Breeding New Micro Tomatoes

A while ago a very generous person gave me some seeds from a miniature dwarf variety of tomato called Micro Tom.  I am very fond of this variety and am slowly building up numbers of seeds and distributing them to other growers.  This variety carries several miniaturising genes which mean that it only grows a tiny plant less than 10cm tall, this tiny plant can produce a small number of cherry tomatoes.  These cherry tomatoes taste ok and I believe the plants are meant to carry some genes for resistance of various diseases.

Breeding vegetables is enjoyable, but too often progress is slow due to only being able to grow one generation per year.  Creating a new variety of tomato often takes 5 to 10 years or more!  Breeding micro tomatoes can be a lot faster.

In any breeding endeavor the lack of space is always an issue.  After selling the property I no longer have the luxury of space which makes the problem worse.  This has started me thinking a lot more seriously about breeding a few new types of micro tomato by using Micro Tom or another micro tomato as one of the parents.  While I am trying to build up numbers of Micro Tom seeds and distribute them I am also using a small number in breeding projects.

Micro Tom tomato

Micro Tom Tomatoes are good, but they could be better
Micro tomatoes have very short life cycles so several generations can be grown per year.  They are often used in studies as a model organism due to their short life cycle.  From planting the seed to harvesting the fruit and planting that seed takes a little over 3 months.  I can potentially grow 3 to 4 generations a year, this means creating a new variety can take as little as 2 years (but probably a bit more than that).

Micro tomatoes take up a small fraction of the space of a regular tomato which allows for more plants to be grown in a small space.  Growing more plants means faster progress.  Space is always limiting when breeding new vegetables, even if I had acres of greenhouse space I could always use more to create more varieties a lot faster.

People overseas are breeding many new types of micro tomatoes, unfortunately we have no access to them in Australia as importing tomato seed legally is expensive and difficult.  To that end, if we are to have better micro tomatoes then someone in Australia will need to breed them.

Micro Tomatoes

Someone should breed better micro tomatoes
Micro tom, while cute as a button, is not the tastiest tomato in the world.  It is not bad, but it is not great either.  Someone should breed a tastier micro tomato in Australia.

Micro tom, while reasonably productive, could be a lot more productive.  Even though it takes up such little space it would be nice if it were more productive.  Even though it grows and crops well in a small cup of soil I still think the more productive the better.  Someone should breed more productive micro tomatoes in Australia.

Micro Tom grows cute red round tomatoes.  While this is lovely it would be nice to have more variety, apparently there is a small range of various colours and shapes of micro tomato fruit overseas.  Someone should breed several shapes/colours of micro tomatoes in Australia.

Micro Tom can and will grow at any time of year if protected from frost and many people overseas grow them indoors over winter.  Unfortunately if the temperature is too low it can not pollinate properly and can not produce fruit.  While this is only an issue in a small number of places that get cold enough for this to happen it is still an issue.  Someone in Australia should breed micro tomatoes that are more productive in colder temperatures.

One truss with lots of flowers, this would be a good cross for Micro Tom

Some micro tomato breeding ideas
Here are some of my micro tomato breeding ideas.  I have started some of these projects and am several generations through them with plans of releasing some of them soon, others I do not even have the other parent to make the first cross.

Different shaped micro tomato, everyone seems to love roma shaped tomatoes for some reason, so I have started to make a micro roma tomato.  It looks good and tasted great, it is not as productive as it should be but that can be fixed.  When it is more stable and perhaps a bit more productive I may try to sell the seeds through my for sale page.

Micro Roma tomato - the best tasting micro tomato so far

Multiflora tomatoes produce hundreds of flowers per truss, it would be great to have a multiflora micro tomato.  This will increase the productivity vastly making micro tomatoes more than an edible novelty and convince more people to grow them.  This is proving more difficult as the low percentage of leaf area of the micro tomatoes makes creating a tasty multiflora micro tomato a bit of a challenge.  I dont just want a productive micro tomato, I want it to taste good too.  It will happen, it will just take a little longer.

