Abstract
In order to evaluate the fresh weight, RWC, pigment content, total phenolics, proline and glycine betaine responses of maize inbred lines to osmotic stress, a factorial experiment was carried out under laboratory conditions with two maize inbred lines (B73 and MO17) and two osmotic stress levels induced by PEG (control and -0.6 MPa). Fresh weight significantly decreased under drought stress. On the basis of percent inhibition in fresh weight at the osmotic stress MO17 was ranked as tolerant (inhibition 45.30%), and B73 drought sensitive (inhibition more than 50%). Leaf relative water content (RWC) was significantly decreased in both inbred lines under osmotic stress. The pigment concentrations were substantially declined in both maize inbreds under osmotic stressed conditions. However, this reduction was less in B73 than MO17. Osmoitc stress declined the levels of total phenolics in both maize inbreds. On the other hand, the osmotic stress markedly enhanced the levels of proline and glycine betaine in both maize inbreds, but this was more pronounced in MO17. The present results showed that osmotic stress retards the growth and some biochemical attributes of maize inbreds. In conclusion, the level of proline and glycine betaine in maize could improve drought tolerance.
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Claims 11
Claim · model-written summary
Fresh weight decreased significantly under drought stress.
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fresh weight significantly decreased under drought stress.”
t0“maize seedlings”
Claim · model-written summary
MO17 was classified as tolerant based on 45.30% fresh weight inhibition.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MO17 was ranked as tolerant (inhibition 45.30%)”
t0“maize seedlings”
Claim · model-written summary
B73 was classified as drought sensitive with more than 50% inhibition.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“B73 drought sensitive (inhibition more than 50%)”
t0“maize seedlings”
Claim · model-written summary
Leaf relative water content decreased significantly in both inbred lines under osmotic stress.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Leaf relative water content (RWC) was significantly decreased in both inbred lines under osmotic stress.”
t0“maize seedlings”
Claim · model-written summary
Pigment concentrations declined in both maize inbreds under osmotic stress.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The pigment concentrations were substantially declined in both maize inbreds under osmotic stressed conditions.”
Claim · model-written summary
Pigment reduction was less in B73 than MO17.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“this reduction was less in B73 than MO17”
e1“pigment concentrations”
t0“maize seedlings”
Claim · model-written summary
Total phenolics declined in both maize inbreds under osmotic stress.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Osmoitc stress declined the levels of total phenolics in both maize inbreds.”
Claim · model-written summary
Proline levels increased under osmotic stress in both inbreds.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the osmotic stress markedly enhanced the levels of proline and glycine betaine in both maize inbreds”
Claim · model-written summary
Glycine betaine levels increased under osmotic stress in both inbreds.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the osmotic stress markedly enhanced the levels of proline and glycine betaine in both maize inbreds”
Claim · model-written summary
Osmolyte increases were more pronounced in MO17.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the osmotic stress markedly enhanced the levels of proline and glycine betaine in both maize inbreds, but this was more pronounced in MO17”
Claim · model-written summary
The authors conclude that proline and glycine betaine levels could improve drought tolerance.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the level of proline and glycine betaine in maize could improve drought tolerance”
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