Screening of maize varieties for waterlogging resistance by determining leaf porosity

In the present laboratory and field investigations we sought to ascertain the effect of waterlogging on leaf porosity of maize (Zea mays L.) varieties Suwan and Ganga Safed-2. Eleven days old maize seedlings was treated with 2, 3 and 4 days of waterlogging followed by 2 days recovery in laboratory wherein the field condition, treatment of 4, 5 and 6 days of waterlogging followed by 2 days recovery was treated in 28 and 63 days of maize plant under the both laboratory and field situations. Porosity of root followed a decreasing trend with the increase in duration of waterlogging. However, 2 days of recovery period improved leaf porosity over their respective treatments of waterlogging in both the varieties. The improvement was however, more in Suwan than Ganga Safed-2.