作者
Athena D McKown, Jaroslav Klápště, Robert D Guy, Yousry A El‐Kassaby, Shawn D Mansfield
发表日期
2018/10
期刊
New Phytologist
卷号
220
期号
1
页码范围
300-316
简介
- Spring bud‐break phenology is a critical adaptive feature common to temperate perennial woody plants. Understanding the molecular underpinnings of variation in bud‐break is important for elucidating adaptive evolution and predicting outcomes relating to climate change.
- Field and controlled growth chamber tests were used to assess population‐wide patterns in bud‐break from wild‐sourced black cottonwood (Populus trichocarpa) genotypes. We conducted a genome‐wide association study (GWAS) with single nucleotide polymorphisms (SNPs) derived from whole genome sequencing to test for loci underlying variation in bud‐break.
- Bud‐break had a quadratic relationship with latitude, where southern‐ and northern‐most provenances generally broke bud earlier than those from central parts of the species’ range. Reduced winter chilling increased population‐wide variation in bud‐break, whereas greater …
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AD McKown, J Klápště, RD Guy, YA El‐Kassaby… - New Phytologist, 2018