通常是指在同一树种分布区中，一批种子或苗木的来源或原产地。
n. provenance
火种源 AllSpark
种源地 provenance
种源试验 [林] provenance trial ; Provenance Test
种源选择 provenance selection ; seed source selection
物种源始 The Origin of Species
不同种源 Different seed source ; different provenances
种源区 provenance zone
物种起源 On the Origin of Species ; [进化] origin of species ; The Origin of Species ; The Origins of Species ; [医] origin of species
火种源/能量火种 Allspark
The provenance regionalization of G. uralensis in our country was primarily completed; the best provenance was primarily selected according to society demanding.
初步完成了全国范围内的种源区划，并根据社会需要进行了优良种源的初步选择。
参考来源 - 乌拉尔甘草地理变异与种源选择In production, the rhizome sowing is the main propagation way of Diling; The generation rate is lower and seed resource is fairly deficient.
生产上，地灵主要通过播种地下茎进行繁殖，繁殖系数低，种源匮乏。
参考来源 - 地灵（Stachys floridana）离体快速繁殖体系建立的研究The provenance of 17841 is the most one with 76.2% at P values,so is 17834 with 73.6%.
其中17841种源的多态位点百分比P最高达76.2％，其次是17834种源达73.6％。
参考来源 - 韦塔桉不同种源群体遗传结构的RAPD分析·2,447,543篇论文数据，部分数据来源于NoteExpress
开关位置指示灯：显示负荷连接至哪一种源。
Switch-Position Pilot Lights: Indicate source to which load is connected.
管胞长度的种源区和产地效应很小，无一定的地理变异趋势。
There were very small effect of seed source and no definite geographic pattern in tracheid length.
福建南平种源苗期综合表现良好，是丽水市可以进一步扩大引种试验的种源。
The seedlings' comprehensive behavior of Nanping provenance is good, which can be further cultivated in Lishui City.
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