Canola Flower (image) American Society of Agronomy Share Print E-Mail Caption Canola flowers opening under control and high nighttime temperature are marked. This allows the researchers to understand the different impacts of stress on yield. Credit Meghnath Pokharel. Usage Restrictions Please use with story only Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.