000			01399nab a22003017a 4500
001			G56224
003			MX-TxCIM
008			121211b |||p||p||||||| |z||| |
040			_aMX-TxCIM
041	0		_aEn
043			_aNL
072		0	_aF60
082	0	4	_a81-586261
100	1		_aPilet, P.E.
245	0	0	_aLight and ark georeaction of maize roots: _b effect and endogenous level of abscisic acid
260			_c1980
340			_aPrinted
500			_a24 ref.; Summary (En)
520			_aAn ABA pretreatment enhanced the geotropism of maize (cv. LG 11) root segments. Such stimulation was much stronger for georeacting roots in darkness. When ABA was applied asymmetrically on the lower part of the apical cut end of decapped segments, it induced a downward curvature which increased with increasing ABA concentration. Using the GC/MS technique, ABA was found in the root tip: the light exposed roots containing more ABA than those kept in darkness. But no changes in the total ABA level were obtained between vertical and horizontal segments. This indicates that the increase in the growth inhibitor amount in the lower part of the
546			_aEnglish
591			_aCOMOD
595			_aAC
650	1	7	_aMaize _gAGROVOC _2 _91173
650	1	0	_91314 _aZea mays _gAGROVOC
700	1		_aRivier, L., _ecoaut.
773	0		_tPlant Science Letters _n81-586261 _gv. 18, no. 3, p. 201-206
942			_cJA
999			_c16695 _d16695