Variance components and heritability of biomass yield in switchgrass (Panicum virgatum L.) grown in the Southern Great Plains

Jiang, Qingzhen; Webb, Stephen L.; Yesudas, Charles R.; Bhandari, Hem S.; Narasimhamoorthy, B.; Bouton, Joseph H.; Saha, Malay C.

doi:10.1016/j.fcr.2014.07.016

Cited by 9 publications

(17 citation statements)

References 34 publications

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“…Switchgrass (Panicum virgatum) can be used for forage, landscape conservation, as a potential bio-energy crop to generate power by combustion, and to produce ethanol or biodiesel by pyrolysis (Jiang et al 2014). It is resistant to salt and alkali and drought, and it can grow in saline soil and regions that are arid and semiarid.…”

Section: Introductionmentioning

confidence: 99%

Characteristics and Potential Values of Bio-Products Derived from Switchgrass Grown in a Saline Soil Using a Fixed-Bed Slow Pyrolysis System

et al. 2017

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Section: Introductionmentioning

confidence: 99%

Characteristics and Potential Values of Bio-Products Derived from Switchgrass Grown in a Saline Soil Using a Fixed-Bed Slow Pyrolysis System

et al. 2017

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“…The three traits of interest were regrowth date, heading date, and growth period. Details on the data analysis can be obtained from Jiang et al., .…”

Section: Methodsmentioning

confidence: 99%

“…Broad‐sense heritability estimates were carried out following the method described in Jiang et al. (). Estimated heritability values close to 0 indicated strong environmental (i.e., year in the current study) influence, whereas values near 1 showed a strong genetic control (Lynch & Walsh, ).…”

Section: Methodsmentioning

confidence: 99%

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Ecotypic and genotypic effects on regrowth and heading date in switchgrass (Panicum virgatum)

et al. 2019

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Switchgrass ( Panicum virgatum L.) is a native perennial grass species with great potential for bioenergy and forage. However, knowledge about its genetics and biology related to breeding is still in its infancy. Studying the diversity of switchgrass germplasm will shed light on variability, response to environmental conditions, adaptability, breeding, etc. Thirty‐six switchgrass accessions/cultivars were used to study the ecotypic and genotypic effects on regrowth, heading date, and vegetative growth period. The R‐360 honeycomb design was used for planting these accessions in 2007. Data on regrowth and heading dates were recorded in 2008, 2010, and 2011. Vegetative growth period was calculated by subtracting the regrowth date from the heading date. It was found that the lowland started regrowing earlier (77 ± 0.4 days of the year, DOY ) than the upland ecotype (82 ± 0.3 DOY ). The upland had earlier heading date (160 ± 0.4 DOY ) than the lowland ecotype (173 ± 0.5 DOY ). Vegetative growth period was about 18 days longer in the lowland (89 ± 0.6 days) than the upland ecotype (71 ± 0.4 days). For switchgrass (i.e., all accessions), biomass yield was related positively to growth period and heading date; however, biomass was only weakly related to regrowth. Therefore, when targeting biomass in the breeding program, growth period may be a quick and reliable reference in both ecotypes to quickly estimate biomass potential while regrowth and heading date may be better used as a parameter for accessions within an ecotype.

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“…A wide range of narrow‐sense heritability estimates were reported for lowland switchgrass ( Panicum virgatum L.) half‐sib families for dry matter yield (0.13), stem thickness (0.21), plant height (0.26), tillering (0.27), and heading date (0.67) (Bhandari et al, 2010). Although biomass yield over 3 yr in lowland and upland switchgrass exhibited H 2 of 0.50 (Jiang et al, 2014).…”

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Genetic Parameters for Phenotypic Traits in Annual Ryegrass

Rios

Kenworthy

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et al. 2019

Crop Science

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Characterizing phenotypes in germplasm collections and making data publicly available is crucial to ensure the utilization of the accessions in breeding programs. Variance component estimates are used to calculate genetic parameters needed to make strategic decisions for germplasm conservation and its utilization in plant breeding. This information is lacking for annual ryegrass (Lolium multiflorum Lamarck) germplasm from the USDA National Plant Germplasm System (NPGS). In this study, we estimated variance components, repeatability, genotypic values, genetic correlations, and genotype × year correlations for 18 traits in 167 annual ryegrass populations. Repeatability (H2) ranged from 0.11 to 0.93 for single‐year analyses, and from 0.03 to 0.86 for traits evaluated during two growing seasons, evidencing the presence of genetic variability. Genotype × year correlations ranged from 0.17 up to 0.99, demonstrating variable consistency in phenotypic performance across years. Combining multiple traits in one cultivar is a challenge for breeders, particularly for traits negatively correlated. Establishment, plant vigor, leaf width and length, and chlorophyll content were negatively correlated with disease traits. Heading date was positively correlated with number of tillers, crown size, and biomass production. High positive correlations were also found between biomass and plant height, crown size, tiller number and size, and leaf/stem ratio. The data presented in this study will become publicly available via the Germplasm Resource Information Network (GRIN)‐Global database of the NPGS.

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Variance components and heritability of biomass yield in switchgrass (Panicum virgatum L.) grown in the Southern Great Plains

Cited by 9 publications

References 34 publications

Characteristics and Potential Values of Bio-Products Derived from Switchgrass Grown in a Saline Soil Using a Fixed-Bed Slow Pyrolysis System

Characteristics and Potential Values of Bio-Products Derived from Switchgrass Grown in a Saline Soil Using a Fixed-Bed Slow Pyrolysis System

Ecotypic and genotypic effects on regrowth and heading date in switchgrass (Panicum virgatum)

Genetic Parameters for Phenotypic Traits in Annual Ryegrass

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