Root Yield and Quality of SugarbeetHybrids with Pollinators Selected for Sodium, Potassium, or Amino-nitrogen Concentration

摘要

Sodium, potassium, and amino-nitrogen, referred to as impurities, are constituents of sugarbeet that impede sucrose extraction. Lines selected for low or high concentration of a single impurity component were crossed with a common female line to determine their impact on the sodium, potassium, amino-nitrogen, sucrose, recoverable sucrose, and invert sugar concentration and root yield in the resulting hybrids. The relatively low sodium and potassium concentration of hybrids with low-sodium and low-potassium pollinators, respectively, indicated that pollinators with relatively low sodium or potassium concentration can substantially reduce the sodium or potassium concentration of a hybrid. Roots of hybrids with pollinators selected for high amino-nitrogen concentration had higher amino-nitrogen concentrations than hybrids with their unselected parental populations as pollinators. However, the difference between the reduced amino-nitrogen concentration observed for hybrids with pollinators selected forlow amino-nitrogen concentration and the amino-nitrogen concentration of hybrids with the unselected parental population as a pollinator was not significant. In general, altering one of the impurity components resulted in only small changes in root yield, sucrose concentration, or loss-to-molasses. Selection for a combination of impurity components, sucrose concentration, and root yield traits and multi-environment evaluations will be required to improve the value and productivity of the crop.