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ARS Home » Plains Area » Manhattan, Kansas » Center for Grain and Animal Health Research » Grain Quality and Structure Research » Research » Research Project #429470

Research Project: Impact of Heat and Drought Stress on Sorghum and Wheat Grain Composition and Chemistry

Location: Grain Quality and Structure Research

Project Number: 3020-43440-001-04-S
Project Type: Non-Assistance Cooperative Agreement

Start Date: Sep 1, 2015
End Date: Aug 31, 2020

The overall objective of this cooperative project is to evaluate the effect of heat and drought stress on both sorghum and wheat grain composition and chemistry. Research will address how periods of both heat and drought stress impact final grain composition as well as how abiotic stresses at specific time points during grain filling impact final grain composition and chemistry.

Wheat and sorghum lines will be exposed to heat stress during grain filling by growing them under field based heat tents. At maturity, samples will be collected for grain chemistry and compositional analysis. In addition, precisely tagged flowers will be sampled temporarily at least four times during the grain filling period. The collected samples will be analyzed to unravel the dynamics behind protein and starch build up during grain filling and composition as well as for nutritional properties such as digestibility on exposure to abiotic stresses.