Publication Date
1993
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" (2024). IGC Proceedings (1989-2023). 24.
https://uknowledge.uky.edu/igc/1993/session12/24
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
Divergent Selection for Forage Yield Components in Switchgrass
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.
