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Publication Date
1993
Location
New Zealand
Description
The objective of this study was to evaluate half-sib families of 30 plants each of Summer and Sunburst switchgrass (Panicum virgatum L.) from a divergent selection for forage yield components programme. Highly significant differences were found among families within each cullivar for blade weight, stem weight, sheath weight and blade-to-stem ratio (BSR) at anthesis. The family x year interaction was significant only for BSR for Summer. Highly significant differences were found nmong families from "high" and "low" parents for each of the 4 traits. Genetic variances were higher for Summer than Sunburst for 3 of the 4 traits. Phenotypic selection should be effective for modifying morphological traits related to forage quality in these 2 cultivars.
Citation
Bortnem, R; Boe, A; and Kephart, K D., "Divergent Selection for Forage Yield Components in Switchgrass" (1993). IGC Proceedings (1985-2023). 24.
(URL: https://uknowledge.uky.edu/igc/1993/session12/24)
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Divergent Selection for Forage Yield Components in Switchgrass
New Zealand
The objective of this study was to evaluate half-sib families of 30 plants each of Summer and Sunburst switchgrass (Panicum virgatum L.) from a divergent selection for forage yield components programme. Highly significant differences were found among families within each cullivar for blade weight, stem weight, sheath weight and blade-to-stem ratio (BSR) at anthesis. The family x year interaction was significant only for BSR for Summer. Highly significant differences were found nmong families from "high" and "low" parents for each of the 4 traits. Genetic variances were higher for Summer than Sunburst for 3 of the 4 traits. Phenotypic selection should be effective for modifying morphological traits related to forage quality in these 2 cultivars.
