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Performance of different
greenhouse cucumber cultivars (Cucumis sativus L.)
in southern Iran
A. Soleimani1, A. Ahmadikhah2* and
S. Soleimani3
1Department
of Plant Production of Jiroft Agricultural College, Kerman
University of Shahid Bahonar, Iran.
2Department
of Plant Breeding and Biotechnology, Gorgan University of
Agricultural Sciences and Natural Resources, Iran.
3Management
of Education and Training, Jiroft, kerman, Iran.
*Corresponding author. E-mail:
ahmadikhaha@gmail.com.
Accepted
31 March, 2009 |
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A 2 year
trial was conducted with 15 cucumber (Cucumis sativus
L.) varieties from diverse origins in the greenhouse
conditions (southern Iran)
to study genetic variation and to identify genetically
distant parents to be involved in a hybrid seed production
as well as to identify the most effective components of
grain yield.
However,
the
potential of identifying genetically distant parents depends
on genetic diversity of population.
The
varieties were cultivated in a randomized complete block
design (RCBD) with 3 replications for 2 years (2004 - 2006
seasons). Characters such as, yield and number of fruits in
surface unit (m2), yield in cold season, diameter
and length of stem, length and diameter of fruit were
evaluated analyzed for 2 years. Compound variance analysis
showed that there were significant differences (α = 0.01) in
yield between varieties at 2 years and the highest yield
(23.81 kg/m2) was obtained for E3215516 variety. Correlation analysis of varietal means showed that the
highest correlation (0.932) was observed between number of
fruits (NOF) and yield, and the least (0.01) between
diameter of stem (DOS) and length of fruit (LOF). Based on
factor analysis, 3 components were identified, explaining
77.5% of observed variation. Factor 1 (yield factor)
accounting for about 45% of the variation, was strongly
associated with yield, yield in cold season and number of
fruits. Factor 2 (source factor) accounting for about 18% of
the variation, consisted of stem related components
including diameter of stem (DOS) and length of stem (LOS).
Factor 3 (sink factor) accounting for about 15% of the total
variation, associated with length and diameter of fruit (LOF
and DOF). Using cluster analysis, the lines were classified
into 2 distinct classes A and B. Class B contained lines
from different origins.
Key
words:
Cucumber (Cucumis sativus L.), greenhouse, yield
comparison. |
