چرا صنوبر دهه ها طول می کشد تا تکثیر شود؟ یک مطالعه ژنتیکی سرنخ هایی را ارائه می دهد

Why do spruce take decades to reproduce? A genetic study offers some clues

New techniques have enabled researchers in Sweden to begin decoding how one of Northern Europe's most important coniferous tree species switches from growing branches to producing cones—their seed-bearing reproductive organs.