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Environment Influence on Grain Quality of White Sorghum. J. Griess, S. Mason, D. Jackson and R. Elmore. University of Nebraska, Lincoln, NE 68583-0915. Introduction. Table 1. Environment effects on yield and grain quality.
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Environment Influence on Grain Quality of White Sorghum J. Griess, S. Mason, D. Jackson and R. Elmore University of Nebraska, Lincoln, NE 68583-0915 Introduction Table 1. Environment effects on yield and grain quality Table 2. Hybrid effects on yield and grain quality Other Results • Past food quality sorghum – white grain and tan plant • Limited evaluation of grain quality done • Sorghum is important crop in the Great Plains • Specialty markets exist for food-grade sorghum grain • E X H interaction effects were present for all parameters, but variation was less than 10% of the total • Kernel weight ranged from 1.92 to 5.50 across environments • Bulk and true density had results similar to TADD with a range of 47 to 63 and 1.178 to 1.376 across environments • Yield was positively correlated with kernel weight, hard kernels and high % starch • Kernel hardness was positively correlated with % starch Objectives • Determine the adaptation of food-grade sorghum hybrids to Nebraska production environments • Determine the effect of environment on the grain quality of 12 food grade commercial hybrids as compared to non-food grade check hybrids Conclusion Fig. 1. Influence of maturity and grain color on yield, TADD and starch content. • Environment had a larger effect on parameters than hybrids • Dryland in western evironments produced the hardest kernels • Across environments, P84Y00 produced the highest yield and Macia produced the hardest kernels • Full maturity hybrids had higher yield under better environment, had softer kernels and more starch in poorer environments • White grained hybrids had higher yield in better environments, and softer kernels and more starch in poorer environments Materials and Methods • RCB experiments with 18 hybrids were planted in 13 environments (2004 and 2005, irrigated and dryland, low and recommended N, and 4 locations) • Data collected included grain yield, kernel weight, bulk density, true density, tangential abrasive dehulling devise (TADD) removal, and concentration of protein, starch and oil • Data were analyzed by ANOVA, Pearson correlations and stability analysis of the environment X hybrid (E X H) interaction effects • L.S.D. (0.05) was used for separation of main effect means