Finding the balance between lots of fruit and tiny plant, this micro tomato is under 9cm tall

Different coloured micro tomatoes are fun and pretty.  While getting the colours in is easy, getting a better tasting coloured micro tomato is the tricky part.  There is little point having an amazing looking micro tomato that does not taste great.  Green when ripe tomatoes tend to taste the best but people tend to shy away from them so I may concentrate on other colours to begin with.  Yellow, tangerine or stripey are always favourites, black (muddy brown) and high anthoycyanin lines are also options.  I dare say I will produce a few different things over the next few years.

Having tomatoes in the midst of winter is great.  Cold weather can prevent pollination in tomatoes.  I would love to one day grow a parthenocarpic micro tomato that can set fruit in cooler weather if protected from frost.  The genes here are a little tricky to work with and I dont have any parthenocarpic tomato varieties to use as parent stock so I have not yet started this project.

Breeding tastier micro tomatoes is interesting as growing conditions play a part in taste.  Different people have different ideas of good tasting tomatoes.  Taste is always going to be one of the traits I want in micro tomatoes.

Breeding new micro tomatoes would be simple and fast if we had access to many types of micro tomatoes with a wide array of genes, but in Australia we dont have access to many at all.  Things go a lot faster if the other parent is a dwarf tomato, but there are so few dwarf tomatoes in Australia that sometimes a regular tomato has to be used.  Luckily it is pretty obvious early on as to which seedlings are micro tomatoes and which are not so culls can be made while the plants are tiny seedlings.


Where to get micro tomatoes
When I have stabilised a few good lines I plan to name them and sell their seeds.  I will most likely list them on my for sale page when they are ready.  This probably wont be for a while yet as I do not have a garden or yard at the moment so progress is slow as everything is growing in pots and most of my seeds are stored away for the moment.

Micro Tomato Seedlings and regular tomato seedlings, it is simple enough to tell which are which

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Hit the ground running

We have had the joy of moving into Mudflower with tonnes of rotting fruit everywhere, Damo has been out there with shovel and bags collecting it all up in the 40+ degree heat. Very little fruit is left edible, which is just so sad. But there was a plum tree covered in yummy goodness.


Yesterday I collected a bucket full and turned them into some yummy jam and preserves.



Have collected another overflowing bucket full today that is now in the dehydrator and the rest will be turned into some plum sauce and plum chutney. Will share pictures of those results tomorrow.

The recipe I used was:

Recipe for Plum Jam in the Microwave 7/9/01. Bunty.

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450 g (1 lb) Plums
Grated rind and juice of 1 small orange
2 1/2 x 15 ml tbsp water
375 g (12 oz) granulated sugar

1. Halve and stone plums, place in a large dish with the water and microwave for 8 - 10 mins on High until tender.
2. Add sugar an stir.
3. Cook on High for 2 mins. Stir.
4. Cook on High for 8 - 10 mins Stirring several times until
setting point is reached.
5. Cool slightly and pot.

I have successfully been making my jam this way since 1982.

From:
http://www.realgardeners.co.uk/archiverecipes/recipe_for_plum_jam_in_the_micro.htm

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Aquaponics Update August

Latest update of my aquaponics system during first 7 days of Raya. The ph and ammonia is so high. Maybe it is due to the alkaline condition of the media caused the ineffective nitrification process. Anyway, the ph is around 7.6 and the ammonia level around 1.0ppm.

From my observation, the watercress are doing very well in this kind of growing techniques. The water level is constant with continuous flowing rate at small volume on each grow bed.

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Moving to town

Recently we have moved to town.  We had to sell the property for a number of reasons.  I will miss a lot of things about the property but unfortunately selling was the right thing to do at this point in time.  We are now renting a nice house in town.

Moving to town has been difficult, we have had to sell our animals and alpacas and they are sorely missed.  Our daughters were born in our old house and I developed Immali corn and a few other varieties of vegetables there.  It has a lot of memories and moving was far more difficult than I thought it would be.
In our last few days someone stole our firewood and someone else broke into the mud brick house and cut/took the antenna cables (yet didnt steal anything).  We know who did both of these things but unfortunately can do little about it.  That made moving even harder and more emotional.  I have been praying that I can forgive them, yet I find this very difficult.

