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  • Seed quality at tree species’ altitudinal limits
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    Seed quality at tree species’ altitudinal limits

    The low-temperature range limit of tree species may be determined by their ability to produce and disperse viable seeds, with processes such as flowering, pollen tube growth, fertilization, embryogenesis and seed maturation expected to be affected by cold temperatures. Kollas et al. investigate seed quality of nine broadleaved tree species harvested at their upper elevation […] More