الفهرس 
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Abstract
A STUDY ON THE EFFECT OF SOME ENVIRONMENTAL
FACTORS ON mE PRODUCTIVITY OF SOME FLAX
VARIETIES
A field experiment was conducted in Gemmiza Agricultural
Research Station in 1995/1996 and 1996/1997 seasons to study the
response of two flax varieties to sowing dates, planting density and
their interactions.
The two varieties were : the local dual purpose variety ”Giza8”
and the introduced fiber flax type ” Iriana ”,
Sowing dates were: Oct.25, Nov.l5 and Dec.5. Planting
densities included seeding 1125,1500 and 1875 seeds 1 m2,
represented seeding rates of 45,60 and 75 kg Ifad for Giza8
corresponding to 24 ~32and 40 kg! fad for Iriana .
A spilt- spilt plot design in four replications was used, the main
plots were randomly assigned to the two varieties, the sub plots to
sowing dates and the sub-sub plots to plant densities.
Data on straw, fiber and seed yields as well as their related
characters were collected.
Technological characters were also considered Results could be
summarized as follows :
1- Iriana variety significantly surpassed Giza 8 in plant height,
technical stem length, straw yield /plant, straw yield! fad and fiber
yield /fad in both seasons.
On the other hand, Giza 8 was of thicker stem diameter
compared with Iriana.
2- Giza 8 produced greater number of capsules!plant and more
seeds number/capsules than Iriana in both seasons.
On the other hand, Iriana variety significantly surpassed Giza8
in apical branching zone length in both seasons.
3- Giza 8 significantly surpassed Iriana in seed yield / plant,
seed index, seed yield! fad and oil percentage in both seasons .
4- Iriana variety as a fiber flax type was superior in fiber length,
long fiber percentage and fiber fineness compared with Giza 8 in both
seasons.
5- Early planting of flax on Oct.25 favorably affected plant
height, technical stem length, stem diameter, straw yield! plant as well
as per fad, number of capsules! plant, number of seeds!capsules, apical
branching zone length, seed yield! plant, seed yield fad and seed index
compared with late sowing on Nov.I5 and Dec.5 in both seasons of
experimentation.
6- Technological characters of fibers were positively affected
by early sowing on Oct.25 where significant increases were recorded
in fiber length, long fibers Percentage and fiber fineness compared
with delayed sowing.
7~ Oil percentage was significantly increased by earlier sowing
on Oct.25 compared with late sowing in both seasons.
8~ Increasing planting density from 1125 to 1500 and 1875
seeds! m2 significantly increased total plant height, technical stem
length, straw yield /fad, fiber yield /fad and seed yield! fad in both
seasons.
9- On the other hand, increasing planting density significantly
reduced stem diameter, straw yield! plant, number of capsules! plant,
number of seeds / capsule, seed yield / plant and seed index in both
seasons.
10~ Fiber length, long fibers percentage and fiber fineness were
positively affected by dense planting where significant increases were
recorded due to increasing number of seeds!m2 to 1875 seeds/ m2 .
On the other hand oil % was reduced due to intensive planting
in both seasons.
II ~ The effect of the interactions between the experimental
factors significantly affected many of the studied characters as shown
in tables 18 and 19 where a summary indicating the highest response
Val~l s, significance and combination of factors of the interaction
eff ts on the studied characters of flax in both seasons. It was evident
that the best combination for producing the highest straw and fiber
yiel;S of the best technological characters was achieved.by growing
Iriaaa variety early on Oct2S at the highest planting density of 1875
~ / m2
• For producing the highest seed and oil yield, the results
85
indicated that growing Giza8 variety on Oct.25 at 1875 seeds / m2 is
recommended,
Table (18) : Highest response value, significance and
combination of factors of the interaction effects on the studied
dharacters of flax in 1995/1996 season.
Interactions
Characters
Totjd plant height
(em)
Variety x Dates
* 98.35
Iriana, Oct.25
Variety x
Density
* 99.41
Iriana, 1875/m2
Dates x Density
*92.61
Oct.25, 1875/m2
Variety x Dates
x Density
*101.85 Iriana.
Oct.25, 1875/m2
Technical stem
length (em)
Main stem
diameter (mm)
* 78.95
Iriana , Oct.25
2.80NS
Giza8, Oct.25
* 78.89
Iriana,1875/m2
* 2.87
GizaS ,1125/m2
* 74.36
Oct.25, 1875/m2
2.50NS
Oct.25,1125/m2
* 81.90 Iriana /
Oct.25, 1875/m2
2.90 NS Giza8 ,
Oct.25,1125/m2
Strar.v yield / plant
(~)
3.29NS
Iriana, Oct.25
* 3.34
Iriana, 1125/m2
* 3.11
Oct.25,1125/m2
* 3.42 Iriana,
Oct.25,1125/m2
Sm w yield / fad
(0
3.61 NS
Iriana, Oct.25
* 3.67
Iriana,1875/m2
* 3.42
Oct.25 1875/m2
* 3.76 Iriana,
Oct.25,1875/m2
Fi ~r yield! fad
(kg)
N”umberof
cansules / plant
465.64NS
Iriana, Oct.25
* 9.66
Giza8, Oct.25
* 482.52
Iriana, 1875/m2
10.12 NS
GizaS,l1251m2
*425.46
Oct.25, 1875/m2
10.35 NS
Oct.25,II25/m2
*501.09 Iriana,
Oct.25,1875/m2
12.83NS Giza8
Oct.25,1125/m2
Number of seeds /
capsule
858NS
Giza 8 , Oct.25
8.11 NS
GizaS. 1125/m2
8.SONS
Oct.25,II25/m2
9.65 NS Giza8,
Oct.25,1125/m2
Ap IcaI branching
zone lenstth (an)
See~ yield / plant
(2)
19.65 NS
Iriana, Oct.25
1.71 NS
GizaS, Oct.25
*2052
~t8751m2
<un
GizaS,11251m2
* 19.38
Oct.25,11251m2
*156
Oct.25. 11251m2
* 22.16 Iriana,
Oct.25,1875/m2
* 1.82 GizaS,
Oct.25,11251m2
&~index(g)
Sej,d yield / fad
(k2l
* 8.37
GizaS,Oct.25
61439NS
Giza8,0ct.25
*8.27
Giza8.112S1m2
* 624.35
GizaS. 18751m2
* 7.39
0ct.2S,11251m2
58131 NS
0ct.2S,18751m2
8.39 NS Giza8,
Oct.25,11251m2
* 639.45 Giza8~
Oct.25,18751m2
Iiber length 76.84NS
Iriana, 0ct.2S
* 72.63
0ct.2S 1875Jm2
*SO.161riana,
0ct.2S, 18751m2
F !ber fineness
,(Nm)
* 13.91
Iriana , 0ct.25
*197.70
T•••••••• Dec:5
* 13.15 .
