ESTUDIO PARA LA MEJORA DE LAS TÉCNICAS DE PROPAGACIÓN DE LA ALCAPARRA (Capparis spinosa L.).

Ferrer, Mariano Juan

doi:10.4995/thesis/10251/86185

Cited by 5 publications

(20 citation statements)

References 76 publications

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“…The trials were judged as satisfactory when the difference between the maximum and minimum germination percentages of the four replications did not exceed the tolerance established by [27]. For the analysis of the germination curves of each repetition, according to studies carried out previously by [14,30], the model that best fits is that of the logistic function proposed by [31] and has the following expression:…”

Section: Germinationmentioning

confidence: 99%

“…Although the fruits contain many seeds, they have a very low germination percentage. Several authors have reported various studies to improve its germination and try to break the possible physical dormancy with different types of scarification, whether mechanical, chemical, thermal, or biological, [12][13][14][15], as well as being able to break the physiological dormancy with the use of gibberellic acid (GA 3 ) and potassium nitrate, as reported by [16][17][18][19]. It has been proven that scarification with sulfuric acid and the addition of GA 3 have improved the germination percentage [12,20], which Plants 2022, 11, 202 2 of 10 has led to the hypothesis that caper seeds can present physical dormancy (due to the impermeability of their cover) and physiological dormancy imposed by the embryo.…”

Section: Introductionmentioning

confidence: 99%

“…It has been proven that scarification with sulfuric acid and the addition of GA 3 have improved the germination percentage [12,20], which Plants 2022, 11, 202 2 of 10 has led to the hypothesis that caper seeds can present physical dormancy (due to the impermeability of their cover) and physiological dormancy imposed by the embryo. However, recently, [18] verified that the imbibition takes place through the hilum, and [14] obtained germination percentages up to 99% with only contribution of GA 3 without scarification, so they hypothesized that the dormancy caused by a waterproof seed coat should not be considered.…”

Section: Introductionmentioning

confidence: 99%

“…The longevity, also referred to as the half-life of the seeds, determined as the time taken for 50% of the seeds to die [21][22][23][24], of a caper seed lot stored at 7 • C and obtained by our research team was around 4 years (3.85 years [20]; 4.15-4.43, for two seed lots [14]). However, both studies recommended a storage period of no longer than two years, because during this period, the viability did not decrease and high germination percentages were obtained.…”

Section: Introductionmentioning

confidence: 99%

“…As Orozco-Segovia [26] stated, the only way to determine if seed coats are waterpermeable is to conduct imbibition studies. In this sense, an imbibition test was performed according to [18] using the Between Paper method (BP) [27], reproducing the conditions of the germination test, since in previous studies [14], no significant differences were detected between the moisture contents of the seeds soaked in a 10 cm water column and moistened with the BP method, neither with the use of water nor GA 3 to moisten the seeds.…”

Section: Introductionmentioning

confidence: 99%

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The Imbibition, Viability, and Germination of Caper Seeds (Capparisspinosa L.) in the First Year of Storage

Foschi

Juan

Pascual

et al. 2022

Plants

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The caper is a shrub that adapts to harsh environments when it is established, but it presents serious difficulties in its propagation, both by cuttings and by seeds. Its seeds have low germination percentages, and germination is a very slow process. Significant increases in germination have been obtained with scarification and with the addition of gibberellic acid (GA3) to the substrate, leading to the hypothesis that they have possible physical and physiological dormancy. However, the only way to examine the water-impermeability of the cover is through imbibition analysis. This study analyzes the imbibition, viability, and germination of two seed lots, obtained in different years and evaluated immediately after their collection (FS) and after being stored (7 °C) for one month (DS) and one year (SS). The seed moisture content stabilizes from the fourth day, exceeding in all cases 31% in all three seed states tested (FS, DS and SS). This allows the germination of all viable seeds, only with the addition of GA3 to the germination substrate, without the need for scarification, so that caper seeds exclusively appear to present a physiological latency. Germination decreased in storage, even with just one month. With the GA3 addition, high germination values were obtained (up to 95% in FS).

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Section: Germinationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

The Imbibition, Viability, and Germination of Caper Seeds (Capparisspinosa L.) in the First Year of Storage

Foschi

Juan

Pascual

et al. 2022

Plants

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Collection Guidelines to Achieve a Viable Caper Commercial Propagation

et al. 2021

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The caper (Capparis spinosa L.) is a perennial plant characteristic of the Mediterranean region that presents difficulties in its propagation, both vegetatively and by seeds. The main aim of this study is to provide collection guidelines to achieve a viable caper commercial propagation, for which three experiments were undertaken to determine the viability and germination in different seed lots. In the first experiment, commercial and own produced seeds (collected with the same criteria as commercial seeds) were analysed; the commercial seeds presented the lowest viability and germination. The second experiment analysed the effect of the fruit (from which the seeds were extracted) at its maturation stage, obtaining the lowest seed viability and germination in the seeds extracted from the dry fruits. In the third experiment, seed viability and germination were analysed immediately after collection, following a short drying period (3 d), and after six storage months. Viability and germination decreased with seed storage. Overall, it can be stated that caper seeds are sensitive to desiccation; consequently, a general rule of thumb is to collect the fruits once a week, to extract the seeds, and to plant them immediately for germination.

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Can the Caper (Capparis spinosa L.) Still Be Considered a Difficult-to-Propagate Crop?

et al. 2021

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As a perennial xerophytic shrub, characterized by plesiomorphic features, the caper (Capparis spinosa L.) is naturally spread throughout the Mediterranean basin and occupies an important ecological role, as well as an economic one, in traditional and specialized systems for commercial production. This species, in spite of its wide diffusion, is currently considered at risk of genetic erosion, mainly due to overgrazing and overharvesting for domestic uses and for trade. This situation is made more serious because of the lack of efficient propagation techniques, determining the caper as a “difficult-to-propagate species”. In this review, we report the main available sexual and vegetative propagation techniques with the aim of assessing whether, and to what extent, this criticality is still true for caper as a horticultural crop. In terms of seed propagation, germination rates have generally been considered quite low or unsatisfactory, and are also affected by hybridization phenomena that are likely to occur among both the wild and cultivated forms. The seeds show a physiological dormancy that can be lowered by adopting hormonal treatments, but in situ germination remains a critical phase. Vegetative propagation appears quite effective, mostly as related to in vitro techniques that allow caper cultivation that is no longer affected by propagation for an economic dissemination of the species in more intensive orchards. The research needs for Caper spinosa L. as a horticultural crop, especially in the field of genetic improvement and breeding, are also underlined.

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ESTUDIO PARA LA MEJORA DE LAS TÉCNICAS DE PROPAGACIÓN DE LA ALCAPARRA (Capparis spinosa L.).

Abstract: Caper (Capparis spinosa L.) is a plant cultivated especially for its flower buds (capers), which are included in the Mediterranean diet. The main producing areas are in the more arid environments of Morocco, Iberia, Turkey and the Italian islands of Pantelleria and Salina.xvii

Cited by 5 publications

References 76 publications

The Imbibition, Viability, and Germination of Caper Seeds (Capparisspinosa L.) in the First Year of Storage

The Imbibition, Viability, and Germination of Caper Seeds (Capparisspinosa L.) in the First Year of Storage

Collection Guidelines to Achieve a Viable Caper Commercial Propagation

Can the Caper (Capparis spinosa L.) Still Be Considered a Difficult-to-Propagate Crop?

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