Environment Influence on Grain Quality of White Sorghum J. Griess, S. Mason, D. Jackson and R. Elmore University of Nebraska, Lincoln, NE 68583-0915 • 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 • 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 Conclusion • 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 Materials and Methods • 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 Objectives Introduction Table 2. Hybrid effects on yield and grain quality Table 1. Environment effects on yield and grain quality Fig. 1. Influence of maturity and grain color on yield, TADD and starch content. Other Results • 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

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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. - PowerPoint PPT Presentation

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Environment Influence on Grain Quality of White Sorghum

J. Griess, S. Mason, D. Jackson and R. ElmoreUniversity of Nebraska, Lincoln, NE 68583-0915

• 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

• 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

Conclusion • 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

• 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

Objectives

Introduction Table 2. Hybrid effects on yield and grain quality

Table 1. Environment effects on yield and grain quality

Fig. 1. Influence of maturity and grain color on yield, TADD and starch content.

Other Results

• 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