Trait-Dependent and Site-Specific Effects of Foliar IAA and Kinetin on Two Chickpea Varieties Grown Under Contrasting Conditions
- 1Laboratory of Natural Resources and Management of Sensitive Environments, Oum El Bouaghi University, Algeria
Abstract
Chickpea (Cicer arietinum L.) yield in Algeria still falls short of domestic demand, and low-cost agronomic tools such as plant growth regulators are one of the few levers producers can adjust without heavy investment. We tested the separate and combined effects of foliar-applied indole-3-acetic acid (IAA) and kinetin (0, 10, and 20 mg/L) on two chickpea varieties, FLIP 84-92 and ILC 32-79, grown side by side in the field at the ITGC station of El Khroub and in pots at the Institute of Natural Sciences of Oum El Bouaghi during the 2024/2025 season. Nine hormone treatments were applied to each variety at each site, with three replicates apiece. No single treatment came out on top across the board. A20+K20 gave the largest pot leaf area at both sampling dates (5.67 and 7.20 cm2) and the highest field dry matter weight (95.21 g), yet A10+K10 produced the largest field leaf area after the first spray (16.47 cm2) and the highest pot dry matter weight (6.12 g). Kinetin alone at 20 mg/L (K20) gave the most field pods (21.28) and the most field leaves after the first spray (115.41), while A10+K20 gave the heaviest pot grains (100-grain weight of 21.16 g). Field and pot means are not directly comparable given how different the two growing environments and sampling routines were. Between varieties, FLIP 84-92 germinated better (86% vs. 83%) and produced heavier grains, while ILC 32-79 grew taller stems. Because the manuscript we worked from supplied only treatment means, with no replicate-level data or variance estimates, we report these as descriptive numerical differences rather than statistically tested effects. Read that way, the pattern that emerges is that IAA and kinetin responses are trait- and environment-specific rather than uniformly additive, and a properly replicated factorial analysis will be needed before any interaction or synergy between the two hormones can be claimed.
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BibTeX
@misc{kebaili2026traitdependent,
title = {{Trait-Dependent and Site-Specific Effects of Foliar IAA and Kinetin on Two Chickpea Varieties Grown Under Contrasting Conditions}},
author = {Z. Kebaili and A. Yahia and A. Boultif and A. Benyamina and W. Azabi and S. Remache and A. Zellagui and M. Benahmed and n. gherraf},
howpublished = {bioRxiv},
year = {2026},
month = aug,
doi = {10.64898/2026.08.29.747965},
url = {https://www.biorxiv.org/content/10.64898/2026.08.29.747965v1},
note = {CC BY},
}
RIS
TY - UNPB
TI - Trait-Dependent and Site-Specific Effects of Foliar IAA and Kinetin on Two Chickpea Varieties Grown Under Contrasting Conditions
AU - Z. Kebaili
AU - A. Yahia
AU - A. Boultif
AU - A. Benyamina
AU - W. Azabi
AU - S. Remache
AU - A. Zellagui
AU - M. Benahmed
AU - n. gherraf
PY - 2026
DA - 2026/08/29
PB - bioRxiv
DO - 10.64898/2026.08.29.747965
UR - https://www.biorxiv.org/content/10.64898/2026.08.29.747965v1
AB - Chickpea (Cicer arietinum L.) yield in Algeria still falls short of domestic demand, and low-cost agronomic tools such as plant growth regulators are one of the few levers producers can adjust without heavy investment. We tested the separate and combined effects of foliar-applied indole-3-acetic acid (IAA) and kinetin (0, 10, and 20 mg/L) on two chickpea varieties, FLIP 84-92 and ILC 32-79, grown side by side in the field at the ITGC station of El Khroub and in pots at the Institute of Natural Sciences of Oum El Bouaghi during the 2024/2025 season. Nine hormone treatments were applied to each variety at each site, with three replicates apiece. No single treatment came out on top across the board. A20+K20 gave the largest pot leaf area at both sampling dates (5.67 and 7.20 cm2) and the highest field dry matter weight (95.21 g), yet A10+K10 produced the largest field leaf area after the first spray (16.47 cm2) and the highest pot dry matter weight (6.12 g). Kinetin alone at 20 mg/L (K20) gave the most field pods (21.28) and the most field leaves after the first spray (115.41), while A10+K20 gave the heaviest pot grains (100-grain weight of 21.16 g). Field and pot means are not directly comparable given how different the two growing environments and sampling routines were. Between varieties, FLIP 84-92 germinated better (86% vs. 83%) and produced heavier grains, while ILC 32-79 grew taller stems. Because the manuscript we worked from supplied only treatment means, with no replicate-level data or variance estimates, we report these as descriptive numerical differences rather than statistically tested effects. Read that way, the pattern that emerges is that IAA and kinetin responses are trait- and environment-specific rather than uniformly additive, and a properly replicated factorial analysis will be needed before any interaction or synergy between the two hormones can be claimed.
ER -