In a previous paper, a test was described to screen varieties for quality of pollen formed at low temperatures : plants were placed in a growth chamber at 7 °C for 7 days ; after this cold treatment, the plants were placed in a glasshouse to flower ; from the 6th until the 17th day following the cold treatment, pollen quality at anthesis was measured by the percentage of normal grains. In 2 experiments, in October and February, the screening of varieties was good but the critical period was different in each month. Therefore this test has been carried out for 6 months with 3 varieties. The first results found in a previous paper were confirmed : after a first short decrease of pollen quality, a second more important decrease was observed for 2 to 6 days between the 7th and the 17th day following the cold treatment. When the environment in the glasshouse before and after the cold treatment was relatively good (high light intensity, longer day), the pollen quality decrease occurred more rapidly after the cold treatment. The mean of the measures on 5 consecutive days at the time of the second pollen quality decrease (between the 7th and 11 day in May or September, between the 9th and 13th day from end-March until end-April, between the 11th and 15thday in October, between the 13th and 17th day in February-March) gave good discrimination between the highly sensitive variety (« Coldset ») and 2 less sensitive varieties (« Precoce » and « Immuna Prior Beta »). Therefore varieties could be screened for their pollen fertility at low temperature in 6 months, comparing them with the controls « Coldset » (high sensitivity) and « Precoce » (low sensitivity).