Table 1.

Boechera Accessions Used in SuperSAGE Analysis, Including Stage-Specific Developmental Characteristics and Ploidy Content of Cells in Ovules Microdissected from Sexual and Apomictic Boechera

Sample	Speciesa	ID	Reproductionb	Stagec	Developmentd	Microdissected Ovule Ploidy Compositiond	Collection Locality
Sex A	B. polyantha (B. holboellii)	105.6	Sex	A	Nucellus	Diploid	Bandy Ranch, Missoula Co, Montana
Sex B				B	MMC formation	Haploid, diploid
Sex C				C	Tetrad to degeneration	Haploid, diploid
Sex D				D	Fertilized ovules	Diploid, triploid
Apo A	B. retrofracta (B. divaricarpa)	67.5	Apomixis	A	Nucellus	Diploid	Ranch Creek, Granite Co, Montana
Apo B				B	MMC formation	Diploid
Apo C				C	Tetrad to degeneration	Diploid
Apo D				D	Fertilized ovules	Diploid, tetraploid, hexaploid

^aSpecies identifications were based upon silique orientation, trichome morphology, and cpDNA sequences (see Kiefer et al., 2009). In parentheses are old species names for the same plants which were used in Sharbel et al. (2009).

^bReproductive mode was confirmed using the flow cytometric seed screen (Matzk et al., 2000; Sharbel et al., 2009).

^cSee Figure 1 for images of each stage.

^dAccording to Schneitz et al. (1995)