000			01817nam a2200229Ia 4500
008			220216s9999 xx 000 0 und d
100			_aMoraes L A C
245		0	_aKCN and linamarin applications and the translocation incompatibility of crown clones of Hevea sp. budded onto IPA 1
260			_bScientia Agricola _c2001
300			_a717-723
500			_aSource Year: 2002
520			_aThe effect of potassium cyanide and linamarin on translocation incompatibility of the rubber tree (Hevea brasiliensis) clone IPA 1 was compared with budded crowns of clones of other species. Solutions of KCN were applied causing rapid coagulation of the latex in the laticiphers of IPA 1, at very low concentrations, the same effect being observed in Fx 4098 at higher concentrations. The Fx 4098 clone exhibited a slight reduction of the latex flow at the highest KCN concentration. Linamarin application resulted in necrosis preceded by latex coagulation, which spread further at the stem, indicating a higher mobility of linamarin than KCN. The clone IPA 1 was sensitive to low concentrations of linamarin, with higher concentrations causing the same effects on Fx 4098 and no significant effect on Fx 3864. An accumulation of free HCN was detected in the bark of IPA 1 with linamarin application. The incompatibility with IPA 1 was caused by the translocation of cyanogenic glycosides from the budded crowns to the stem which was deprived with sufficient capacity to remove the HCN liberated by the hydrolysis of cyanogenic glycocides, while Fx 3864 had a very efficient detoxifying capacity.
650			_aCrown clones
650			_aHevea
650			_aKCN
650			_aLinarian application
700			_aCamargo E C
700			_aDe P R
700			_aMoraes V H De F
856			_uCPA .28(5)
942			_cJS
999			_c61845 _d61845