Assembling the 20 Gb white spruce (Picea glauca) genome from whole-genome shotgun sequencing data. by Birol, I, Raymond, A, Jackman, S, Pleasance, S, Coope, R, Taylor, G, Yuen, M, Keeling, C, Brand, D, Vandervalk, B, Kirk, H, Pandoh, P, Moore, R, Zhao, Y, Mungall, A, Jaquish, B, Yanchuk, A, Ritland, C, Boyle, B, Bousquet, J, Ritland, K, Mackay, J, Bohlmann, J, Jones, S