Table 3.

Average megagametophyte length (in millimetres), embryo length (in millimetres), E:M ratio and viability (%) based on a cut test and 0.5% (w/v) TZ assessment of M. fraseri seeds stored for 6–42 months in a restoration seed bank

Storage duration (approx.)	Megagametophyte length (mm ± SE)	Embryo length (mm ± SE)	E:M ratio (± SE)	Viability (%) (TZ/cut test)
~6-months-old	40.8 ± 3.1 (n = 2)	6.6 ± 2.3 (n = 2)	0.16 ± 0.05 (n = 2)	40 (n = 2)
~18-months-old	39.6 ± 2.5 (n = 5)	7.0 ± 1.6 (n = 5)	0.18 ± 0.03 (n = 5)	100 (n = 5)
~30-months-old	43.6 ± 2.1 (n = 5)	6.8 ± 0.8 (n = 5)	0.16 ± 0.01 (n = 5)	100 (n = 5)
~42-months-old	47.4 ± 1.9 (n = 5)	5.8 ± 1.6 (n = 5)	0.12 ± 0.03 (n = 5)	100 (n = 5)