Abstract
Field pea is a significant pulse crop globally, with one-third of the global population relying on it as a staple food. Nonetheless, due to shifting climate conditions and the occurrence of elevated temperatures, heat stress has emerged as a significant factor restraining its productivity. Therefore, the current research was carried out with the aim of formulating an effective approach to address heat stress. The field trial took place during rabi 2023-24 and rabi 2024-25 in the Department of Seed Science and Technology at Chandra Sekhar Azad University of Agriculture and Technology, Kanpur. 12 different Chemicals were used for the present study. Heat stress was found to have a significant influence on the seed quality parameters. Germination percentage and Vigour Index I (VG I), 100 seed weight, seedling length, seedling dry weight reduced significantly under late sown condition. Similar trend was observed for Vigour Index II. (VG II) Foliar sprays with different chemicals viz. Salicylic acid (400ppm), Thiourea (400ppm), Salicylic acid (800ppm), Thiourea (200ppm), Ascorbic acid (10ppm), KCL (1%) were carried out at vegetative (booting stage) and Anthesis stage. Seeds harvested from heat stressed environment showed a significant increase seed quality parameters when sprayed with various foliar sprays. The findings also indicated that spraying salicylic acid at 400ppm and Thiourea at 400ppm effectively enhances multiple seed quality attributes such as 100 seed weight, germination rate, and seedling height (cm). The germination of seeds and VG I and II also displayed upward trends. The use of thiourea notably increased soluble sugars and proline levels in leaves, likely preserving a longer duration of green area with elevated leaf chlorophyll, which ultimately improves seed quality traits and may enhance heat tolerance. Therefore, all foliar applications successfully alleviated heat stress effects; however, salicylic acid at 400ppm and Thiourea at 400ppm were identified as the most effective.
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Claims 9
Claim · model-written summary
Late sowing significantly reduced germination and Vigour Index I.
- Taxon
- Field peat0
- Treatment
- late sown conditione0
- Outcome
- Germination percentage and Vigour Index Ie0
- Direction
- reducede0
Not reportedComparator
Verbatim
e0“Germination percentage and Vigour Index I (VG I), 100 seed weight, seedling length, seedling dry weight reduced significantly under late sown condition.”
t0“Field pea”
Claim · model-written summary
Late sowing significantly reduced seed weight, seedling length and dry weight.
- Taxon
- Field peat0
- Treatment
- late sown conditione0
- Outcome
- 100 seed weight, seedling length, seedling dry weighte0
- Direction
- reducede0
Not reportedComparator
Verbatim
e0“100 seed weight, seedling length, seedling dry weight reduced significantly under late sown condition.”
t0“Field pea”
Claim · model-written summary
Vigour Index II showed a similar declining trend under heat stress.
Not reportedDirection
Verbatim
e0“Similar trend was observed for Vigour Index II. (VG II)”
t0“Field pea”
Claim · model-written summary
Foliar chemicals increased seed quality parameters under heat stress.
Not reportedComparator
Verbatim
e0“Seeds harvested from heat stressed environment showed a significant increase seed quality parameters when sprayed with various foliar sprays.”
t0“Field pea”
Claim · model-written summary
Salicylic acid at 400ppm improved seed weight, germination and seedling height.
- Taxon
- Field peat0
- Treatment
- salicylic acid at 400ppme0
- Outcome
- 100 seed weight, germination rate, and seedling heighte0
- Direction
- enhancese0
Not reportedComparator
Verbatim
e0“spraying salicylic acid at 400ppm and Thiourea at 400ppm effectively enhances multiple seed quality attributes such as 100 seed weight, germination rate, and seedling height (cm).”
t0“Field pea”
Claim · model-written summary
Thiourea at 400ppm improved seed weight, germination and seedling height.
- Taxon
- Field peat0
- Treatment
- Thiourea at 400ppme0
- Outcome
- 100 seed weight, germination rate, and seedling heighte0
- Direction
- enhancese0
Not reportedComparator
Verbatim
e0“spraying salicylic acid at 400ppm and Thiourea at 400ppm effectively enhances multiple seed quality attributes such as 100 seed weight, germination rate, and seedling height (cm).”
t0“Field pea”
Claim · model-written summary
Thiourea increased leaf soluble sugars and proline.
- Taxon
- Field peat0
- Organ / stage
- leavese0
- Treatment
- thioureae0
- Outcome
- soluble sugars and proline levelse0
- Direction
- increasede0
Not reportedComparator
Verbatim
e0“The use of thiourea notably increased soluble sugars and proline levels in leaves”
t0“Field pea”
Claim · model-written summary
The authors inferred thiourea may maintain green area and elevated chlorophyll to improve seed quality and heat tolerance.
Verbatim
e0“likely preserving a longer duration of green area with elevated leaf chlorophyll, which ultimately improves seed quality traits and may enhance heat tolerance.”
t0“Field pea”
e1“The use of thiourea”
Claim · model-written summary
The authors considered salicylic acid at 400ppm and thiourea at 400ppm the most effective foliar applications.
Verbatim
e0“salicylic acid at 400ppm and Thiourea at 400ppm were identified as the most effective.”
t0“Field pea”
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