Jha Uday Chand, Warburton Marilyn, Nayyar Harsh, Shafi Sadiah, Ciampitti Ignacio A, Udgata Ashis Ranjan, Siddique Kadambot H M, Vara Prasad P V
Indian Council for Agricultural Research (ICAR) - Indian Institute of Pulses Research (IIPR), Kanpur, Uttar Pradesh, India.
Feed the Future Innovation Lab for Collaborative Research on Sustainable Intensification, Kansas State University, Manhattan, Kansas, United States of America.
PLoS One. 2025 Aug 22;20(8):e0330230. doi: 10.1371/journal.pone.0330230. eCollection 2025.
Increasing occurrences of episodic heat stress significantly affect crop quality traits, including those of chickpea (Cicer arietinum L.). The adverse effectof heat stress on seed quality was evaluated by cultivating eight chickpea genotypes under non-stress and heat stress conditions, with temperatures set at 25/15°C and 35/20°C, respectively. The genotypes exhibited notable genetic variations in "seed carbon (C, %), protein (%), phosphorus (P, %), potassium (K, %), magnesium (Mg, %), sulfur (S, %), and manganese (Mn, ppm)" concentrations under both conditions. However, no significant variations were observed for seed (S%), seed iron (Fe, ppm), and zinc (Zn, ppm), concentrations under NS conditions or seed copper (Cu, ppm) under heat stress conditions. The genotype (G) × temperature (T) interaction was significant for all traits except for seed K. Correlation analysis revealed positive associations between seed C and protein, seed Mg and P, and seed protein and S under non-stress (NS) conditions. Under heat stress, significant correlations were observed between seed protein and Mg, and seed protein and P. In contrast, significant negative correlations were observed between seed Ca and K under NS conditions and seed Ca and K and seed Fe and Cu under heat stress conditions. The adverse effects of heat stress on nutritional quality and seed yield underscore the necessity for continued research into developing heat-tolerant chickpea cultivars with enhanced seed nutritional traits.
间歇性热应激事件的不断增加显著影响作物品质性状，包括鹰嘴豆（Cicer arietinum L.）的品质性状。通过在非胁迫和热胁迫条件下种植8种鹰嘴豆基因型来评估热胁迫对种子品质的不利影响，温度分别设置为25/15°C和35/20°C。在这两种条件下，这些基因型在“种子碳（C，%）、蛋白质（%）、磷（P，%）、钾（K，%）、镁（Mg，%）、硫（S，%）和锰（Mn，ppm）”浓度方面表现出显著的遗传变异。然而，在非胁迫条件下，种子（S%）、种子铁（Fe，ppm）和锌（Zn，ppm）的浓度以及在热胁迫条件下种子铜（Cu，ppm）的浓度均未观察到显著变化。除种子钾外，基因型（G）×温度（T）相互作用对所有性状均具有显著影响。相关性分析表明，在非胁迫（NS）条件下，种子碳与蛋白质、种子镁与磷以及种子蛋白质与硫之间呈正相关。在热胁迫下，观察到种子蛋白质与镁以及种子蛋白质与磷之间存在显著相关性。相反，在非胁迫条件下，种子钙与钾之间以及在热胁迫条件下种子钙与钾、种子铁与铜之间存在显著负相关。热胁迫对营养品质和种子产量的不利影响凸显了继续开展研究以培育具有增强种子营养性状的耐热鹰嘴豆品种的必要性。