Babingtons leek flowering after the move

We have also been very lucky, we asked our new landlord if we could keep two guinea pigs and he allowed us to keep them.  This has made the transition far easier for the kids and they often sit outside holding and patting the guinea pigs.  I think guinea pigs are amazing little animals and very under-appreciated pets.  I should write a post on guinea pigs at some point.

We also asked if we could keep some chickens and the landlord graciously agreed.  I truly appreciate being allowed to keep them.  This has been great as we still have eggs.  It has been many years since we have had to buy eggs and I dread the thought of that ever having to buy them again.  I dont have a rooster so will not be hatching any eggs in the immediate future.

Araucana cross and silkie cross chickens

We took our last two sheep to the butcher and they are now in the freezer so we will not have to buy meat for some time.  I doubt we will be growing our own meat here in any way.  Perhaps I will get some quail or be able to set up a small aquaponics system and raise some edible fish when we move next.

This rental house is very nice and the street is pleasantly quiet, but it does not have a vegetable garden.  I dont understand how people grow food without a vegetable garden.  I am at a loss here.  I guess they pay someone else to grow all their food and simply buy it from a supermarket?  That seems odd to me.  There are so many things that I like to eat which I can not get from a store, other vegetables are so much better fresh.  What I would give for even a tiny plot.  They are a bit precious about grass here so I can only grow things in pots which I have to keep on concrete or pavers in fear of damaging the lawn.

Vegetables but no land in which to plant them

The same vegetables from the other end

Duck potatoes, they grow well in a bucket

I dug up some of most types of vegetables/herbs and brought them here with us.  I could not take many of each, just enough to start again.  Some things do well in containers, others do not.  Many plants have died in the move and many more are looking weak.  I hope that we get to move somewhere with a vegetable garden before many more things start to die.

Micro Tomatoes - unfortunately not all survived the move

Chilli seedlings from rare imported seeds

When I get set up somewhere with a vegetable garden I plan to grow and sell vegetables and seeds again.  I miss having a garden.  I may have some Babingtons Leeks and perhaps some other things things for sale soon but cant get too serious or have too many spare plants when growing in pots.  When I do start to sell vegetables again I will list them on my For Sale page.

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Nitrogen Cycle and Moving Bed Filter

Nitrogen Cycle

Nitrogen Cycle

One of the most important concepts in aquaponics is the nitrogen cycle. Without a full understanding of it, you will not know "how" aquaponics actually works. But if you take a little bit of time to think about it, its not too hard. 

The fish produce waste, and there is usually some food floating around that does not get eaten. These two when let to sit in an aquarium, start to break up, and this creates ammonia. This is the first step in the nitrogen cycle. While ammonia starts the cycle, it is very dangerous and deadly to fish if the ppm (parts per million) gets too high.

The nitrogen cycle has two naturally occurring bacteria that do most of the work. The first bacteria to aid in the nitrogen cycle is nitrosomonas. This bacteria converts ammonia into nitrites. Fish can tolerate nitrites more than they can ammonia, but it can still be toxic to them. 

Nitrospira is the secnond naturally occurring bacteria that aids the nitrogen cycle. Nitrospira consumes the nitrite produced by nitrosomonas and produces nitrates as a byproduct. Nitrates are much safer for fish than either ammonia or nitrites. However if there is nowhere for the nitrates to go and they are not being consumed, it can kill your fish.

In a home aquarium, the nitrates are removed by doing water changes, or if there are plants in the aquarium, they will consume the nitrates, which is essentially plant food. 

In aquaponics, we not only grow veggies, fruits, and fish, we also cultivate these bacteria. Without nitrosomona and nitrospira, aquaponics would not work the way it does. We use their by-products to feed our plants so we do not need to add fertilizers. 

So the key to aquaponics is producing enough nitrates for your plants to grow, and having enough plants to consume the nitrates. While reading up on different filters for my aquarium (before I converted to aquaponics), I came across moving bed filters. 

Moving Bed Filter

A moving bed filter in short is a nitrate factory. It uses small filter media that have extreme amounts of surface area to catch all the bacteria that flow through the filter. The idea is very similar to the way aquaponics works. The filter media cultivate the same naturally occurring bacteria, nitrosomonas and nirospira. Theses filter the water like a mini nitrogen cycle. The filter media is designed to work best when they are moving around in the water, hence its name. 

