Abstract
This paper investigated the growth and development of maize roots treated with different pH levels,nitrogen forms(ammonium and nitrate) and Ca2+ supply in nutrient solution.The results showed that with NO-3-N more lateral roots were observed and seedlings accumulated more biomass.The seedlings supplied NH+4-N as nitrogen nutrition had bigger average diameter of roots than that supplied NO-3-N.The reason of NH+4 toxity may be that NH+4 with high concentration replaced Ca2+ in cell membrane,and furthermore the structure of cell membrane was damaged.Adding calcium into the nutrient solution reduced the negative effects of H+and NH+4-N on the growth and development of maize roots.
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Claims 5
Claim · model-written summary
Nitrate nutrition was associated with more lateral roots in maize seedlings.
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results showed that with NO-3-N more lateral roots were observed and seedlings accumulated more biomass.”
t0“maize seedlings”
Claim · model-written summary
Nitrate nutrition increased seedling biomass.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results showed that with NO-3-N more lateral roots were observed and seedlings accumulated more biomass.”
t0“maize seedlings”
Claim · model-written summary
Ammonium-fed maize seedlings had larger average root diameter than nitrate-fed seedlings.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The seedlings supplied NH+4-N as nitrogen nutrition had bigger average diameter of roots than that supplied NO-3-N.”
t0“maize seedlings”
Claim · model-written summary
The authors propose that high ammonium concentration displaces calcium in cell membranes and damages membrane structure.
- Treatment
- NH+4 with high concentratione0
- Compound
- Ca2+e0
- Outcome
- structure of cell membrane was damagede0
- Qualifier
- may bee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The reason of NH+4 toxity may be that NH+4 with high concentration replaced Ca2+ in cell membrane,and furthermore the structure of cell membrane was damaged.”
t0“maize seedlings”
Claim · model-written summary
Adding calcium to nutrient solution reduced adverse effects of hydrogen ions and ammonium on maize root growth and development.
- Treatment
- Adding calcium into the nutrient solutione0
- Outcome
- negative effects of H+and NH+4-N on the growth and development of maize rootse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Adding calcium into the nutrient solution reduced the negative effects of H+and NH+4-N on the growth and development of maize roots.”
t0“maize seedlings”
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