Summary
The objective of this study was to evaluate traits which can facilitate and improve selection for grain yield of spring barley. Five experiments were conducted in different environments to measure grain yield and yield related traits of breeding lines and exotic varieties. Differences for rate of canopy expansion were significant and offer the opportunity to select for a high weed suppressing potential but there was no relation to grain yield. Dry matter yield/m2 at anthesis and its water-soluble-carbohydrate content were not correlated with grain yield/m2 and number of grains/m2. Variation in biomass among breeding lines with a similar development and plant height was small. Biomass standardized for plant height was stable across environments and showed a good correlation with number of grains and grain yield. The contribution of pre-anthesis assimilation to grain yield was only important under low yielding experimental conditions, but the differences among the genotypes for this trait were inconsistent. It may be difficult to select genotypes with a high potential contribution of pre-anthesis assimilation to grain yield.
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Balkema-Boomstra, A.G. The relation between grain yield and some related traits of spring barley (Hordeum vulgare L.) and their usefulness in a breeding program. Euphytica 65, 99–106 (1992). https://doi.org/10.1007/BF00022571
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DOI: https://doi.org/10.1007/BF00022571