Finally tried Tarocco blood oranges!
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What makes the Tarocco blood orange turn color?
Comments (12)Dr. Manners, went back and did more reading on the biosynthesis of anthocyanins, and you are indeed correct. Although the components that produce the end product - anthocyanin are of course transported to the site (pulp and peel for citrus), they are "assembled" for lack of a better word, on site in the vacuoles of the cell where the pigment is displayed. Actually, (shockingly?), Wikipedia has a very nice synopsis of the biosynthesis of anthocyanin, and the entry is well-referenced. Now, that all being said, my biochemistry is OLD (can we say 1980?), so pretty rusty, but yes, you're quite correct - happens in the peel and pulp, and the anthocyanin can travel to the pulp from the peel, even after picking. And since there are several enzymes responsible for the creation of anthocyanin, there can be any number of genetic or environmental factors which can affect anthocyanin synthesis. So, some years you may get very pigmented oranges, and other years, not so much, even from a tree with good anthocyanin "genes". What I found very interesting as an aside, is that pretty reddish tint you see in a rose's new growth is caused by juvenile anthocyanin. I wonder where it goes though, after the leaves mature and turn green? Or does it NOT go anywhere, but is "overruled" by chlorophyll?? Travel to the red petals of the flower (red/dark pink roses have much redder new leaves). Guess that's another topic for another forum, lol!! I will always defer to your expertise, I am no biochemist for sure!! Patty S....See MoreWorried if she'll bounce back?! (Tarocco Blood Orange)
Comments (17)(formerly GKGK): Good to hear about the baby leaves! That is a good sign. I suggest waiting to feed until you can confirm the leaves go beyond the small size and you have a few inches of new branch growth. I have a Wash.Navel and Red Blush that were recovering from over feeding (with small "baby" leaves) last July. i gave them more food - - and that stopped the growth. The Red Blush is just now starting to grow again. The WN is stagnant - but i have been flushing.... Stunted growth is a symptom of Nitrogen deficiency. If you have damaged the roots then the plant cannot take up the nutrients and only gets hammered by the salts....See MoreWhy won't a mature blood orange tree bloom?
Comments (26)JB made a good point, if it’s a seedling tree, yes it could take a lot longer to start bearing fruit. Starving your tree of nitrogen before new flushing is one way, but they still need micro,s and p, k., just don’t cut the tree down....See MoreHelp Sourcing Moro Blood Orange in Central FL?
Comments (13)Update: on my way out to a wedding Saturday, I was able to stop at Pokey's out in Zellwood to ask in person if they ever sell cuttings. A very, very nice employee told me that, while they don't sell them, he'd be happy to grab me a couple to take home at no charge if I told him what I was looking for. A couple minutes later, I was on my way with three cute little four-inch Moro cuttings to try and root. After a dip in the hormone, they're sitting out on the heating mat on my (very small) patio in one-gallon black nursery pots. If anyone's willing to send some good energy my way that they actually root, I'd really appreciate it!...See MoreHome
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