Phenotypic selection on ponderosa pine seed and seedling traits in the field under three experimentally manipulated drought treatments.

Evol Appl · 2019 · PMC6346659 · PMID 30697331

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a positive trendno p-value reported

The present study also detected a positive trend for earlier emergence in association with increasingly drier seed origins which suggests that timing of seed emergence may vary clinally.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.