The potential of pine resin as a renewable non-timber product is furthering the socioeconomic relevance of the resin industry in Europe, where maritime pine (Pinus pinaster Ait.) is the main tapped species. Characterizing maritime pine genetic resources in terms of resin yield potential and its covariation with tree growth is crucial to implement efficient tree breeding programs aiming to maximize resin yield without negatively impact tree growth. We explored genetic variation in resin yield and tree growth among provenance regions, populations within regions, and families of maritime pine. We used a progeny trial located at Central Spain to estimate additive genetic variation and heritability of resin yield, and a common garden located at Northwest Spain to explore variation among provenance regions and populations within regions. Resin yield was assessed in both trials with and without sulphuric-based stimulant paste. Association between growth and resin yield at different levels (phenotypes, families, populations and provenance regions) was also explored. Growth and resin yield were highly variable within populations, with narrow-sense heritability estimates being particularly high for resin yield (h_i² = 0.49). Growth varied significantly across provenance regions and populations within regions, while resin yield was only variable among provenance regions. Genetic variation in resin yield was similar in trees with and without stimulant paste. We did not find evidence of genetic correlations between growth and resin yield. However, at the phenotype level resin yield and growth were significantly correlated, although the sign of such association switched between trials. Across provenance regions, growth and resin yield where negatively correlated. Altogether, the high narrow-sense heritability estimate, the highly consistent genetic variation and the lack of negative genetic correlation with growth evidence the opportunity for implementing breeding programs to increase resin yield in maritime pine forests.

松树树脂作为可再生非木材产品的潜力正在进一步促进欧洲树脂工业的社会经济相关性，在欧洲，海洋松树（Pinus pinasterAit。）是主要的窃听物种。根据树脂产量潜力及其与树木生长的协变特性来表征海洋松树遗传资源，对于实施旨在最大程度提高树脂产量而不会对树木生长造成负面影响的有效树木育种计划至关重要。我们探索了起源地区，区域内的种群以及海生松科之间的树脂产量和树木生长的遗传变异。我们使用了位于西班牙中部的后代试验来估算附加的遗传变异和树脂产量的遗传性，并使用了位于西班牙西北部的公共花园来探究起源地区和区域内种群之间的变异。在有和没有硫基兴奋剂糊剂的两个试验中都评估了树脂的收率。不同水平（表型，家族，人口和出身地区）。种群之间的生长和树脂产量变化很大，狭义的遗传力估计对于树脂产量特别高（h_i ²  = 0.49）。生长在不同出身地区和不同种群之间的变化显着，而树脂产量仅在出身地区之间变化。有和没有刺激性糊剂的树木中树脂产量的遗传变化相似。我们没有发现生长与树脂产量之间存在遗传相关性的证据。然而，在表型水平上，尽管产量之间的关联性在试验之间切换，但树脂的产量和生长却显着相关。在不同的产地地区，生长和树脂产量呈负相关。总之，狭义的遗传力估计值高，遗传变异的高度一致性以及与生长的负遗传相关性的缺乏，证明了实施育种计划以增加海上松树林的树脂产量的机会。