Abstract
Salt stress strongly affects on plant growth and development, especially maize plant, which is reported as a salt sensitive species. The salt tolerant identification in the large genetic resources and breeding population is a profitable research topic for solving the salinity problem. Two maize cultivars, viz., sweet (Zea mays L. cv. Saccharata) and waxy (Z. mays L. cv. Ceratina) seedlings were treated with 0 (control), 100, 200, 300 or 400 mM NaCl. Osmotic potential (ψs) or water availability in the culture media was limited, relating to increase in the NaCl concentrations of the growth medium. The chlorophyll degradation in the salt stressed seedlings was positively related to ψs in the culture media. Chlorophyll a (Chla), chlorophyll b (Chlb) and total chlorophyll (TC) concentrations in the salt stressed leaves significantly dropped, depending on salt treatments except total carotenoids (Cx+c) content which was decreased by the factors of salt concentrations, cultivars and their interaction. Proline in the salt stressed leaves accumulated to 600.9 μmol g-1FW, especially in sweet maize treated with 400 mM NaCl. The chlorophyll degradation in both cultivars was progressively correlated with maximum quantum yield of PSII (Fv/Fm) as well as the photon yield of PSII (ΦPSII) was related to net photosynthetic rate (Pn), leading to growth reduction. Chlorophyll a fluorescence parameters, Fv/Fm, ΦPSII and photochemical quenching (qP), in the leaf tissues were reduced, while non-photochemical quenching (NPQ) was exhibited. The biochemical, physiological and morphological changes in salt stressed maize cultivars were subjected to K-Means Cluster in SPSS software and classified the two cultivars as waxy salt tolerant and sweet salt sensitive.
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Claims 10
Claim · model-written summary
Chlorophyll degradation in salt-stressed maize seedlings was positively related to osmotic potential in the culture media.
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“IN TWO MAIZE CULTIVARS”
e1“The chlorophyll degradation in the salt stressed seedlings was positively related to ψs in the culture media”
Claim · model-written summary
Salt treatments significantly decreased chlorophyll a, chlorophyll b and total chlorophyll concentrations in maize leaves.
- Organ / stage
- leavese1
- Treatment
- salt treatmentse1
- Outcome
- Chlorophyll a (Chla), chlorophyll b (Chlb) and total chlorophyll (TC) concentrationse1
- Direction
- droppede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“IN TWO MAIZE CULTIVARS”
e1“Chlorophyll a (Chla), chlorophyll b (Chlb) and total chlorophyll (TC) concentrations in the salt stressed leaves significantly dropped, depending on salt treatments”
Claim · model-written summary
Salt concentrations, cultivars and their interaction decreased total carotenoid content in maize.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“IN TWO MAIZE CULTIVARS”
e1“total carotenoids (Cx+c) content which was decreased by the factors of salt concentrations, cultivars and their interaction”
Claim · model-written summary
Proline accumulated to 600.9 μmol g-1FW in salt-stressed leaves, especially in sweet maize treated with 400 mM NaCl.
- Material
- sweet maizee1
- Organ / stage
- leavese1
- Treatment
- 400 mM NaCle1
- Outcome
- Prolinee1
- Direction
- accumulatede1
- Value
- 600.9 μmol g-1FWe1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Proline in the salt stressed leaves accumulated to 600.9 μmol g-1FW, especially in sweet maize treated with 400 mM NaCl”
Claim · model-written summary
Chlorophyll degradation was progressively correlated with the maximum quantum yield of PSII (Fv/Fm) in both maize cultivars.
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“IN TWO MAIZE CULTIVARS”
e1“The chlorophyll degradation in both cultivars was progressively correlated with maximum quantum yield of PSII (Fv/Fm)”
Claim · model-written summary
Photon yield of PSII (ΦPSII) was related to net photosynthetic rate in maize, leading to growth reduction.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“IN TWO MAIZE CULTIVARS”
e1“the photon yield of PSII (ΦPSII) was related to net photosynthetic rate (Pn), leading to growth reduction”
Claim · model-written summary
Fv/Fm, ΦPSII and qP were reduced in the leaf tissues of salt-stressed maize.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“IN TWO MAIZE CULTIVARS”
e1“Chlorophyll a fluorescence parameters, Fv/Fm, ΦPSII and photochemical quenching (qP), in the leaf tissues were reduced”
Claim · model-written summary
Non-photochemical quenching (NPQ) was exhibited in the salt-stressed maize leaves.
- Outcome
- non-photochemical quenching (NPQ)e2
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“IN TWO MAIZE CULTIVARS”
e2“while non-photochemical quenching (NPQ) was exhibited”
Claim · model-written summary
The waxy maize cultivar was classified as salt tolerant.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“IN TWO MAIZE CULTIVARS”
e3“classified the two cultivars as waxy salt tolerant and sweet salt sensitive”
Claim · model-written summary
The sweet maize cultivar was classified as salt sensitive.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“IN TWO MAIZE CULTIVARS”
e3“classified the two cultivars as waxy salt tolerant and sweet salt sensitive”
The same questions in other papers
salinity · physiology: pigments · Zea mays (maize)Results differ
56 papers in the same direction as this paper · 1 in the opposite direction
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See all 58 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.