Tilapia Approved! 

Moving bed filters use nontraditional filter media. Many products can be used but through my research I found that Hel-X. Hel-x has 40% more surface area than its competitors and comes in an array of sizes.  

Close up of Hel-X filter media.
The surface area on these are impressive!

Usually aquaponic systems do not have filters (well Deep Water Culture does but...), however I believe adding this type of filter would be a huge benefit to aquaponic systems.

When I met Alex Blackwell, I brought with me a bag of Hel-X media. The idea was to build a moving bed filter for his system. After a day or two of collaboration and brainstorming, we got the idea of using a moving bed filter as a prefilter for his pump. 

Alexs pump is in the fish tank and the mechanical filter it came with got clogged weekly with all the fish waste. This slowed the flow rate and turned the water a murky brown color, not the best. We designed and added the moving bed filter to the pump. The pump pulls the water through the moving bed filter and stirs up the Hel-X. It works amazingly!

The filter has cleaned the water and increased the flow rate.
Once the bacteria is fully established, it will provide filtration
and nitrates for the plants.

The moving bed filter in the Blackwell system cleaned up the water and increased flow rate. Once the bacteria has a chance to colonize the Hel-X the filtration will consume the ammonia and decrease ammonia spikes. Plus once it is established, it will be pumping extra nitrates into the grow bed each time the pump runs, which is 15 minutes of each hour.

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My Mini Aquaponics Set

Hai everyone, since my bigger aquaponics set left behind in Sabah. Therefore I made a new one here in Johor. This is just experimental indoor set. Because of large space is not available, I just make a mini set. I have gone through a lot of trouble in finding the material needed, and finally, this is the result.

Overall view

Grow bed

Fish tank/ container

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Yacon Pineapple slaw

I love yacon, it is sweet and crunchy.  I mostly eat yacon raw, I just peel it, slice it thinly and eat it.  We have tried eating it a few other ways and most were good.  It tends to take on the taste of whatever it is in with so is reasonably versatile.  I have even used some of our yacon roots and water kefir grains to make yacon water kefir which was nice enough even though I prefer regular water kefir.

I normally leave the yacon in the soil until I want to eat it, if I happen to leave it for too long the plant simply gets larger and stronger and returns a larger crop next time.  Recently we have moved from our property into a rented house in town, as such I dug up a small number of yacon plants to grow as well as a heap of the tubers to eat.  Being so hot and dry out here the tubers do not last overly long.  I wanted to find a few new ways to eat yacon as I can not stand the thought of wasting it.  I looked on the internet and stumbled across yacon pineapple slaw.

Yacon growing in a pot - it belongs in the soil

I found a nice sounding recipe, then changed it a fair bit, and made it with a group of school children.  It was delicious and super easy to make.  I am putting the modified recipe here partly to share it and partly so that I have it saved somewhere so I can make it again.

Ingredients:
Yacon tubers, 1 large tuber or a few small ones
1 can of pineapple (or a real pineapple peeled and cut into small pieces)
The juice of 1 lime or a lemon (lemons are the poor cousin of the lime, but they are cheaper)
1 chilli (this can be left out)

Method:
1) Juice the lime (or its poor cousin the lemon)
2) Peel the yacon tuber
3) Grate the peeled yacon
4) Add lime juice to the grated yacon.  Mix together.  You have to do this as soon as possible otherwise the yacon will turn black
5) Cut pineapple into tiny pieces, add pineapple and any juice to the yacon
6) Remove the seeds from the chilli.  Cut up the chilli into tiny pieces
7) Mix it all together and serve

It really doesnt get any easier than this, and it tastes great.  It would be easy enough to add other things to this too as long as they are cut up tiny.  I think something crunchy and relatively tasteless such as shredded cabbage would bulk this out nicely.

Some of the more tropical and fruity tasting chillies could also work well in this as they would add taste but would still be crunchy.  There are a heap of tropical tasting chilli varieties, some have no heat while others are super hot, but few are available unless you import the seeds and grow them yourself.  One great place I have found for chilli seeds is pepper lover, they seem to love what they do and tend to include extra seed packets with orders.  Only some species can be posted to Australia so please do check the AQIS BICON database first.

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