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. 2020 Feb 14;125(6):993–1002. doi: 10.1093/aob/mcaa026

Table 1.

Alexander staining of pollen of C. sativa, C. microcarpa and F1 hybrids

Stain positive Stain negative Percentage stain positive
C. sativa DsRed F 245 2 99.2
C. microcarpa Guillestre 122 0 100
C. microcarpa Guillestre × C. sativa DsRed F 6 255 2.3
C. sativa DsRed F × C. microcarpa Guillestre 8 426 1.8

Viability of freshly harvested pollen grains was evaluated by Alexander staining.