[Theme music plays]
(Glen Paul) G'day, and welcome to CSIROvod.
I’m Glen Paul.
Wheat is Australia’s most valuable grain crop,
worth over $5 billion to the country annually.
But what’s going to happen to that wheat under climate change?
Will it just wither and die as temperatures increase,
and there’s more droughts and increased levels of CO2.
Well, I’ve come to Perth in Western Australia to find out,
because it's here at the CSIRO Laboratories
that they’re creating a world of tomorrow
a world to replicate the environment of the year 2050,
to see if the wheat will be able to survive in those conditions.
Creating such an environment means considering many variables,
which the CSIRO team had to build
into these specially designed tunnel houses from the ground up.
(Sam Henty) The three factors we’re saying
climate change will affect is an increased temperature,
which we replicate with a fan
that pulls air though the tunnels at different speeds,
so the slower the air movement through the tunnel, the increased temperature.
Temperature is also increased from the sun,
and it’s able to penetrate our tunnels via
a plastic that is called F-CLEAN that has been imported from Japan,
which basically only cuts out 1% of light,
and allows UV through, so it’s basically like a flexible glass.
The second factor is increased carbon dioxide,
and the way we regulate this is by injecting
carbon dioxide into the tunnels based on our sensors and a solenoid system.
CO2 is drawn from our vessels
storage vessels over here
and we aim to keep the carbon dioxide concentration
in the tunnels at double what we’re breathing at the moment,
which is about 700 parts per million.
The third factor is drought,
and the way that we regulate that
is
we have an irrigation system
which we can isolate different parts of the tunnel
and restrict the water accordingly.
Drought is obviously the most obvious affect,
and you can see in the tunnel
the plots that have been affected by drought at the moment
are yellowing.
The reason we're doing this research
is for 50 years’ time, when potentially climate change
could reach these levels,
we need to be ready
and have plants that will be able to cope with this
situation to feed the world, and feed you.
(Glen Paul) But to develop types of wheat
that might be able to stand up to climate change
you also have to know what’s going on beneath the soil,
which can be difficult without digging the plant up to look at its roots.
(Dr Palta-Paz) To overcome the problem
we developed this system of root boxes
in which we grow the plants here and allow us
to visualise
and to quantify in a daily basis
what happen when you grow the roots
when exposed to the different scenarios of climate change.
This plant we’re planting just ten days ago,
we can see the growth of the seminal roots.
(Glen Paul) The soil used in the root boxes
comes from where the wheat is going to be grown,
and has to be packed to the same density to accurately replicate
how it might grow in the field.
As the roots grow photographs can be taken and their growth marked out.
(Dr Palta-Paz) This is for two different
genotypes of wheat growing under the same conditions.
We can see here that there is more roots,
more branches of the roots, compared with this.
They were planted on the same day in the same conditions,
so this is the same, we can see big difference in the root systems.
And this is what we're interested to know,
how the different genotypes respond
to the climate change in relation to their root growth.
(Glen Paul) The task now for CSIRO
is to bring all this information together.
(Dr Palta-Paz) We need this information
so we can pass this to breeders
to produce new cultivars of wheat
that are more adapted to the conditions
of climate change in the year 2050.
(Glen Paul) Climate change is real, and it is happening,
and if we’re to avoid a food crisis into the future
it’ll be because of scientists such as Jairo.
If you’d like to find out more about the research
visit us online at www.csiro.au.