In an experiment I found that the fresh weight of the root was less than that of the stem, however when I found the dry weight, the weight of the stem was less than that of the root. Why are these differences?
Dear Santiago,
the disproportions between fresh and dry root: shoot biomass could be caused by a "stress response" to some abiotic factor. In the case of green pepper, I would probably estimate it in terms of light factor (or temperature). The above-ground part of the young plants stretches abnormally (higher fresh weight) when there is a lack of light. This is one possible explanation...
Best regards,
BS
Dear professor Bozena Sera,
These were Capsicum annuum seedlings and their weight was evaluated 14 days after they germinated.
Thank you.
Dear Santiago,
the disproportions between fresh and dry root: shoot biomass could be caused by a "stress response" to some abiotic factor. In the case of green pepper, I would probably estimate it in terms of light factor (or temperature). The above-ground part of the young plants stretches abnormally (higher fresh weight) when there is a lack of light. This is one possible explanation...
Best regards,
BS
In my opinion, this is due to the differing physiological composition of the shoot versus the root tissue. Also, the roots may be suberized, while the shoot part of the plant is more succulent.
Almost all the plants have 75-80%: moisture.
Fresh weight is the weight of a plant when you harvest it. Say if you harvest a tulsi plant and weigh it as such in the balance.
Dry weight is you keep this plant for shade drying and weight it after 2weeks, 3 weeks, 4 weeks till there is no.more change( decrease ) in weight ( moisture free).
I think imbalanced fertilization might be the cause. Higher doses of nitrogen compared to phosphorous and potassium leads to tender growth of the seedlings which contain more water and less dry matter accumulation.
I think imbalanced fertilization might be the cause. Higher doses of nitrogen compared to phosphorous and potassium leads to tender growth of the seedlings which contain more water and less dry matter accumulation.
All plant biomass contains some water content in the tissues due to biological process. There is diffeerence always found in fresh weight and dry weight. Many exoitc plants are given expression different in fresh weight/dry weight. Plant conopy played major role in the evaporation on leaf area. Fresh weight Vs dry weight factor and components are given in the attached paper. Santiago Durán-Fernández
https://www.mdpi.com/1999-4907/10/3/256/pdf
Article Leaf Fresh Weight Versus Dry Weight: Which is Better for Des...
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