Post by Sergey Rosbakh

Over the years, one question has followed me to conferences, workshops, lectures, and countless email exchanges: "How do you actually measure these reproductive traits?" How do you quantify pollen longevity? How should seed dormancy be assessed? What is the best way to measure seed longevity or seedling performance? Which protocols should be used so that results are comparable across studies? As someone who has been working on plant regeneration traits for many years, I often found myself giving very long answers: sharing protocols, recommending papers, and sending extensive reading lists. While excellent methods existed, they were scattered across the literature and often difficult to access, especially for researchers entering the field. Today, I am incredibly proud that, together with a fantastic group of talented, motivated, and engaged colleagues from around the world, we have brought this knowledge together in one place. Our new handbook, "A handbook for standardised measurements of plant reproductive traits: from pollen grain to seedling," provides standardized protocols for 58 reproductive traits covering flowers, fruits, seeds, and seedlings. This work represents the first comprehensive effort to standardize measurements across the entire plant regeneration cycle: from pollen grains ensuring successful fertilization to seedlings establishing the next generation of plants. I truly hope that this handbook will make life easier for students, researchers, conservation practitioners, and anyone interested in understanding how plants reproduce, regenerate, and respond to environmental change. Personally, I know that from now on, my answer to the question "How should I measure this trait?" will be much shorter: "Here is the handbook." This publication would not have been possible without the enthusiasm, expertise, and generosity of all co-authors involved. It was a privilege to work with such an inspiring international team. #PlantEcology #SeedEcology #FunctionalTraits #RegenerationEcology #PlantReproduction #SeedScience #OpenScience #EcologyMethods