{'fraction_non_alphanumeric': 0.048145738451528954, 'fraction_numerical': 0.024072869225764477, 'mean_word_length': 5.0078125, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
PLANT GROWTH REGULATORS AND SIMULATED HAILDAMAGE IMPROVE ROSE-GERANIUM (Pelargonium graveolens L’Hér.) LEAF MINERAL STATUS AND PHENOLIC COMPOSITION

This study aimed to evaluate the effects of plant growth regulators (PGRs) on the leaf mineral status, and the phenolic compounds of rose geranium with stimulated hail damage. This experiment was conducted in a 3 x 4 factorial treatment design laid out in a randomized complete block design. The interaction between simulated hail damage and PGRs significantly affected the C, N, P, and Ca content, as well as the C:N ratio. A principal component analysis was performed to increase the interpretability of leaf mineral data. PC1 and PC2 accounted for 73.01% of the total variance, confirming that hail damaged rose geranium plants accumulate N, P, K, Mg, Ca, Mn, and Na when treated with high levels of PGRs (gibberellic acid-2.55 mg/kg, brassinosteroids-1.02 mg/kg, and cytokinins-0.05 mg/kg, and the gibberellic acid-3.83 mg/kg, brassinosteroids-1.53 mg/kg, and cytokinins-0.075 mg/kg). Citric acid, coumaroyl tyrosine, 5-Heptadecylresorcinol and kaempferol-O-hexoside-O-deoxy-hexose were among the phenolic compounds affected by simulated hail damage. PC1 and PC2 accounted for most variability (41.30%) of the phenolic compounds, confirming that severely hail-damaged plants (100%) accumulate most of the phenolics. Post-hail damage recovery strategies using PGRs may be an alternative strategy for improving leaf mineral status, assisting the plants to recover lost herbage material.