The Influence Of Priming Two Cucumber Cultivar Seeds

J. Duhok Univ. Vol.13, No.1, (Agri. And Vet. Sciences) Pp 103-111, 2010
and kernel yield while plant height and kernel
yield correlation was not significant. The
characteristics (ear height, plant height , number
of ear per plant, number of days to 50% tasseling
and silking) had a direct effect on kernel yield
except number of days to 50 % to tasseling. Also
kernel yield was the only characteristic which
gave highly genotypic and phenotypic
correlation coefficient and highly heritability
broad sense (11) . The aims of the present study
were to improve the inbred lines and evaluate
the genetic variability, heritability and inter
relationship of various traits in thirteen inbred
line of maize.
MATERIALS AND METHODS
Fifteen single cross hybrids used, which were
introduce from Yugoslavia Table (1). These
hybrids were planted in the spring seasons of
years (2001, 2002, 2004, 2005, 2006, 2007) and
self pollination were done to all hybrids to get
various generations , then getting the six
generation a top cross hybridizing were done.
These generations were hybridized with
synthetic IPA5012 which has broad genetic base.
The most of these genotypes had gave highly
general combining ability (Mohammed and
Rasheed, 2009) except two genotype appeared
case of sterility. A field experiment was carried
out at the field of College of Agriculture /
University of Duhok in spring and autumn of
2008, to know the characteristics of these
genotypes and their productivity. The land was
prepared by adding the compound fertilizer
N.P.K (0.27, 27) in a rate of 400 kg/ha, then 400
kg of Nitrogen was added on two portions , half
of which is 25 days after planting and the other
is 30 days after the first portion (20) thirteen
genotypes were planted manually in rows with 5
m length , 75cm between rows and 25 cm
between plants in 20-3-2008 for spring season
and 15-7-2008 for autumn season.
The experiment was applied with three
replications according to R.C.B.D experimental
design . The data was record from 10 random
plants from each entry within replication for day
to 50% tasseling and silking, plant hight (cm),
ear hight (cm), leaf area (cm 2 ), kernel yield/
plant, ear length (cm), 300 kernel weight/ gm,
no. of row/ ear, no. of kernel/ ear, protein%,
oil% and ear diameter (cm).
The analysis of variance was carried out
according to (18) . genotypic and phenotypic
coefficient of variability , broad sense
301
heritability genotypic and phenotypic correlation
coefficient and path coefficient analysis were
computed (8) and used Duncan Multiple Range
test to comparison between the means at 0.05
probability level.
RESULTS AND DISCUSSIONS
The statistical analysis in table (1) showed
high significant differences between inbred lines
for the characters (number of days to 50 %
tasseling and silking , plant height, ear height,
leaf area, number of leave/ plant, yield/ plant and
its components , protein and oil percentage) and
also the interaction between (s×l) is high
significantly for the all characters except ear
length, leaf area and No. of row / ear are
significant at level 0.05 and the other characters
was not significant.
Table (3) shows significant differences
among inbred lines for days to 50 % tasseling .
The inbred line (11) was earlier for days to 50 %
tasseling which tasseled during (54.66) days,
whereas late days of 50 % tasseling were
recorded by line (9) that was (65.00) days. The
earlier inbred lines for days to 50 % silking were
(11) which silked during (73.66) days. The
results in same table referred to the highest plant
height observed in an inbred lines (4) and
reached (179.05 cm) while the inbred (6) and
reached (122.86 cm) was less for plant height
also the table shows that the inbred line (7)
scored a high ear height reaching (93.44) cm..
While the inbred line (3) gave the lowest ear
height (59.89) cm. The largest for leaf area was
found in inbred lines (2) and reached (541.77
cm 2 ) , whereas the less leaf area was inbred line
(6) (318.69 cm 2 ) .
The highest weight of kerenels / plant was
observed in line (12) and was (136.53 gm) while
the low weight of kerenels/plant was recorded in
line (5) (58.43 gm) . The inbred line (2) obtained
a high ear length scoring (20.73 cm) , while the
lowest ear length was observed in line (8) (15.43
cm) . The result in table (3) shows the highest
300 grain weight was observed in line (10) and
was reached 80.09 gm while the low 300 grain
weight was recorded in line (2) (58.46 gm) . The
largest mean for number of rows /ear was found
in line (4) (17.56) , whereas the less number of
rows / ear scoring (14.66) and the high number
of grains / ear was found in inbred line (3)
(745.33), the inbred line (9) obtained The lowest
mean of number of kerenel / ear (446.73). Table
(3) also shows that the inbred line (7) was