Abstract
Salinization of cultivated land is increasing globally due to saline water irrigation and inherent soil salinity. A considerable variation in salinity tolerance of maize hybrids was reported widely hence selection of tolerant maize hybrids to saline water irrigation is of great significance in utilising saline water for irrigation. The present study was conducted to identify the maize hybrids tolerant to saline water irrigation under green house condition. Six maize hybrids were chosen and irrigated with saline water having varied inherent salinity levels (0.6, 3.2, 4.8, 6.7 and 8.9 dS m-1 ) and grown on Alfisol for 30 days. Plant growth attributes and gas exchange parameters were recorded on 30 day after sowing and significant variations were observed among the genotypes for different salinity levels. Increasing levels of irrigation water salinity decreased the plant growth attributes, photosynthetic activity and dry matter production of all maize hybrids. However, TNAU Maize hybrid CO 6 registered higher dry matter production and photosynthetic activity with better stress tolerance index (76.8%). All the maize hybrids tolerated the irrigation water salinity upto 3.2 dS m-1 while TNAU maize hybrid CO 6 thrives well even upto 4.8 dS m-1 , which indicated its efficiency to tolerate water salinity.
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Claims 4
Claim · model-written summary
Increasing irrigation salinity decreased growth attributes, photosynthesis and dry matter production in all hybrids.
- Treatment
- Increasing levels of irrigation water salinitye0
- Outcome
- plant growth attributes, photosynthetic activity and dry matter productione0
- Direction
- decreasede0
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing levels of irrigation water salinity decreased the plant growth attributes, photosynthetic activity and dry matter production of all maize hybrids”
Claim · model-written summary
TNAU Maize hybrid CO 6 had higher dry matter production and photosynthetic activity and a 76.8% stress tolerance index.
- Material
- TNAU Maize hybrid CO 6e0
- Outcome
- dry matter production and photosynthetic activitye0
- Direction
- highere0
- Value
- 76.8%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“TNAU Maize hybrid CO 6 registered higher dry matter production and photosynthetic activity with better stress tolerance index (76.8%)”
Claim · model-written summary
All hybrids tolerated salinity up to 3.2 dS m-1.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All the maize hybrids tolerated the irrigation water salinity upto 3.2 dS m-1”
Claim · model-written summary
TNAU maize hybrid CO 6 tolerated salinity up to 4.8 dS m-1.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“TNAU maize hybrid CO 6 thrives well even upto 4.8 dS m-1”
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