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ENDOSPERM BARRIER. "In several species, including the model plant Arabidopsis thaliana, the endosperm has a pivotal role as a regulatory barrier. Germination and dormancy depend on the balance between the growth force of the elongating radicle and the resistance strength of the surrounding tissues." https://lnkd.in/dgHUjzK View in LinkedIn

SPONTANEOUS GENERATION. "The Ancient Greeks believed that living things could spontaneously come into being from nonliving matter, and that the goddess Gaia could make life arise spontaneously from stones – a process known as Generatio spontanea." Clearly a problematic concept. https://lnkd.in/eJXtXQy View in LinkedIn

COMPLEX TRAIT. "Dormancy is a complex trait because it is influenced by both environmental and endogenous factors. Moreover, the final level of dormancy is determined by the contributions of the different tissues that comprise a seed." https://lnkd.in/dgHUjzK View in LinkedIn

HALF-COOKED. "This continuity makes the conceptualization of life a very difficult task, since it should exist “half-living” or “quite-living” systems." https://lnkd.in/dEj5vVD View in LinkedIn

TYPES OF DORMANCY. "Different seed dormancy classes exist among plant species, which can be divided in physiological dormancy, morphological dormancy, morphophysiological dormancy, physical dormancy and combinational dormancy. Physiological dormancy is most common and can be separated into deep and non-deep, of which the latter is the most prevalent and also the major form of dormancy in plant model species." https://lnkd.in/dgHUjzK View in LinkedIn

LACK OF CLARITY. “The borders between the living and the nonliving, between the Nature-made and the human-made appear to be constantly blurring.” (Sipper). https://lnkd.in/dEj5vVD View in LinkedIn

"BUD DORMANCY prevents the outgrowth of buds, for instance in perennial plants during winter or in potato tubers, whereas seed dormancy prevents the germination of intact viable seeds during (temporary) favourable conditions in an otherwise unfavourable season. Both types of dormancy are characterized by very low metabolic activities and a temporary insensitivity to growth-promoting signals." https://lnkd.in/dgHUjzK View in LinkedIn

LARGE AND BLURRING BORDERLINE. "The fact that all the dominant modern theories consider that life progressively emerged from some kind of proto-organisms, strongly grounds the hypothesis of the existence of a large and blurring borderline between living and non-living, were the inert progressively fades into the living." https://lnkd.in/dEj5vVD View in LinkedIn

TIMING CYCLES WITH SEASONS. "The duration of these different states widely varies between species and the timing of the transitions between them is highly regulated. This regulation ensures that the most vulnerable phases of the life cycle occur during favourable seasonal and environmental conditions. Two of the systems that control developmental transitions depend on dormancy mechanisms." https://lnkd.in/dgHUjzK View in LinkedIn

PLANT CYCLES. "Plants are bound to the location where they have established themselves and require developmental adaptations to survive unfavourable environmental conditions. Most plants cycle between different developmental states, starting with the seed, followed by the seedling, the vegetative phase, and finally the reproductive phase." https://lnkd.in/dgHUjzK View in LinkedIn