What is the definition of a pine fascicle? 23. What is the morphology of some conifer pollen grains? What is the possible function of this morphology? 24. What is the name of the structure in a female pine cone that directly bears the ovules/seeds? From what was it evolutionarily derived...
In fire-prone environments, some species store their seeds in canopy cones (serotiny), which provides seeds protection from the passage of fire before stimulating seed release. However, the capacity of serotinous cones to protect seeds under high intensity fire is uncertain. Beyond simply “high”...
Fruit traps Fruit traps were made in inverted cones of mosquito netting (depth = 80 cm) with a circular mouth of polyethylene pipe (receiving face = 0.5 m2). Each trap was supported by 3 vertical woody poles at a height of 1 m above the ground. I installed traps below the cr...
with the cushion growth form being genetically fixed (i.e. obligate) for many species, but facultative for others i.e. only adopted in windy habitats; (Hauri1912; Spomer1964). The cushion growth form may also reflect responses to other stressors, such ...
The Parana pine produces a big (5–8 cm) and highly energetic seed (weighting c. 7 g), each female producing on average 13–20 cones with 80–90 seeds per cone after 20–24 months of maturation25. Seed maturation and seed fall occur from March to June25, providing a key food ...