

doi:10.22271/chemi.2020.v8.i5r.10481

Cited by 3 publications

(4 citation statements)

References 8 publications

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“…Through the PCA analysis, among the seven principal factors, PF-1, PF-2 regarded as green fodder yield factors and seed yield factors. Singh et al (2018), Poonia et al (2017), Kumar et al (2006), Yadav et al (2011 and Ahmed et al (2011)also observed similar results of multivariate analysis to the present study. Biplot (Fig.…”

Section: Discussionsupporting

confidence: 88%

Delineating the Genetic Diversity in Oat Genotypes through Multivariate Analysis for Utilization in Breeding Program

Pankaj¹,

Chawla²,

Phogat³

et al. 2022

JART

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Oat (Avena sativa L.) is an important multi-purpose crop, cultivated for fodder, feed and grain purpose. Earlier oat was used for forage purpose but now with increasing health related issues as well as food security under changing climatic conditions; this crop has been emerged as sustainable dual purpose crop. Oat has emerged as a beneficial grain cereal for human consumption. Generally diverse individuals are likely to produce more heterotic effects during the crossing programme and desirable segregants are also produced. Therefore, in this present research, a total of 56 genotypes were evaluated for sixteen yield and yield contributing traits. K-means clustering and principal component analysis was done using R studio software. From clustering the genotypes were grouped in 4 cluster. Out of which cluster 1 and cluster 3 were most diverse. Highest cluster mean value for maximum traits was observed for cluster 3 as well. Principal component analysis showed that PF-1 and PF-2 was regarded as most important for yield factors. It was seen that PF-1 was loaded on seed yield, axis length and days to 50% flowering while PF-2 on green fodder yield, dry matter yield and plant height. Biplot depicted that variation in traits dry matter yield, green fodder yield, days to 50% flowering, seed yield and plant height was contributed by both principal component. Genotypes selected from diverse clusters can be incorporated in hybridization crop improvement programme.

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Section: Discussionsupporting

confidence: 88%

Delineating the Genetic Diversity in Oat Genotypes through Multivariate Analysis for Utilization in Breeding Program

Pankaj¹,

Chawla²,

Phogat³

et al. 2022

JART

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“…Several studies on heritability of oat traits have been published, with heading days, plant height at maturity, and thousand hulled grain weight, being the most commonly traits investigated ( Sürek and Valentine, 1996 ; Yan et al., 2016 ; Kumari et al., 2017 ; Premkumar et al., 2017 ; Chauhan and Singh, 2019 ; Leišová-Svobodová et al., 2019 ; Mazurkievicz et al., 2019 ; Meira et al., 2019 ; Haikka et al., 2020 ; Vanjare et al., 2021 ; Brzozowski et al., 2022 ). However, heritability cannot be generalized to a crop since it is highly specific, and valid only for the material involved in the experiment and the experimental environment ( Majhi, 2020 ).…”

Section: Discussionmentioning

confidence: 99%

“…Understanding the genetic diversity of the breeding germplasm, in combination with the phenotypic variation, correlation and heritability of important traits under selection, has facilitated the design of more effective breeding programs ( Nava et al., 2010 ; Krishna et al., 2013 ; Boczkowska et al., 2016 ; Winkler et al., 2016 ; Silveira et al., 2020 ; Cieplak et al., 2021 ). There is published research on this aspect in Sweden, Denmark, Finland, Norway ( Nersting et al., 2006 ), USA ( Winkler et al., 2016 ), India ( Chauhan and Singh, 2019 ), and Brazil ( Mazurkievicz et al., 2019 ; Meira et al., 2019 ; Zimmer et al., 2019 ; Silveira et al., 2020 ), but not under the environmental conditions of southern Chile. Few Chilean oat genotypes have been included in genetic diversity studies ( Achleitner et al., 2008 ), which do not include the newest breeding lines and those most cultivated in Chile.…”

Section: Introductionmentioning

confidence: 99%

Phenotypic and genetic characterization of an Avena sativa L. germplasm collection of diverse origin: implications for food-oat breeding in Chile

Mathias-Ramwell,

Pavez,

Meneses

et al. 2023

Front. Plant Sci.

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Oats are known for their nutritional value and also for their beneficial properties on human health, such as the reduction of cholesterol levels and risk of coronary heart disease; they are an important export product for Chile. During the last decade (2010-2022) over 90% of the oat cultivated area in Chile has been covered with Avena sativa L. cv. Supernova INIA. This lack of genetic diversity in a context of climate change could limit the long-term possibility of growing oats in Chile. The present study is a phenotypic and genetic analysis of 132 oat cultivars and pure lines of diverse origin that can be considered as potential breeding material. The germplasm was evaluated for 28 traits and analyzed with 14 SSR markers. The effects of genotypes on phenotype were significant over all traits (P ≤ 0.05). Most traits exhibited moderate to high broad-sense heritability with exceptions such as yield (H2 = 0.27) and hulls staining (H2 = 0.32). Significant undesirable correlations between traits were generally of small biological importance, which is auspicious for achieving breeding objectives. Some of the heritability data and correlations provided here have not been previously reported. The overall phenotypic diversity was high (H’ = 0.68 ± 0.18). The germplasm was grouped into three phenotypic clusters, differing in their qualities for breeding. Twenty-six genotypes outperforming Supernova INIA were identified for breeding of conventional food-oats. The genetic diversity of the germplasm was moderate on average (He = 0.58 ± 0.03), varying between 0.32 (AM22) and 0.77 (AME178). Two genetic subpopulations supported by the Structure algorithm exhibited a genetic distance of 0.24, showing low divergence of the germplasm. The diversity and phenotypic values found in this collection of oat genotypes are promising with respect to obtaining genetic gain in the short term in breeding programs. However, the similar genetic diversity, higher phenotypic diversity, and better phenotypic performance of the germplasm created in Chile compared to foreign germplasm suggest that germplasm harboring new genetic diversity will be key to favor yield and quality in new oat cultivars in the long term.

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“…Several studies on heritability of oat traits have been published, with heading days, plant height at maturity, and thousand hulled grain weight, being the most commonly traits investigated (Sürek and Valentine, 1996;Yan et al, 2016;Kumari et al, 2017;Premkumar et al, 2017;Chauhan and Singh, 2019;Leisǒva-Svobodováet al, 2019;Mazurkievicz et al, 2019;Meira et al, 2019;Haikka et al, 2020;Vanjare et al, 2021;Brzozowski et al, 2022). However, heritability cannot be generalized to a crop since it is highly specific, and valid only for the material involved in the experiment and the experimental environment (Majhi, 2020).…”

Section: Phenotypic Variation and Heritability Of The Traitsmentioning

confidence: 99%

Plant Genotyping: From Traditional Markers to Modern Technologies

2024

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Genetic variability, heritability and character association among yield and yield attributing traits in oats (Avena sativa L)

Cited by 3 publications

References 8 publications

Delineating the Genetic Diversity in Oat Genotypes through Multivariate Analysis for Utilization in Breeding Program

Delineating the Genetic Diversity in Oat Genotypes through Multivariate Analysis for Utilization in Breeding Program

Phenotypic and genetic characterization of an Avena sativa L. germplasm collection of diverse origin: implications for food-oat breeding in Chile

Plant Genotyping: From Traditional Markers to Modern Technologies

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