IriaDa, 187S1m2
191.38NS
~ 187S/fIJ.2
* 13.31
Oct.25,18751m2
*192.06
Dec.S, 1875/m2
* 13.98 IriaDa,
Oct.25,18751m2
*199.48 Iriana,
Dcc.5, 1875/ni oa percri.tage
(%)
42.S2NS
r...i-Jil 0ct.25
* 40.41
Oct.25,1125/m2
• 42.87 GizaB,
Oct.2S,11251m2
~---+-_._- -- .__. -- ._-------------- -------~~~---------
86 -
Table (19) .. Highest response value, significance and
combination of factors of the interaction effect on the studied
characters of flax in 1996 / 1997 season.
Interactions
a aracters Variety x Dates Variety x Density Dates x Density Variety x Dates x
Densitv
T< tal plant * 110.79 * 114.50 * 107.93 * 117.25 Iriana,
he Igbt (em) Iriana,Oct.25 Iriana, 1875/m2 Oct.25, 1875/m2 Oct.25, 1875/m2
Ted inical stem * 91.41 * 94.71 * 88.00 * 96.79 lriana
leIIJnh (em) Iriana, Oct.25 lriana, 1875/m2 Oct.25, 1875/m2 Oct.25,1875/m2
Main stem *3.29 *3.37 3.27NS 3.46 NS Giza8,
diameter Giza8, Oct.25 GizaB,II25/m2 Oct.25,II25/m2 Oct.25,1875/m2
~m.m)
Str w yield / 3.82NS * 3.84 3.63 NS • 4.01 Iriana,
tllant (e;) Iriana, Oct.25 lriana, 1125/m2 Oct.25,II25/m2 Oct.25,I25/m2
Str wyield/ 4.23NS * 4.32 4.04NS * 4.45 Iriana,
~ad (t) Iriana, Oct.25 lriana, 1875/m2 Oct.25,1875/m2 Oct.25,1875/m2
Fibc r yield fad • 535.11 • 535.76 * 507.89 * 580.77 Iriana,
Ck2) Iriana, Oct.25 lriana, 1875/m2 Oct.25,1875/m2 Oct.25,1875/m2
N ~berof 11.90 NS 13.27 NS • 13.69 16.05 NS Giza8
ca tpsules / Giza8,Oct.25 Giza8, 1125/m2 Oct.25,1125/m2 Oct.25,1125/m2
I plant
N ~berof 8.48 NS *9.32 8.44NS 9.48 NS Giza8,
see<!Is / capsule Giza8, Oct.25 Giza8, 112S/m2 Oct.2S,1125/m2 Oct.25,1125/m2
f’\Pical 19.37NS 19.77 NS 40.~NS 20.46 NS Iriana,
bran chiag zone Iriana, Oct.25 lriana,1875/m2 Oct.25, 125/m2 Oct.25,1875/m2
leI IJnh (em)
Se p!dyield / * 2.02 * 2.11 *1.90 * 2.21 Giza8,
dIant(2) Giza8, Oct.25 GizaB, 1125/m2 Oct.25,1125/m2 Oct.25,1125/m2
Sc:ed index * 8.64 * 8.86 7.62 NS 8.87 NS GizaS,
(st) GizaS, Oc:t.25 GizaS, 1125/m2 Oct.25,1125/m2 Oct.25,1125/m2
Se ed yield/ 702.86NS * 717.97 668.47NS * 735.38 Giza8,
JJut (kg) GizaS, 0ct.2S r......2.•1875/m2 Oct.25, 1875/m2 Oct.25.1875/m2
Fit~rlcDgth * 89.38 *·92.65 * 86.10 * 94.53 1riaIla,
(em) Iriana, Oct.25 IriaDa, 187S/m2 Oct.25,I87S/m2 Oct.25,1875/m2
LJog fiber * 13.80 *13.27 * 13.61 * 13.94 Iriana,
I:riaDa,Oct.25 Iriana, 18751m2 Oct.25,187S/m2 Oct.25,I87S/m2
Fib ~finCDess 200.57 NS *196.65 *194.89 • 201.60 Iriana.
IlNm) IriaDa, Dec.5 Iriana, Ifr1S/m2 Dec.5, 187S/m2 Dec.S. 1875/nl
Oil percentage 42.56NS 4241NS * 40.46 * 4294 Giza8,
(lJ,) ~0ct.2S GizaB,I12S/m.2 Oct.25,112S/m2 0ct.2S,1125/m2
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