Impact of water deficit stress on traits influencing the drought tolerance and yield of maize (Zea mays L.) genotypes

Water deficit stress is one of the major abiotic stresses that severely affects the plant performance and production especially when it occurs during the reproductive phase. That drought research is an ongoing approach as new breeding lines development is a continuous process. Therefore, a field exp...

Full description

Saved in:
Bibliographic Details
Published in:Indian journal of plant physiology 2022-03, Vol.27 (1), p.109-118
Main Authors: Sathish, P., Vanaja, M., Jyothi Lakshmi, N., Sarkar, B., Vijay Kumar, G., Vagheera, P., Mohan, C. H., Maheswari, M.
Format: Article
Language:English
Subjects:
Biomedical and Life Sciences
Cell Biology
Cell membranes
Corn
Crop yield
Drought resistance
Genotypes
Life Sciences
Malondialdehyde
Original Article
Photosynthesis
Plant Biochemistry
Plant Ecology
Plant Genetics and Genomics
Plant Physiology
Plant Sciences
Proline
Stomata
Stomatal conductance
Stress
Transpiration
Water deficit
Well water
Zea mays
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Water deficit stress is one of the major abiotic stresses that severely affects the plant performance and production especially when it occurs during the reproductive phase. That drought research is an ongoing approach as new breeding lines development is a continuous process. Therefore, a field experiment was conducted with recently developed 12 maize ( Zea mays L.) genotypes under Well Water (WW) and Water Deficit stress (WDS) conditions to quantify the impact of WD stress on phenological, physio-biochemical and yield parameters. The results showed that WD stress significantly altered the Anthesis Silking Interval (ASI) among the genotypes but had no effect on the genotypes DTL-4–1 and Harsha. A significant decrease in net photosynthetic rate, stomatal conductance, transpiration rate and WUE was recorded with WD stress. Accumulation of proline under WD stress was significantly higher with DTL-4–1 and Harsha with a lower malondialdehyde (MDA) content and increased activity of SOD thereby maintained better cell membrane stability (CMS). Biomass and grain yield components were also significantly impacted by the water deficit stress. Among the maize genotypes, DTL-4, DTL-4–1 and Harsha showed better Stress tolerance index (STI). Under WD stress, grain yield showed significant positive association with proline, CMS, kernel number while negative association with MDA and ASI, indicating importance of these traits in imparting WD stress tolerance in maize.
ISSN:2662-253X
0019-5502
2662-2548
0974-0252
DOI:10.1007/s40502-021-00640-x