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Enhancing Pinus pinea cone production by grafting in a non-native habitat
New forests ( IF 1.9 ) Pub Date : 2021-03-26 , DOI: 10.1007/s11056-021-09842-5
Verónica Loewe-Muñoz , Rodrigo Del Río , Claudia Delard , Mónica Balzarini

Pinus pinea is an interesting species for its valued pine nuts. Despite the high demand for this nut, the species is mostly harvested from natural forests, because the time elapsed until the trees come into production hinders advances toward a more intensive cultivation. The grafting technique has been used to favor an earlier production in native Mediterranean habitats. In Chile, stone pine has been recently included in orchards. The objective of this study was to assess the initial performance in terms of growth, entry into production and cone yield of three grafting trials of the species established in Chile; two of the trials included nursery-grafted plants and the other, in situ grafting of P. pinea on a 3-year-old P. radiata plantation. An earlier entry into production and a higher number of female strobili and 1-year-old conelets (up to 2.9 times) were found in nursery-grafted plants compared with control seedlings. Growth was higher in trees in situ grafted onto radiata pine than in seedlings; eight years after grafting, the trees had achieved reproductive maturity, 67% had on average three cones per tree, and the presence of female strobili and 1-year-old conelets was 6.6 and 15.6 times higher than in seedlings, respectively. Radiata pine could be a feasible rootstock for either in-nursery or in situ stone pine grafting. Grafting accelerated stone pine entry into production, showing to be an effective tool for stone pine propagation and cropping.



中文翻译:

通过在非本地生境中嫁接来提高松果锥的产量

松pinea是其价值松子一个有趣的物种。尽管对这种坚果的需求量很高,但该树种大多是从天然林中收获的,因为直到树木开始生产所花费的时间阻碍了向更精耕细作的发展。嫁接技术已被用于促进在地中海原始栖息地的早期生产。在智利,果园里最近包括了松木。这项研究的目的是评估在智利建立的三个物种的嫁接试验的生长,进入生产和锥体产量方面的初步表现;其中两个试验包括苗圃嫁接的植物,另一个试验是在3岁的辐射上原位嫁接松果假单胞菌。种植园。与对照幼苗相比,在嫁接苗圃中发现了更早投入生产的雌性可育球茎和1岁的小球果(高达2.9倍)。在辐射松上原位嫁接的树木的生长要比幼苗高。嫁接八年后,树木已达到生殖成熟状态,每棵树木平均有3个视锥细胞达到67%,雌性可塑性和1岁龄的视锥虫分别比幼苗高6.6和15.6倍。辐射松可能是苗圃内或原位石松嫁接的可行砧木。嫁接加快了石松的生产,显示出是石松繁殖和种植的有效工具。

更新日期:2021-03-26
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