The Influence Of Priming Two Cucumber Cultivar Seeds

J. Duhok Univ. Vol.13, No.1, (Agri. And Vet. Sciences) Pp 60-69, 2010
06
EFFECT OF SOME TREATMENTS ON VAS LIFE
OF Rosa cv. Queen elizabeth FLOWERS
HADAR SAEED FAIZY AL-MIZORY
Dept. of Hortiscinse, College of Agricultural, University of Duhok, Kurdistan Region-Iraq
(Received: April 8, 2010; Accepted for publication: October 11, 2010)
ABSTRACT
Five years old Rosa cv. Queen Elizabeth flowers were taken from shrubs grown in Agricultural College gardens at
the University of Dohuk. The length of cut flowers petule was estimated at 50-70 cm. The effect of flowers cutting
stage was studied on vase flowers age stage of non opening sepals, stage of semi opened sepals, stage of non opening
petals, stage of semi opened petals and the stage of full petals opening interacted with three different methods of cut
flowers, cutting the flowers and putting them in water after 10 minutes, cutting the flowers and putting them directly
in water and cutting the flowers under water directly.
The experiment was arranged according to factorial randomized complete design in four replicates and 15 flowers
for each replicate. The highest percentages mean of petals falling down at petals full opening and at semi opened
petals were recorded (97.35%). Flowers’ cutting at the stage of non opening petals was better and the mean
percentage of petals fulling down was 55.55%. Whereas, the flowers were declined and the mean of petals falling
down percentage was 90.83%, when they were cut and put in water after 10 minutes. While the percentage of petals
falling down was better when the flowers were cut under water directly (72.57%). Cutting flowers at full opening
stage for cutting the flowers and putting them in water after 10 minutes and cutting the flowers and putting them
directly in water gave 100.00% petals falling down as compared with those cut under water (92.06%) for the same
treatment. The lowest petals falling down percent was 43.74% which was recorded while cutting flowers at the stage
of non opening sepals and those cut under water directly .
A
INTRODUCTION
rose is a perennial flower shrub or vine
of the genus Rosa, within the family
Rosaceae, which contains over 100 species and
comes in a variety of colors. The species form a
group of erect shrubs, and climbing or trailing
plants, with stems that are often armed with
sharp prickles. Most are native to Asia, with
smaller numbers of species native to Europe,
North America, and northwest Africa. Natives,
cultivars and hybrids are all widely grown for
their beauty and fragrance (Britannica Online
Encyclopedia, 2007).
Roses are one of the oldest known flowers
and are grown in many countries of the world,
and are one of the most favorite ornamental
plants because of the beauty of its flowers,
aromatic with different colors and shapes that
live long after the cutting in addition to the
volatile oils. The production and trade of cut
flowers from the important issues of our time,
and it is no doubt that it occupies a prominent
place in the economies of many countries of the
world, especially the developed countries
concerned with the education and the production
of cut flowers.
Flowers are extremely perishable maintaining
their physiological functions vary actively even
after harvest, and the beginning of their
senescence very often depends on ethylene. A
rise in ethylene production that accelerates
senescence has been found in cut carnations and
roses (Quesada and Valpuesta, 2000).
Ichimura et al,. (2005) found that saponin(s)
was extracted from tea seeds, and its effect on
the vase life, transpiration from leaves and
hydraulic conductance of stem segments in cut
roses (Rosa hybrida L. cv. Sonia) were
investigated. The continuous treatment with teaseed
saponins (TSS) at 20 mg/ L significantly
extended the vase
life of cut rose flowers, flowers at normal
harvest maturity (sepals starting to reflex)
Moreover (Liao et al., 2000) also reported
that the postharvest quality of cut flowers Rosa
hybrida L. cv. Diana was affected by a treatment
of sucrose when Flower longevity was 7.4 ± 0.8
(days) at 120 (g/L) concentration , While
Flower diameter was 4.5 ± 0.3 (cm) at STS (0.2
mM) + sucrose (120 g/ L) +HQS( 200 mg/L)
concentrations when the flowers taken at Halfopen
stage
The aim of this study is to know the best age and
way to harvest, thereby prolonging the vaslife of
flowers after post harvesting.
MATERIALS AND METHODS
This experiment carried out in the ornamental
plants laboratory of Department of Horticulture/
College of Agriculture/ University of Dohuk,