Effects of Different Citrus Rootstocks on Growth, Yield, Quality and Granulation of 'Hamlin' Orange in Oman

Al-Hosni, A.S.; Mustafa, S.; Al-Busaidi, Khair Tuwair Said; Al-Jabri, M.; Al-Azri, H.

doi:10.17660/actahortic.2011.903.78

Cited by 6 publications

(2 citation statements)

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“…'Kinnow' mandarin gave a higher granulation incidence when grafted onto 'Volkamer' lemon than onto rootstocks 'Rough' lemon and three citrange ones. [122] Nevertheless, it is noteworthy that besides the influence of rootstock, the incidence of this disorder depended on other factors like cultivar, agroclimatic conditions and genetic differences. [120] Volatile Compounds Essential oil (EO) is the volatile liquid fraction that is usually distilled by steam stripping.…”

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Effect of Rootstock on Citrus Fruit Quality: A Review

Morales

Bermejo

Navarro

et al. 2021

Food Reviews International

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Citrus rootstocks are a relevant tree part that contributes to crops adapting to biotic and abiotic conditions, it becoming a key factor to face the current era of climate change.Although the emphasis of most studies on rootstocks has been placed on the yield and optimization of the citrus fruit grown in different environments, other studies have paid attention to the effect of rootstock on fruit quality. Hence the quality of citrus fruit is becoming increasingly more relevant as consumers demand high internal and external qualities to eat citrus fruit fresh. To better understand how rootstock influences citrus fruit quality, the literature that focuses on physico-chemical parameters, nutritional compounds and physiological disorders has been revised. This review points out the influence that the external aspects surrounding plants has on fruit quality, such as the rootstock/scion interaction, the water uptake capacity of roots, the modification of the photosynthetic rate or availability of nutrients minerals.

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Effect of Rootstock on Citrus Fruit Quality: A Review

Morales

Bermejo

Navarro

et al. 2021

Food Reviews International

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“…However, several factors, e.g., frequent irrigation, higher application rates of nitrogenous fertilizers, luxuriant growth following heavy pruning or fertilization, delayed harvesting, etc., have been reported to be associated with this malady (Ladanyia 2008;Sharma and Saxena 2004;Singh 1977Singh , 2001. Similarly, some climatic factors, rootstock, fruit size, tree age, etc., are also known to accentuate the problem of granulation (Al-Hosni et al 2011;Sharma and Saxena 2004;Singh 2001). Furthermore, some investigators have also reported the association of enzymes such as peroxidase (Awasthi and Nauriyal 1972a, b) and superoxide dismutase (SOD) with citrus granulation (Chen et al 1994).…”

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Pattern of phenolic content, antioxidant activity and senescence-related enzymes in granulated vs non-granulated juice-sacs of ‘Kinnow’ mandarin (Citrus nobilis x C. deliciosa)

2015

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'Kinnow' is a hybrid mandarin, developed at California (USA) but could not become successful there. However, it revolutionized citrus industry in India, Pakistan and Bangladesh. Recent reports indicate that like other citrus fruits, it also suffers from juice-sac granulation but exact cause of this malady is not known. Fully-mature 'Kinnow' fruits were harvested and observations on some physical and biochemical attributes were recorded and their relationship was established with occurrence of granulation. About 12.8 % 'Kinnow' fruits were affected by juice-sac granulation. Granulated fruits had higher average weight (178 ± 2.26 g), peel thickness (3.72 ± 0.23 mm), and less soluble solids concentrates (7.4 ± 0.21 %) than non-granulated fruits. Granulated fruits exhibited lower concentrations of total phenolics compounds (4.3 ± 0.56 mg 100(-1) g gallic acid equivalent fresh weigh) and antioxidants activity (1.78 ± 0.29 μmol Trolox g(-1) FW) but produced higher rates of carbon dioxide and ethylene, and exhibited higher activities of senescent-related enzymes such as lipoxygenase (LOX) (1.3 ± 0.31 μmoles min(-1) g(-1) FW) and pectin methylesterase (PME) (0.52 ± 0.12 μmol of NaOH g(-1) FW min(-1)) and had strong relationships with the occurrence of granulation. From this study, it can be concluded that total phenolics compounds, antioxidants and PAL enzyme activity have strongly negative co-relation; whereas, senescent-related enzymes such as LOX, and PME and rates of respiration or ethylene evolution have strongly positive relationships with the occurrence of granulation in 'Kinnow' mandarin.

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