Physiological Quality of Swingle Citrumelo Seed after Refrigerated Storage of Fruits and Seeds

Marilia Morelli, Fernando Alves de Azevedo, Ana Julia Borim de Souza, Rodrigo Martinelli and Patrícia Marluci da Conceição
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Marilia Morelli: Centro de Citricultura Sylvio Moreira, Instituto Agronômico (IAC), Anhanguera Road, Km 158, Cordeirópolis 13490-970, SP, Brazil
Fernando Alves de Azevedo: Centro de Citricultura Sylvio Moreira, Instituto Agronômico (IAC), Anhanguera Road, Km 158, Cordeirópolis 13490-970, SP, Brazil
Ana Julia Borim de Souza: Centro de Citricultura Sylvio Moreira, Instituto Agronômico (IAC), Anhanguera Road, Km 158, Cordeirópolis 13490-970, SP, Brazil
Rodrigo Martinelli: Centro de Citricultura Sylvio Moreira, Instituto Agronômico (IAC), Anhanguera Road, Km 158, Cordeirópolis 13490-970, SP, Brazil
Patrícia Marluci da Conceição: Departamento de Desenvolvimento Rural, Centro de Ciências Agrárias, Universidade Federal de São Carlos, Anhanguera Road, Km 174, Araras 13600-970, SP, Brazil

Agriculture, 2021, vol. 11, issue 12, 1-12

Abstract: For citrus, there is no definition of the ideal fruit harvesting point for seed extraction. Some studies have shown the positive effect of postharvest refrigerated storage of fruits to obtain quality seeds. This study aimed to evaluate the influence of the fruit maturation stage on the germination of Swingle citrumelo (CS) seeds after the refrigerated storage of fruits and seeds. CS fruits were harvested at 180 days after anthesis (DAA); 210 DAA and 240 DAA. Fruits and seeds were stored in cold chamber for 0, 15, 30, and 45 days. Physicochemical analyses were performed on fruits (colour, soluble solids, acidity and ratio) and seeds (water content, germination, and emergence). Germination of seeds extracted from fruits harvested at 180, 210, and 240 DAA, without refrigerated storage, showed a positive correlation with colour index. The refrigerated storage of fruits and seeds extracted from fruits harvested at 210 DAA, increased the seed germination rate. Peel colour (IC) was correlated positively with the germination of Swingle citrumelo seeds. The results of this study revealed that the absence of refrigerated storage, harvesting Swingle citrumelo fruits, with ripe characteristics (end of harvest), results in a high seed germination rate. On the other hand, refrigerated storage of fruits and seeds extracted from fruits harvested at mid-harvest increases the seed germination rate.

Keywords: citrus; rootstock; propagation (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2021
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