Enhancing Pinus pinea cone production by grafting in a non-native habitat

Loewe-Muñoz, Verónica; Río, Rodrigo Del; Delard, Claudia; Balzarini, Mónica

doi:10.1007/s11056-021-09842-5

Cited by 5 publications

(4 citation statements)

References 25 publications

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“…The fresh weight of individual cones was similar in both rootstocks, indicating that the heteroblastic graft did not affect the final product. Furthermore, several heteroblastic grafts of Pinus species have been proved to even have a positive effect [5,33], although in our study those advantages were not evident. However, differences between years in the weight of the cones (with the same behaviour between rootstocks) were observed.…”

Section: Cone Productioncontrasting

confidence: 74%

“…Its dissemination in the Mediterranean basin was in the past linked to forestation, dune containment and wood production, but currently interest is focused on pine nut production. This production is already arousing the interest of other warm areas in the world such as Chile, Argentina, or New Zealand [5].…”

Section: Introductionmentioning

confidence: 99%

“…In this sense, silvicultural management techniques have been successfully used in improving the natural stand production [14,15], although the solution to guarantee a sustainable production of P. pinea seems to diverge into the management of this species as a horticultural crop. The first step was the use of grafts, which allows a notable reduction of the trees unproductive period, being much shorter than the expected in planting seedlings [5,[16][17][18]. Recently, a new improvement has been added by grafting selected scions from outstanding individuals with high productivity [19].…”

Section: Introductionmentioning

confidence: 99%

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An Agronomic Approach to Pine Nut Production by Grafting Stone Pine on Two Rootstocks

et al. 2021

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Stone pine (Pinus pinea) grows in natural stands within the Mediterranean basin and its nut is highly appreciated for its nutritional profile. Nevertheless, a decline in this species due to biotic and abiotic damages is currently being clearly observed. This situation has led to its development as a nut crop, to try to save its production and obtain regular harvests over the years. Under this agronomic scenario, the aim of this work was to compare the behavior of the stone pine grafted onto two rootstocks, P. pinea (PP) and P. halepensis (PH), by evaluating cone productivity, tree growth response, mast seeding patterns and pine nut composition. The field test was composed of 14 PH and 14 PP, randomly distributed into groups of 4–5 trees/rootstock. Data were from seven productive growing seasons. The results show higher growth and ripe cone production on PP rather than PH, although the productivity (cones/m2 canopy) was similar. Any effect of rootstock was observed on the mast seeding pattern and weight of cones, while the pine nut composition showed differences in the fatty acids content. The global quality of production was similar in PH and PP.

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Section: Cone Productioncontrasting

confidence: 74%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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An Agronomic Approach to Pine Nut Production by Grafting Stone Pine on Two Rootstocks

et al. 2021

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“…Due to the pine nut market opportunities, stone pine cropping has expanded to non-native countries, like Argentina [ 6 ], Australia [ 7 ], New Zealand [ 8 ] and Chile [ 9 ]. Significant efforts are being made to maximize pine nut production [ 10 ]. This is particularly important because only a very small fraction of cone weight corresponds to pine nuts [ 11 ].…”

Section: Introductionmentioning

confidence: 99%

Recommendations for increasing yield of the edible Pinus pinea L. pine nuts

Loewe-Muñoz,

Delard,

del Río

et al. 2024

PLoS ONE

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In Pinus pinea, cone to pine nut yield (total pine nut weight expressed as percentage of cone weight), an important crop trait, is decreasing worldwide. This phenomenon is of great concern, since the nuts of this species are highly demanded. Cone weight, seed and pine nut morphometry, and pine nut yield were monitored in a non-native area in Chile for 10 years. For this purpose, 560 cones, and the seeds and pine nuts contained in them, were counted, measured and weighed in a multi-environment study involving seven plantations. Seed and pine nut damage was evaluated. Two contrasting categories of cone weight (heavy/light) were defined. Cone to pine nut yield (PY) and other traits were calculated and compared between categories using a mixed linear model. Regression trees were used to explain PY variability. Cone weight was higher than in the species’ native range (474 g vs 300 g on average). Pine nut number per cone and PY were significantly higher in the heavy cone category than in the light cone category (125 vs 89 units, and 4.05 vs 3.62%, respectively), The percentage of damaged seeds was lower in heavy than in light cones (9.0% vs 15.9%). Thus, PY depended on seed and pine nut morphometry as well as on seed health. Management practices, such as fertilization and irrigation, could be used to boost production of heavy cones and consequently increase PY.

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