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Improving the fruit quality of Sichuan-pepper 'Dahongpao' by optimized GA.sub.3 treatments
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Improving the fruit quality of Sichuan-pepper 'Dahongpao' by optimized GA.sub.3 treatments
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Journal Article
Improving the fruit quality of Sichuan-pepper 'Dahongpao' by optimized GA.sub.3 treatments
2023
Overview
To improve fruit quality, application of plant growth regulators as gibberellic acid (G[A.sub.3]) has emerged as a significant cultivation and management method. In the study, different concentrations of (G[A.sub.3]) solutions (25, 50, 75, and 100 mg [L.sup.-1]) were sprayed on Sichuan-pepper (Zanthoxylum bungeanum Maxim.; Rutaceae) 'Dahongpao' trees at fruit setting and enlargement stages. Spraying 75 mg [L.sup.-1] G[A.sub.3] was most effective at both stages: vertical diameter, transverse diameter, hundred-grain weight, and number of oil sacs on the peel increased by 12%, 5%, 12%, and 42%, respectively, at fruit setting stage; and the aforementioned indexes increased by 14%, 11%, 12%, and 35%, respectively at fruit enlargement stage. Spraying 100 mg [L.sup.-1] G[A.sub.3] at fruit setting stage, the content of total volatile oil, pungent compounds, non-volatile ether extracts, and total flavonoids significantly increased by 28%, 6%, 10%, and 3%, respectively; spraying 75 mg [L.sup.-1] G[A.sub.3] at fruit enlargement stage, the indexes increased by 33%, 27%, 13%, and 11%, respectively. The comprehensive evaluation results based on Technique for Order Preference by Similarity to an Ideal Solution (TOPSIS) indicated that G[A.sub.3] treatment in a concentration of 75 mg [L.sup.-1] could improve the quality of 'Dahongpao' fruits, thereby providing novel insights for the cultivation and management of such plant. Although spraying G[A.sub.3] may change fruit quality of Z. bungeanum, influencing mechanism of G[A.sub.3] treatments on the external and internal quality of Z. bungeanum fruits remains unclear. Key words: 'Dahongpao', external quality, gibberellin, internal quality, Sichuan-pepper, TOPSIS, Zanthoxylum bungeanum.
Publisher
Instituto de Investigaciones Agropecuarias
Subject
