Abstract:
In this study was evaluated the effect of post harvest treatment with
two different conditioners on keeping quality of Alstromeria hybrida, cv.
Orange Beauty, grown in a glass-covered green house. Flowers were
harvested during morning hours when the primary florets were two days
before opening. Immediately after harvest, the flowers stem was recut at 60
cm and 24 hours pulse treatment with three variants. The control variant was
distilled water which has been used to prepare the second and the third
variant. The second variant was a solution containing dextrose, like energetic
substrate and pounded ember to prevent the attack of bacterium. The
concentration of dextrose was 2% and ember 1%. The third variant of
experimental conditioner was a solution containing 8-hydroxychinoline
citrate, to delay the senescence, dextrose like nutritious substrate and
gibberellic acid to prevent the early leaf yellowing. The concentration of
HQC was 0.2%, dextrose 2% and GA 0.02%. The whorled inflorescence of
each flower consisted five or six cymes included two or three florets. The
length of cymes for all variants was about ten centimeters. When flowers
were placed in water harvest the development of secondary florets was
delayed and the tertiary florets – if it had it, did not grow or open. At all
variants florets within the whorl opened synchronously and senescence of
primary florets occurred a day before the secondary florets open. Post
harvest pulse treatment with HQC + D + GA extended the vase life of all
inflorescence, increased the petal length of both primary and secondary
florets. Moreover, such treatment completely inhibited foliar yellowing.
