Age seaweed seedlings reflects the level of productivity of seaweed to grow and evolve, including the ability to optimize the process of photosynthesis. Seaweed seedlings obtained from breeding centers should aged 20-25 days to provide maximum growth. Seaweed seedlings were too young to need a period of adaptation in advance and still relatively vulnerable to changes in water quality.
Whereas if the seaweed seedlings used more than 25 days old, the ability to grow seaweed that is not optimal, youth networks that exist on the seedlings do not develop properly, so that the growth obtained is also less than the maximum.
The maximum growth at that age due to primary meristem tissue available so that they can hold a lot more cell division optimally. The cells of the primary meristem tissue commonly found in embryos, parts of the ends of young stems or thallus plants such as seaweed. Based activities, growth in the primary growth areas include:
(A) Regional division, is an area of active cells divide by mitosis (meristematic).
(B) Regional elongation, an area which is behind the cleavage area.
(C) Regional differentiation, is the rearmost part of the region is an area of growth and differentiation which is the area that the cells experience changes that form the tissues and organs that have different structures and functions.