The wheat is now just emerging.
If you look closely you can see the first seed leaves (the mono-cotyledons) emerging from the seedbed. The leaves are still quite pale at this stage as very little chlorophyll has been produced, this of course means that little photosynthesis is actually happening today. This situation will of change very quickly – in the space of a few hours.
The second image shows the beginnings of the ‘rugby socks’ – where the plant has emerged and then begins to produce chlorophyll and go green. The newly emerged portion of the leaf is still yellow.