Abstract
Many inbred lines of maize are unable to synthesize glycinebetaine (GB). The present study was conducted to assess the influence of exogenously applied GB on growth and photosynthetic attributes of maize (Zea mays L.). Two maize varieties were C-20 and C-77 (C stands for Comb). Exogenously applied different levels i.e. control (without spray), water spray, 50 or 100 mmol L of glycinebetaine had no increasing or decreasing effect on shoot length, shoot fresh and dry weights. Among different gas exchange attributes only stomatal conductance (gs) and transpiration rate (E) increased while photosynthetic rate (A), sub-stomatal CO2 cone. (Gj) and water use efficiency (WUE) were unaffected by foliar spray of GB. Chlorophyll a was high at 100 mM of GB for C-20, whereas in case of C-77 water spray gave maximum value. There was no effect of GB on chlorophyll b.
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Claims 6
Claim · model-written summary
Glycinebetaine spray did not change maize shoot length or fresh and dry weights.
- Treatment
- 50 or 100 mmol L of glycinebetainee0
- Outcome
- shoot length, shoot fresh and dry weightse0
- Direction
- no increasing or decreasing effecte0
- Comparator
- control (without spray)e0
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Exogenously applied different levels i.e. control (without spray), water spray, 50 or 100 mmol L of glycinebetaine had no increasing or decreasing effect on shoot length, shoot fresh and dry weights.”
e1“maize (Zea mays L.)”
Claim · model-written summary
Foliar glycinebetaine increased stomatal conductance and transpiration rate.
- Treatment
- foliar spray of GBe0
- Outcome
- stomatal conductance (gs) and transpiration rate (E)e0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Among different gas exchange attributes only stomatal conductance (gs) and transpiration rate (E) increased while photosynthetic rate (A), sub-stomatal CO2 cone. (Gj) and water use efficiency (WUE) were unaffected by foliar spray of GB.”
e1“maize (Zea mays L.)”
Claim · model-written summary
Foliar glycinebetaine left photosynthetic rate, sub-stomatal CO2 concentration and water use efficiency unaffected.
- Treatment
- foliar spray of GBe0
- Outcome
- photosynthetic rate (A), sub-stomatal CO2 cone. (Gj) and water use efficiency (WUE)e0
- Direction
- unaffectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Among different gas exchange attributes only stomatal conductance (gs) and transpiration rate (E) increased while photosynthetic rate (A), sub-stomatal CO2 cone. (Gj) and water use efficiency (WUE) were unaffected by foliar spray of GB.”
e1“maize (Zea mays L.)”
Claim · model-written summary
Chlorophyll a was high at 100 mM glycinebetaine in C-20.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chlorophyll a was high at 100 mM of GB for C-20, whereas in case of C-77 water spray gave maximum value.”
e1“maize (Zea mays L.)”
Claim · model-written summary
Water spray gave maximum chlorophyll a in C-77.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chlorophyll a was high at 100 mM of GB for C-20, whereas in case of C-77 water spray gave maximum value.”
e1“maize (Zea mays L.)”
Claim · model-written summary
Glycinebetaine had no effect on chlorophyll b.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was no effect of GB on chlorophyll b.”
e1“maize (Zea mays L.)”
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