C-35 fruits

[kumin]

Does anyone have a few ripe C-35 fruits to send for comparative purposes? I have a tree with uncertain parentage I'd like to determine whether it's actually a C-35 tree or not.

[sc4001992]

Do you have a photo of the fruit, I'd like to see it. I know a member who has a large tree that has a mandarin grafted onto it, but I don't think his rootstock has any branches with fruits.

[kumin]

Several photos of the fruit on and off the tree.

[sc4001992]

Nice size fruits, I didn't know they were that big.

[kumin]

Yes, this is one of the factors that leads me to be uncertain as to it's identity. The only reason I contemplate it being C-35 is that during the outdoor trial some of the seedlings root-grafted to one another. Subsequently, it appeared that some of the hardiest F² seedlings roots enabled F¹ seedlings to survive.

However, there's no definitive proof of this occurrence in this particular case. The low seed count seems to be a lower than C-35 seed count (6 vs 9 average seeds per fruit. Also, one third of the fruits were completely seedless. Unfortunately, I have no first hand experience with the fruiting habits of C-35, unless this tree is indeed C-35.

I'm doing a seedling test to determine if the C-35 Zygotic seed percentage of 15% is replicated among these seedlings. If this selection is not C-35, it could contribute fruit size and tree vigor, low seed count and juiciness to its progeny. On the negative side is the fruits high acidity and unremarkable flavor. The Poncirus flavors aren't overwhelming, but there's also nothing remarkably Citrus-like in its flavor.

[sc4001992]

I remember seeing 3-4 old trees that are now rootstock only and has fruits every year on my bike trail.

I was not sure if it was a trifolate or C35. I went there today to see if there were fruits from the tree on the ground. There were many fruits, so I picked up a lot to grow out the seeds. These roostock trees have the tri-leaf pattern so it must not be the C35. If you want to see a fruit, I can post some photos I took.

[kumin]

C-35 is strongly trifoliate,as is my tree in question. F¹ Poncirus-Citrus hybrids are usually trifoliate, although there may be exceptions. A percentage of F² seedlings of the F¹ hybrids exhibit mixed leaf types including monofoliate leaves.


Photo of a zygotic seedling (F³) with C-35 as a grandparent. This plant exhibits monofoliate as well as bi foliate and trifoliate leaves. This is a Conestoga 010 seedling, likely self-pollinated.

[sc4001992]

Ok, then let me show you the photo of the tree and fruits I took with my phone.

I can take better photos of the fruits now with my camera since I brought many fruits back home.
I plan to go back and pickup more fruits from the ground since there were hundreds of ripe fruits that had fallen.

[sc4001992]

Kumin, can you tell me which rootstock grows larger, the Poncirus trifoliata, or the C-35?

I have the fruits from the rootstock tree for you, I think it might be the C-35 but you might be able to tell from my photos. The trunk of this 70+year old tree is large, and the top variety grafted was an orange (probably Valencia). These trees were the original trees here in Orange County when we had many orange groves. Now there are just a handful of these trees remaining and many have the top/main trunk cut so the rootstock takes over and are fruiting.

[kumin]

In my experience the tree that might be C-35 is much more vigorous. The fruits are probably 3-4 times as large and about a third of them are seedless. The average seed count was 6 seeds per fruit. My Collins trifoliate has about 30 seeds per fruit and has modest juiciness in contrast to the fruit in question, which has abundant juice. If the tree you're looking at is over 70 years old it may be a different citrange. as C-35 and C-32 were bred in 1951. Perhaps it's Troyer or Carrizo?

The online C-35 fruit photos appear considerably seedier than my fruit, but pollination was probably less than ideal.

[sc4001992]

ok, good to know. I will post all the photos of the fruit and trees for you later tonight. It does have the tri-leaves on almost every branch. I tasted multiple fruits and they are not really acidic or sour. Maybe just some acid to me.

The brix =15 was a big surprise to me since other good tasting fruits don't get this high a reading. Maybe you should just plant these seeds for your cold hardy trees.

[Millet]

C-35 fruit generally have 8 to 12 seeds per fruit (85% nucellar).

[sc4001992]

Just cut open 10 fruits to count the seeds.