Abstract Detail

Functional Genetics/Genomics

Upton, Racheal [1], Lachowiec, Jennifer [1].

Camelina sativa germination rate variation and genetic control across accessions.

Germination is the first step in successful crop growth. Camelina sativa is a promising oilseed crop and an alternative biofuel energy source. Camelina sativa germination rate and variability remain poorly understood, and greater insight into germination rate and genetic controls would assist in developing this novel crop. We studied the variability and genetic control of germination rates across 207 sequenced camelina accessions from around the world. We determined daily germination and rate for all accessions over two weeks. We found five distinct patterns of camelina germination across accessions. Greater germination rate variability was highly predictive of a lack of successful complete germination. Germination rate and number during the first four days were highly variable between accessions and determined the overall germination success of the accessions. Germination slope was found to be independent of individual germination day counts, and higher slopes during the first week of the study were correlated to greater overall success of individual accessions. To further investigate the genetic controls of germination in C. sativa we examined the heritability of germination metrics and used a genome-wide association study approach to determine candidate loci controlling germination rate. Our genetic analysis combined with the physiological measurements has provided promising avenues to identify influences on camelina germination rate for future breeding programs and mechanistic understanding.

1 - Montana State University, PSPP, 119 PBB, Bozeman, MT, 59718, USA

Functional genomics.

Presentation Type: Oral Paper
Number: FGG2001
Abstract ID:588
Candidate for Awards:None

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