Even drought tolerant crops such as sorghum and millet, and recently planted cassava, are showing signs of stress.
Good drainage is essential for drought tolerant plants and so gritty topsoil has been used, mounded up into bunds over rubble filled subsoil.
Recently, transgenic rice modulated in the polyamine biosynthetic pathway has been found to be drought tolerant [2, 3] .
This tropical plant is somewhat drought-tolerant and can handle low temperatures above freezing for a short time.
Brambles, are fairly drought-tolerant and are sometimes grown without supplemental irrigation.
