Abstract
In order to assess as to whether traits related to plant photosynthetic capacity such as chlorophyll fluorescence and net CO2 assimilation rate could be used as indicators for drought tolerance in maize, 5 synthetic and 2 hybrids were subjected to PEG-induced water stress for 3 weeks. Although the growth of all maize cultivars was significantly reduced by PEG-induced water stress, they differed significantly in producing shoot biomass under water stress conditions. However, cv. Sahiwal-2002 was higher in growth under water stress conditions. The photosynthetic capacity (A) of all maize cultivars was also reduced under water deficit conditions. Since, there was a positive correlation between biomass production and net CO2 assimilation rate so photosynthetic capacity could be used as a potential selection criterion for drought tolerance in maize. In contrast no such relationship of drought tolerance of the cultivars with photosystem-II efficiency measured as Fv/Fm. Thus, it did not prove to be a viable criterion for drought tolerance in maize.
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Claims 6
Claim · model-written summary
PEG-induced water stress significantly reduced growth of all maize cultivars.
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“growth of all maize cultivars was significantly reduced by PEG-induced water stress”
Claim · model-written summary
Maize cultivars differed significantly in shoot biomass under water stress.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“they differed significantly in producing shoot biomass under water stress conditions”
e1“all maize cultivars was significantly reduced”
Claim · model-written summary
Sahiwal-2002 had higher growth under water stress.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cv. Sahiwal-2002 was higher in growth under water stress conditions”
e1“all maize cultivars was significantly reduced”
Claim · model-written summary
Water deficit reduced photosynthetic capacity in all maize cultivars.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The photosynthetic capacity (A) of all maize cultivars was also reduced under water deficit conditions.”
Claim · model-written summary
Photosynthetic capacity could be used as a selection criterion for maize drought tolerance.
- Outcome
- potential selection criterion for drought tolerancee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“photosynthetic capacity could be used as a potential selection criterion for drought tolerance in maize”
Claim · model-written summary
Fv/Fm was not a viable criterion for maize drought tolerance.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it did not prove to be a viable criterion for drought tolerance in maize”
e1“photosystem-II efficiency measured as Fv/Fm”
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