الفهرس 
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Abstract
The study was carried out in two seasons o~ 1990/1991 and 1991/1992 on Str9litzia re6inoe plant. The research aimed to stUdy the e~fect of growth factors on seed germination and
growth of seedlingsI. Germination of Seeds J1. In the first season by soaking ~OT 24 hours in GA3
and NAA at 5, 10 and 20 ppm.
2. In the second season by soaking seeds in : GA3 at 2 and 5 ppm for 24 hours.NAA at 20 and 30 ppm for 24 hours.
Combination of GAs and NAA at different concentrations faT 24 hours.
Enzyme for 12, 24 and 48 hours~
Peat moss for 10 days.
Germination 01 seeds resulted in significant increased
in germination percentage, germination rate (days) and both
length of seedling and the mean number of leaves through the
germination periods.
The best results were obtained by using NAA alone at 20II. Growth Regulators I
The present e~periment was conducted to study the effect of some growth regulators on seedlings one and two years old by using : GAa at 100 and 200 ppm. NAA at 25 and 50 ppm Paclobutrazol at 50 and 100 ppm.
Foliar applications of the tested growth substances were
applied twice with two weeks interval.Results were significant in different growth factors as
plant height~ mean number of leaves, leaf area, the mean number, volume and length of roots, the fresh and dry weight leaves, petioles, stem and roots.
The highest result was obtained by using BAa at 200 ppm in both ages. While seedling of one year age gave more
response. III. Nutrients I
The first part of e~periment by supplying essential macTo~elements (t~) beginning with 5:3:1 (0.5 + 0.3 + 0.1
_g/seedling) and its double rates with and without micro elements. The second is repetition of the first experiment.
The results was obtained significant in different growth factors.
The best nutrients rates were 10:3:2, 11.0 + 0.3 + 0.2 g/seedling), 10:6:1, (1.0 + 0.6 + 0.1 g/seedling> followed by
10:6:2 (1.0 + 0.6 + 0.2 g/seedling> 1NPK> alone.
VI. Flower Production:
The present e~pe,iment was conducted to study the effect
of some growth regulators on the production of inflorescence
and its quality in plants two years old : GAa 50 ppm. eee 500 ppm.
NAA 50 ppm. The best results were obtained by used GAa followed by
NAA and CCC.The important effect. of both growth regulators and
nutrients on chemical composit.ion were : 1. Total carbohydrates increased with increasing plant age.Both of growth regulators and nutrient application increased the accumulations of total cazrbohydrates in
plant tissues over the control one.
2~ Nitrogen content also increased than control in all treatments of GAs, NAA, PP333 and nutrients rates.
3. Both the phosphorus and potassium contents increased by growth regulators and nutrients treatments. 4. Tt.E! addition of GAs, NAA and PP333 at different concentration
caused an increase in chlorophyll A, Band carotenoid content in bott. tr-.e two seasons througt”t the
periods of growth comparing with control. On the other hand, using nutrients increased chlorophyll A, Band
carotenoid. The results of the present research show that to get good of both seed germination and
characters with Strelitzia re6inae. it is practice the 1011owing : order
vl=-get.ait”.e ad”i~sable to
1. Treating with soaking of seeds in sulphuric acid at 10% to 10 minutes beforE soaking by naphthaleneacE~ic acid
at 20 ppm for 24 hours that resulted in good germinated percentages and germination rate (days).
2. Using spraying seedlings of StreLitgio: re6in.ae by
gibberell ic. ac.id at 200 ppm twice with two weeks
intervals wasmore effective on vegetative growth.
3. Supplying plants with nutrients at 10:6:1 (1.0 + 0.6 +
0 •.1 g}1 seedling alone which consists of Ammonium rtit.rate super phosphate ... potassium sulphate to
Str9Lit2ia re8inae seedlings gave the best vegetative growth parameters.
4. Spraying plants of StreLitzia resinae by gibberellic acid at 50 ppm twice with t.wo weekS int.erval as more
-nd effective on production of inflorescence its quality.