Water stagnation and submergence is a major factor in rice growing as rice requires substantial water and is grown in paddy fields with adequate water. Water stagnation and submergence happens due to excessive rainfall or flash floods caused by release of water from upstream dams. The duration of submergence can last several weeks, and the level of water may be as high as 100 cm. This impacts rice yields.

The book analyses different aspects viz. morphology, physiology, biochemistry, and genetics and reviews the suitability of different varieties for better sustainability and reduction of yield loss. It also reviews the different types of floods, and studies biological changes in indigenous and the recently developed rice varieties. There are seven chapters viz. Introduction, History of floods, Diversity of submergence, Adoptive morphology, Physiological aspects, Molecular and genetic aspects and Yield and yield-gaps. It is comprehensive with scientific dogma, findings and reasonings for students at universities and researchers.