Question: Explain Variegation in Ivy (xi): recap
Basically an Ivy leaf is a green mesophyll layer netted with veins sandwiched between the colourless epidermis. The mesophyll in turn is composed of the green palisade mesophyll on top of the lesser green spongy mesophyll where the veins run through.
SAM
Leaf cells, like all plant cells, originate from a meristem. Distinct layers of the meristem contribute specific sections in a leaf. L1 contributes the epidermis, L2 the margin of the mesophyll and L3 the venation and centre of the mesophyll. The L3 layer cells are sandwiched between the L2 layer cells. This is important because this construction conducts the colour pattern in a variegated leaf.
Chimera
Because of having meristem layers genetically different from each other the contributed cells in the leaf section are too. So, when one layer mutated to have albino chloroplasts the leaf section is colourless or shows the colour remaining in the cells.
Variegation
Chimeral variegation is the most common type of variegation, but stil very rare. In nature variegation is short lived because the green parts are usually stronger. It is man who keep variegated specimens alive.
It's time to test the theory. The next few posts I'll try to explain the leaf patterns with the information I gathered until now.
SAM
Leaf cells, like all plant cells, originate from a meristem. Distinct layers of the meristem contribute specific sections in a leaf. L1 contributes the epidermis, L2 the margin of the mesophyll and L3 the venation and centre of the mesophyll. The L3 layer cells are sandwiched between the L2 layer cells. This is important because this construction conducts the colour pattern in a variegated leaf.
Chimera
Because of having meristem layers genetically different from each other the contributed cells in the leaf section are too. So, when one layer mutated to have albino chloroplasts the leaf section is colourless or shows the colour remaining in the cells.
Variegation
Chimeral variegation is the most common type of variegation, but stil very rare. In nature variegation is short lived because the green parts are usually stronger. It is man who keep variegated specimens alive.
It's time to test the theory. The next few posts I'll try to explain the leaf patterns with the information I gathered until now.
posted by Me, Myself and Ivy at 12:18 PM
1 Comments:
g'day again, its morris from over at 'The Greatest Blog Experiment,' here is a little about myself and what i'm trying to do with my blog: I'm a 19 year old uni student living in Adelaide, South Australia. I'm farely new to the blog scene, but sorry that i hadn't got into it sooner. Part of the reason i've created my blog is to link up the blogger community, and create something of a blog directory so its easier for people to surf through blogs in particular topics.
Also that opening post is only going to stay there till i get a few more links, then i'll start adding actual content to the blog- but it will be content orientated around the concept.
Hope that answers your questions, if you want to know anything else you only have to ask.
cheers
morris
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