The Influence Of Priming Two Cucumber Cultivar Seeds
The Influence Of Priming Two Cucumber Cultivar Seeds
The Influence Of Priming Two Cucumber Cultivar Seeds
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J. Duhok Univ. Vol.13, No.1, (Agri. And Vet. Sciences) Pp 94-102, 2010<br />
generated in mesophyll and epidermis cells<br />
contribute to the accumulated ABA although<br />
ABA synthesis is initiated in epidermis cells and<br />
then shifted to mesophyll and finally tranlocated<br />
to guard ells to mandate closure (Losanca et al.,<br />
2002). (2): During growth stage ABA is required<br />
for temporary stomata closure at drought<br />
episode, and if episode was lasted, a mechanism<br />
of stomata modification would be occurred, at<br />
leas in drought endurable plants. Bradford, et al.<br />
(1983) found that stomatal conductance of flacca<br />
leaves was greater than that of RR, and could be<br />
phenotypically reverted by spraying with 30<br />
micromolar ABA. Stomatal conductance of<br />
flacca leaves was also reduced by increasing<br />
CO2 pressure, increasing leaf to air vapor<br />
pressure difference, and decreasing quantum<br />
flux, irrespective of ABA treatment.<br />
Syrian plants sprayed with 2x10 -6 M ABA<br />
treatment apparently exceeded other interaction<br />
treatments. This treatment revealed the highest<br />
plant fresh weight (231 g), weight of mature<br />
pods per plant (105 g). Aquadulce plants sprayed<br />
by 2x10 -3 M ABA treatment gave the highest<br />
pod dry weight per plant (50.9 g) and yield of<br />
dry seeds per plant (42.93 g). However, the<br />
lowest plant fresh weight (124.67 g) was<br />
concomitant by Babylon sprayed with 2x10 -6 M<br />
ABA treatment. <strong>The</strong> lowest weight of mature<br />
pod per plant (33.33 g), and yield of dry seeds<br />
per plant (17.8 g) were consistent with Babylon<br />
sprayed with 2x10 -3 M ABA treatment (table, 5).<br />
Under rainfall conditions Aquadulce cultivar<br />
gave reasonable yield (Abdel, 1997).<br />
Furthermore, this cultivar also manifested<br />
paramount response in growth and yield<br />
parameters supplementary irrigation (Abdel,<br />
1993). Yield improvement under drought<br />
conditions might be referred to ABA role in<br />
blocking the synthesis of GAs (Hopkins, 1999),<br />
the role of phaseic acid in the casements of αamylases<br />
synthesis which resulted in further<br />
seed reserve accumulations (Srivastava, 2002).<br />
Table (5): <strong>The</strong> effects of varying abscisic acid (ABA) rates on some flowering and pod performance traits of<br />
five water stressed fababean cultivars* **<br />
Y (g.plant -1 )<br />
33.03a<br />
32.83a<br />
20.56b<br />
25.09ab<br />
21.89b<br />
25.3a<br />
24.75a<br />
29.99a<br />
31.23c<br />
24.92bc<br />
42.93a<br />
31.06ac<br />
36.43ab<br />
31.01ac<br />
20.75bc<br />
22.32bc<br />
18.62c<br />
24.34bc<br />
22.3bc<br />
28.62ac<br />
19.1bc<br />
17.8c<br />
28.76ac<br />
W 100 (g)<br />
134.51a<br />
129.83a<br />
128.5a<br />
138.29a<br />
138.69a<br />
138.85a<br />
134.62a<br />
128.43a<br />
145.79a<br />
126.01a<br />
131.74a<br />
137.92a<br />
129.05a<br />
122.51a<br />
134.73a<br />
125.48a<br />
125.3a<br />
143.98a<br />
144.28a<br />
126.6a<br />
131.82a<br />
148.26a<br />
136a<br />
P I wt<br />
8a<br />
8.05a<br />
7.36a<br />
6.69a<br />
6.2a<br />
7.08a<br />
7.17a<br />
7.53a<br />
8.23a<br />
7.79a<br />
7.97a<br />
8.04a<br />
9.88a<br />
6.23a<br />
7.86a<br />
7.08a<br />
7.15a<br />
6.48a<br />
6.31a<br />
7.28a<br />
4.79a<br />
4.8a<br />
9.01a<br />
P dwt<br />
41.09a<br />
40.89a<br />
27.93b<br />
31.78ab<br />
28.09b<br />
32.38a<br />
31.69a<br />
37.52a<br />
39.46ac<br />
32.9ac<br />
50.9a<br />
39.1ac<br />
46.3ab<br />
37.26ac<br />
28.61bc<br />
29.4ac<br />
25.78bc<br />
30.82ac<br />
28.61ac<br />
35.9ac<br />
23.89c<br />
22.6c<br />
37.77ac<br />
M P wt (g)<br />
77.44ab<br />
91.33a<br />
68.67ac<br />
53.56bc<br />
43.33c<br />
58.94a<br />
69.47a<br />
72.2a<br />
63.67ab<br />
79.33ab<br />
89.33ab<br />
83ab<br />
105a<br />
86ab<br />
62.67ab<br />
67.67ab<br />
75.67ab<br />
44.67ab<br />
62ab<br />
54ab<br />
40.67b<br />
33.33b<br />
56ab<br />
P Fwt (g)<br />
204.22a<br />
216.44a<br />
187.89ab<br />
163.67bc<br />
131.22c<br />
173.66a<br />
192.34a<br />
176.07a<br />
196.33ac<br />
216.67ab<br />
199.67ac<br />
210.33ac<br />
231a<br />
208ac<br />
182.33ae<br />
187.67ae<br />
193.67ad<br />
153be<br />
183.67ae<br />
154.33be<br />
126.33de<br />
142.67ce<br />
124.67e<br />
S no/P<br />
3.67a<br />
3.87a<br />
2.72b<br />
2.83b<br />
2.45b<br />
2.89a<br />
2.98a<br />
3.45a<br />
3.56ac<br />
2.9bc<br />
4.56a<br />
3.76ab<br />
3.5ac<br />
4.36a<br />
2.56bc<br />
3.36ac<br />
2.23c<br />
2.23c<br />
2.7bc<br />
3.56ac<br />
2.36bc<br />
2.43bc<br />
2.56bc<br />
0.0 M<br />
2x10 -6 M<br />
2x10 -3 M<br />
0.0<br />
2x10 -6 M<br />
2x10 -3 M<br />
0.0 M<br />
2x10 -6 M<br />
2x10 -3 M<br />
0.0 M<br />
2x10 -6 M<br />
2x10 -3 M<br />
0.0 M<br />
2x10 -6 M<br />
2x10 -3 M<br />
Parameters<br />
Aquadulce<br />
Syrian<br />
Taka357<br />
<strong>Two</strong>waytha<br />
Babylon<br />
0.0 ABA<br />
2x10 -6 M ABA<br />
2x10 -3 M ABA<br />
Aqudulce<br />
Syrian<br />
Taka 357<br />
<strong>Two</strong>waytha<br />
Babylon<br />
** S no/P = seed number per pod; P Fwt = plant fresh weight with pods (g.plant -1 ); M Pwt = weight of mature<br />
pods (g.plant -1 ); P dwt = pod dry weight (g.plant -1 ); P I wt = pod integument weight(g.plant -1 );<br />
W100 = weight of 100 seeds (g).<br />
* Figures of unshared characters are significant (Duncan, 0.05).<br />
010
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