Wednesday, January 6, 2021

Golden kiwi, Actinidia chinensis

 By now I have fruited three different golden (yellow) kiwi accessions. My oldest female is the result of the grafts I made in 2016. The scions came from a member of Santa Clara Valley (SCV) chapter of CRFG. Someone brought a male and a female cuttings of golden kiwi for one of the regular meetings at Prusch Park.  These ones I keep under "SCV golden female" and "SCV golden male" names.  They both are grafted onto the same Vincent female of fuzzy kiwi.

Later, in the same year, I came across the seeds harvested from a yellow kiwi with red center.  I planted 14 seedlings in 2017. A number of males and one female bloomed in 2019, but no fruits were made that year. In 2020, two females bloomed and both produced fruit. None had red center, but both are exceptionally sweet.  I was not planning on releasing the material from them this season, as I wanted to evaluate them better. I am releasing them early, as both fruits seems to be better than the "SCV golden female". I do not have data on productivity. Keep in mind that these are EXPERIMENTAL and all I have is the observation of few fruits in one season! These females probably need their own male.  I do not know if SCV male will pollinate them, but their blooming times overlap.  They all bloomed in early April in Vacaville, California. 

SCV golden male and female

The fruits are very late, December harvest.  They are good, but not as complex as the ones we get from Zespri kiwi packs.
They still have some fuzz on the immature and developing fruits.

Female flowers
Male flowers

EXPERIMENTAL seedlings

The foliage is very ornamental with a lot of red colors in the developing shoots. The amount of red color in the foliage varies between seedlings.  Some male plants had pink flower petals. 

EXPERIMENTAL male flowers

EXPERIMENTAL female flowers

EXPERIMENTAL "Early Female #1" fruit. Now called "October Sunrise"

I only had one fruit this year, it ripened in mid-October and was exceptionally sweet and flavorful.  It is small in size and fuzz-less when ripe.

EXPERIMENTAL "Late Female #2" Now called November Sunset"

I had 5 fruits on this plant, but I started picking them early, and the first 4 I picked were not ready.  The last one picked in late November was kept for too long on my kitchen counter and shriveled.  Never the less, it turned out to be an exceptionally sweet and flavorful fruit.  The flesh seems to be greener than #1 and the fruit seems to have more fuzzy skin.

Developing fruits of #2



8 comments:

  1. I enjoy reading your details on these kiwi...photos are helpful too... you really give me some good tips for how to best document my own vines! Thanks!

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  2. I had a golden kiwi grown at wolfskill orchards recently and it was delicious. I am on the hunt for male and female vines now. Any leads on where I can buy a couple of them? Thank you

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    1. I’ve never seen golden kiwis available in the nurseries as plants. I occasionally sell the scions at reallygoodplants.com You would need a rootstock plants and to know how to graft for those.

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    2. Can these be grafted on to the hardy kiwis? Or I would need a chinensis?

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    3. Yes, chinensis seems to be perfectly compatible with deliciosa rootstock

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  3. I actually don’t know about the hardy species, but I’m going to test it soon

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  4. that's really exciting! I've been really obsessed with growing all sorts of kiwi since I was 14 years old and grew my first seedlings from supermarket Zespri fruits of green deliciosa. I live in Germany though (border of Zone 7b/8a) and unfortunately the deliciosa seedling I still have has not been doing well and has still not flowered (it's 15 years old now and a graft of it's own, the original plant died back due to some root issue 5 years ago). I'm currently doing online research on the golden chinensis kiwi cultivars developed by Zespri and really intrigued to know, what kind of interspecific hybrids they used. In eastern Europe, there's a hairless (on the plant) cultivar named "Zakarpacie" which is grown in the Ukranian Karpathian mountains and has found it's way to countries like Poland, Slovakia, France and Belgium. On the online shops, they state, it being a cold hardy hybrid of deliciosa x arguta. In my backyard, I've also got kolomikta growing - the shape of the leaves on Zakarpacie really remind me more of kolomikta (more heart-shaped) than arguta - and when I look at the pictures of some of your seedlings it kind of also reminds me of the red-pink-white flush on the tips of new growth on kolomikta males. Do you know, if it's even possible to hybridise kolomikta with deliciosa/chinensis, or would you first have to make the "link" via an F1 of chinensis x arguta and then an F2 of (chinensis x arguta) x kolomikta? At this point, I'm really considering to add a Golden chinensis variety as well as the Zakarpacie to my small kiwi orchard and try to preserve some kolomikta pollen in the fridge, to then hand pollinate a Golden or any deliciosa/chinensis available flowering, but that would take me many years I guess.

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    1. Unfortunately I don't have experience with kiwi hybridization, no idea if it's possible

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