Surface energy values of the samples were estimated using the sessile drop contact angle method at room temperature with 1-bromonaphthalene
(dispersive component [[delta].sup.d] = 42.517 mJ/[m.sup.2], polar component [[delta].sup.p] = 0.283 mJ/[m.sup.2]) and glycerin ([[delta].sup.d] = 35.541 mJ/[m.sup.2], [[delta].sup.p] = 25.359 mJ/[m.sup.2]).
The root tips of tuber mustard with different length were dipped in five kinds of chemicals (ice water, colchicine, 8- Hydroxyquinoline, saturated 1-Bromonaphthalene and P- Dichlorobenzene) in different pretreatment time (1, 2, 3, 4, 5 and 6 h).
The root tips were placed into saturated 1-bromonaphthalene and kept for 4 h at 4oC when the root grow to 0.5-1.0 cm.
For cytological analysis, small pieces of callus tissue (2-4 mm), randomly selected and subcultured for 3 to 5 d, were pretreated in saturated 1-bromonaphthalene
solution overnight at 4 [degrees] C, fixed in 1:3 glacial acetic acid:ethanol and stored at 4 [degrees] C.
(22) compared interfacial tension data obtained by drop deformation and Rayleigh instability for the system corn syrup (suspending phase)-homogeneous mixtures of oxidized oil and 1-bromonaphthalene