词On the basis of a comprehensive analysis four different provenanceareas have been divided for woodpulp stands of Picea asperata.
经过综合分析，在四川省将粗枝云杉纸浆材种源林分划分为4个种源
。
On the basis of a comprehensive analysis four different provenanceareas have been divided for woodpulp stands of Picea asperata.
经过综合分析，在四川省将粗枝云杉纸浆材种源林分划分为4个种源。
The factors which influenced somatic embryogenesis and plantlet regeneration in Picea meyeri Rehd. et Wils. were studied in order to establish a high frequency embryogenetic system.
摘要为建立白杄体细胞胚胎发生及其植株再生的高频率实验系统，对聚乙二醇及干化处理的影响进行了系统研究。
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