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Effect of the temperature of maturation on the number of mature embryos/g FW produced by EMs from four lines derived from maritime pine megagametophytes (Family 1058) induced at 23° (A) or 28° (B), and proliferated at three different temperatures. Data are means ± standard error from six replicates for each line. For each set of data, values followed by the same letter were not significantly different according to the Mann–Whitney U-test.
