Comparison on Drought Resistance of Different Maize Hybrids During Seedling Stage

In order to clarify physiological response of maize roots and leaves for drought during seedling stage, physiological indexes of maize roots and leaves under drought stress during seedling stage were studied by artificial control moisture.The results showed that under moderate drought stress,roots and leaves of different maize hybrid had physiological response for drought stress.during seedling stage.Through comprehensive comparison,four varieties of A09925×1-5-4-4-1,A09921×1-5CK,A09927×1-5-4-1-2,A09922×1-5-2-2had good performance on drought resistance,and could be used as the northern maize breeding.The varieties of A09924×1-5-3-1-2,A09152×09yin-2♂,A091292×09yinbei had worse drought resistance.The minimum water requirement of A09924×1-5-3-1-2was ascertained preliminary.