 I'm Julia Henry, I'm drought physiologist here at Erie and these two rain out shelters are part of the experiments we're doing to characterize the physiological response of lines with major drought QTLs. So as you can see there are two shelters and we've had them for about a year and a half and they're really useful because here in Los Baños sometimes it's difficult to get a good drought treatment since it rains pretty often but what we do is if it's going to rain we just cover all of the plants by rolling the rain out shelter over them and that's why you can see the soil is really dry here compared to other sites at Erie because it hasn't received any rainfall for over one month. The experiments we have four different experiments here, reading program and right now is IR-64 adesal lines so we have three lines that are plus QTL and three lines that are minus QTL and our job is to figure out what is the physiological mechanism that makes the plus QTL lines do so well under drought compared to the minus QTL lines and actually this experiment we've made a lot of progress on in the past six months we know that there are some route traits that are contributing to improved water uptake of the plus QTL lines. The experiment behind us is Aposwana lines and that one we haven't made as much progress on in terms of characterization we're still trying to figure that one out. Other two experiments behind you and the other shelter are both 22 Swarna and in back is N22 IR-64 measurements we're making so you can see this is not a big experimental area our experiments are pretty small compared to what you'll see in the breeders fields but the reason is because we do a lot of very intense measurements so first the first thing I'll tell you about is so this is Trom he's our assistant scientist and a lot of the measurements we do here. This rack allows us to make measurements in every plot experiment so we don't make footprints so that measures reflectance and we can do that measurement as often as we want it's non-destructive so we could measure the plants every day multiple times a day to look for differences among genotypes and the other instrument up high is an infrared camera so when the when the pole is on the other side of the plot it takes images of the rain out shelter behind us and we use the infrared camera to look at canopy temperature and that indicates drought response because plants that can maintain a cool temperature when the soil is dry tend to have a better yield and have better water uptake in these plots actually we have four different types you can see this one is a 10-seometer tells you about soil water potential these kind of instruments are measuring volumetric soil moisture nice because they make measurements every minute they're wireless we have a repeater on that pole that sends the signal back to our office in the middle of the year so we're looking at how the soil moisture is changing with different times of day and we have water table tubes and another type of volumetric soil moisture sensor so yeah I guess for us because there's so many different types of drought that's one thing we really focus on is characterizing what type of drought is occurring so we can understand the response of these genotypes better so that's just a brief introduction and if anyone has any questions I'd be happy to take them no we were targeting reproductive stage so we let them grow for about one month after transplanting and actually we were targeting more that experiment because it has a longer time to flowering has swarna as one of the parent lines so I think we let them even go maybe five weeks after transplanting before we drained this plot that one we drained about 10 days earlier and we've already rewattered it once from the transpiration um actually I don't understand your first question completely maybe you can explain that's not something I've been looking at but I agree that the relative humidity is something that probably is a factor in terms of drought response and the plant's ability to cool itself and we're here doing experiments in the Philippines where it's very humid and in some cases our target environment is very dry so that's why we're trying to also increase the amount of activities we're doing in target environments with drier air conditions because yeah it could make a big difference