Abstract
Abstract Fifteen million farmers in India engaged in Maize cultivation. India would require 45 MMT of Maize by 2022. But, only 15% of cultivated area of maize is under irrigation and water shortage has been a challenge for sustainability of maize production. Water deficit stress (WDS) during pre-flowering and grain filling stages massively affects the plant performance due to imprecise traits function. Thus, the effect of WDS on non-drought tolerant (NDT) and drought tolerant (DT) maize lines were investigated. WDS increased the flowering days, days to maturity, anthesis silk interval, decreased the leaf number, abnormal expression of secondary stress responsive traits, loss of normal root architecture which overall lead to a reduction in GY/ha. WDS at flowering and grain filling stage leads to significant yield penalty especially in NDT lines than DT lines. The yield penalty was ranged from 34.28 to 66.15% in NDT and 38.48 to 55.95% in DT lines due to WDS. Using multiple statistics, traits which improve WDS tolerance in maize were identified viz; number of leaves, number of stomata on lower surface of leaf, leaf angle at ear forming node internodal length between 3 rd and 4 th leaf from top, flag leaf length, flag leaf width, ear per plants, leaf senescence, pollen stainability, root fresh weight and root length. These traits would help in trait specific breeding in maize for WDS tolerance.
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Claims 8
Claim · model-written summary
Water deficit stress increased flowering days, days to maturity and anthesis silk interval in maize.
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Impact of water deficit stress in maize”
e0“WDS increased the flowering days, days to maturity, anthesis silk interval, decreased the leaf number, abnormal expression of secondary stress responsive traits, loss of normal root architecture which overall lead to a reduction in GY/ha”
Claim · model-written summary
Water deficit stress decreased leaf number in maize.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Impact of water deficit stress in maize”
e0“WDS increased the flowering days, days to maturity, anthesis silk interval, decreased the leaf number, abnormal expression of secondary stress responsive traits, loss of normal root architecture which overall lead to a reduction in GY/ha”
Claim · model-written summary
Water deficit stress caused loss of normal root architecture in maize.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Impact of water deficit stress in maize”
e0“WDS increased the flowering days, days to maturity, anthesis silk interval, decreased the leaf number, abnormal expression of secondary stress responsive traits, loss of normal root architecture which overall lead to a reduction in GY/ha”
Claim · model-written summary
Water deficit stress reduced grain yield per hectare in maize.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Impact of water deficit stress in maize”
e0“WDS increased the flowering days, days to maturity, anthesis silk interval, decreased the leaf number, abnormal expression of secondary stress responsive traits, loss of normal root architecture which overall lead to a reduction in GY/ha”
Claim · model-written summary
Water deficit stress caused a 34.28 to 66.15% yield penalty in non-drought tolerant maize lines.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Impact of water deficit stress in maize”
e1“The yield penalty was ranged from 34.28 to 66.15% in NDT and 38.48 to 55.95% in DT lines due to WDS”
Claim · model-written summary
Water deficit stress caused a 38.48 to 55.95% yield penalty in drought tolerant maize lines.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Impact of water deficit stress in maize”
e1“The yield penalty was ranged from 34.28 to 66.15% in NDT and 38.48 to 55.95% in DT lines due to WDS”
Claim · model-written summary
Water deficit stress at flowering and grain filling caused a significant yield penalty, larger in NDT lines than in DT lines.
- Material
- NDT linese2
- Treatment
- WDS at flowering and grain filling stagee2
- Outcome
- yield penaltye2
- Direction
- higherinferrede2
- Comparator
- DT linese2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Impact of water deficit stress in maize”
e2“WDS at flowering and grain filling stage leads to significant yield penalty especially in NDT lines than DT lines”
Claim · model-written summary
Multiple statistics identified traits that improve water deficit stress tolerance in maize.
- Outcome
- traits which improve WDS tolerancee3
- Qualifier
- number of leaves, number of stomata on lower surface of leaf, leaf angle at ear forming node internodal length between 3 rd and 4 th leaf from top, flag leaf length, flag leaf width, ear per plants, leaf senescence, pollen stainability, root fresh weight and root lengthe3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Impact of water deficit stress in maize”
e3“Using multiple statistics, traits which improve WDS tolerance in maize were identified viz; number of leaves, number of stomata on lower surface of leaf, leaf angle at ear forming node internodal length between 3 rd and 4 th leaf from top, flag leaf length, flag leaf width, ear per plants, leaf senescence, pollen stainability, root fresh weight and root length”
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