Barley SAC help for a friend

[jenerator]

hey there, my friend needs help on her SAC. Since im not doing the same SAC, i cant help her with confidence. SO shes doing a sac on genetic barley seeds and needs to write a limitation. She can't think of any because 200 genetic barley seeds for a sample size is appropriate and time was not a limiting factor as she had two weeks to grow them. What could be a limitation and how could it improved?

Also, if you have done this SAC before any tips?

[Kaille]

is this the prac about the pigment production in barley plants?

[Russ]

Post some details about what her experiment was, otherwise we're shooting in the dark.

Did she have a control group of non GM barley seeds, grown under the same conditions? Additionally, did she have a control group of the current "best" or most popular GM seed in the market to measure whether this new one was a significant improvement?

[jenerator]

@kaille- yerh its on the pigmentation in barley controlled by a single gene
@ russ- the prac used genetic barley seeds, so i guess they were all grown in the same conditions. There was no control group cause everyone used the same kind. Maybe that could be a limitation?!

Her workbook said (heinemann biol 2) "The genetic barley used in this experiment is the result of a cross between plants heterozygous for the gene locus in question"

[Kaille]

Im not sure if its exactly the same as the one i did, but if the plants needed to grow (germinate) you could say the amount of light they were exposed to was a limitation? some would have had more, some would have had less depending on the position they were situated from the light.

hope my very vague answer helps haha