Spanish sage or lavender sage (Salvia lavandulifolia Vahl) is an aromatic plant with a high economic potential in agriculture because of its rusticity and low chemical inputs. However, the presence of numerous chemotypes hinders the supply of homogeneous crops to the industry and makes the selection and the standardising of the plant material necessary. With this aim, our group achieved an extensive population survey of this species across the Iberian Peninsula to investigate the variability of this species and started a selection program based in multienvironment trials. Thus, 12 wild populations of S. lavandulifolia have been grown in two different localities and their dry biomass production, yield, and composition of essential oil have been monitored during 2 yr of cultivation to evaluate the effect of the genotype × environment interaction on these traits. Each population presented a clearly differentiated composition of the essential oil, although camphor (15.3% average), 1,8-cineole (15.0%), α-pinene (11.3%), β-pinene (8.5%), and limonene (7.5%) were the main compounds. Other compounds like p-cymene, γ-terpinene, bornyl acetate, spathulenol, or viridiflorol were only present in some samples. The yield of essential oil ranged from 0.9 to 2.3 g per 100 g dry biomass, and the dry biomass from 76 to 322 g plant⁻¹. Despite the high variability of these traits, we inferred that the essential oil composition in S. lavandulifolia is chiefly determined by genetics which suggests that individual plants (clones) with a favorable composition for a specific application could be selected and bred with a homogeneous quality over time.

中文翻译：

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Salvia lavandulifolia Vahl栽培种群精油成分的变异性

西班牙鼠尾草或薰衣草鼠尾草（Salvia lavandulifolia Vahl）是一种芳香植物，由于其质朴和低化学投入，在农业中具有很高的经济潜力。然而，众多化学型的存在阻碍了向行业供应同质作物，并使植物材料的选择和标准化成为必要。为此，我们小组在整个伊比利亚半岛对该物种进行了广泛的种群调查，以调查该物种的变异性，并开始了一项基于多环境试验的选择计划。因此，12 个S. lavandulifolia野生种群已经在两个不同的地方种植，并且在 2 年的种植过程中监测了它们的干生物量生产、产量和精油成分，以评估基因型 × 环境相互作用对这些性状的影响。尽管樟脑（平均 15.3%）、1,8-桉树脑（15.0%）、α-蒎烯（11.3%）、β-蒎烯（8.5%）和柠檬烯（7.5 %) 是主要化合物。其他化合物，如对伞花烃、γ-萜品烯、乙酸冰片酯、石榴酚或 viridiflorol 仅存在于某些样品中。每 100 g 干生物量的精油产量为 0.9 至 2.3 g，干生物量为 76 至 322 g 植物^-1. 尽管这些性状的高度可变性，我们推断S. lavandulifolia中的精油成分主要由遗传学决定，这表明可以选择具有对特定应用有利的成分的个体植物（克隆），并以均匀的质量培育时间。