Abstract: Seed laboratory tests conducted on seed lots during storage are useful in predicting the commercial attributes of their performance in the field. The objective of the present study was to examine the relationship between various laboratory seed tests and field emergence of some maize hybrids lots. Laboratory and field emergence experiments were conducted on samples of 30 maize hybrids lots. Seeds of lots were placed in storage for 18 months from October 2011 to March 2013 under laboratory natural conditions of Seed Technology Research Unit in Mansoura, Dakahlia Governorate, Field Crops Research Institute, Agricultural Research Center, Egypt. Every 6 months, samples of each lot were evaluated in the laboratory for standard germination, shoot and root lengths and seedlings dry weight (seedlings measurements), cold and accelerated aging tests (vigor tests). Field emergence experiments were carried out on seeds lots after 6 and 18 months in storage at Tag AL-Ezz, Agricultural Research Station Farm, Dakahlia Governorate, Agricultural Research Center, Egypt, in March 2012 and 2013 years. The standard germination, seedling measurements and seed vigor tests were significantly different in the studied maize hybrids lots after 0, 6, 12 and 18 months storage. Standard germination, cold test and accelerated aging test of 30 maize hybrids lots were significantly declined with prolong storage period up to 18 months as well as field emergence from 6 to 18 months. The highest correlations were detected between field emergence after 6 months storage and standard germination after 6 and 0 month followed by cold test after 6 months and accelerated aging test after 0 month. The best model for prediction of field emergence after 6 months storage was; field emergence = 11.33+0.82 (standard germination); r2 = 0.725. After 18 months of storage, the highest correlations value (0.741) was recorded between field emergence percentage after 18 months of storage and field emergence percentage after 6 months of storage. It was followed by germination percentage after 6 and 18 months, accelerated aging test after 0 month, germination percentage after 12 or 0 month and accelerated aging test after 6 months of storage. In order to predict field emergence after 18 months of storage, we can use the following model 5.36-0.86 (standard germination percentage after 6 month); r2 = 0.438, followed by 17.94+0.66 (standard germination after 18 months); r2 = 0.351.