2008
DOI: 10.2135/cropsci2007.08.0482
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Abstract: Development of switchgrass (Panicum virgatum L.) as a dedicated biomass crop for conversion to energy requires substantial increases in biomass yield. Most efforts to breed for increased biomass yield are based on some form of indirect selection. The objective of this paper is to evaluate and compare the expected efficiency of several indirect measures of breeding value for improving sward-plot biomass yield of switchgrass. Sward-plot biomass yield, row-plot biomass, and spaced-plant biomass were measured on 1… Show more

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Cited by 69 publications
(66 citation statements)
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References 27 publications
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“…Biomass production was greater in earlier maturing, northern-adapted cultivars such as Dacotah and ND 3743. As others have stated, biomass production is correlated with a larger proportion reproductive tillers that have large and numerous phytomers [22,26]. In the present study, southern-adapted cultivars tended to remain vegetative in the two study sites due to the shorter growing season.…”
Section: Swift Currentsupporting
confidence: 66%
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“…Biomass production was greater in earlier maturing, northern-adapted cultivars such as Dacotah and ND 3743. As others have stated, biomass production is correlated with a larger proportion reproductive tillers that have large and numerous phytomers [22,26]. In the present study, southern-adapted cultivars tended to remain vegetative in the two study sites due to the shorter growing season.…”
Section: Swift Currentsupporting
confidence: 66%
“…Highyielding cultivars in Wisconsin and South Dakota, such as Cave-in-Rock, had larger tillers with more and larger phytomers than early maturing and lower yielding cultivars, such as Dacotah. Biomass production differences between sites are attributed to variation in reproductive tiller density because reproductive tiller mass was five times greater than that of vegetative tillers [26]. Although these variables were not determined in the current study, we observed that southern-adapted cultivars neither maintained tiller density over time (lack of persistence discussed above) nor developed the height reported for this species in the mid-west USA locations.…”
Section: Biomass Productionmentioning
confidence: 51%
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“…2 Breeding for increased tiller density, phytomer number per tiller, and phytomer mass may provide opportunities for increasing yield, especially in lowland ecotypes. 61 Genetics and breeding eff orts to increase both biomass yield and biorefi nery conversion potential will result in cultivars and hybrids with signifi cantly increased liquid fuels yield potential per land area. Improved management practices should enable farmers to profi tably optimize the bioenergy yield potential of the improved plant materials.…”
Section: Opportunitiesmentioning
confidence: 99%
“…Branch patterns vary widely within and between species; they contribute to the diversity of plant life forms and their ability to populate different ecological niches (Bonser and Aarssen, 2003). Plant architecture and, hence, the branching pattern is also an important attribute to modern crop species; changing the branching habit can help to optimize the use of resources for enhanced growth, biomass accumulation, and seed or fruit yield (García del Moral and García del Moral, 1995;Zhao et al, 2006;Doust, 2007;Boe and Beck, 2008).…”
mentioning
confidence: 99%