Table 2.

Water content (WC₅₀), water activity (a_w50) and water potential (Ψ₅₀) at which half of the initial germinability was lost, inverse to the seed-to-seed variation (β) total lipid content, unfrozen water content (WC_u), and corresponding water activity (a_wu) and water potential (Ψ_u), of seeds of the four Citrus species studied

Species	WC50 (g g−1)	aw50	β	Ψ50 (MPa)	Lipid content (% d. wt)	WCu (g g−1)	awu	Ψu (MPa)
C. aurantifolia	<0·02	<0·08	–	<−340	52·4	0·09	0·74	−41
C. grandis	0·10	0·67	35·0	−54	37·1	0·14	0·77	−36
C. madurensis	0·16	0·85	20·4	−22	46·2	0·11	0·77	−35
C. reticulata	0·14	0·82	27·5	−27	51·8	0·09	0·74	−41