تأثير موعد الزراعة و IBA في 2.النمو الزهري و حاصل الزيت الطيار لخمسة أصناف من نبات الهياسنت Hyacinthus orientalis L.

الملخص EN

An experiment was conducted during the growing season of 2013 – 2014 in a lath house that belong to College of Agriculture , University of Basra, to study the effect of planting date , Indole butyric acid (IBA) , and cultivar on vegetative growth , flowering , bulblest formation , and oil yield of Hyacinthus plant.

.The experiment was factorial using Randomized Complete Block Design that included three factors first, two plant date (10/10/2013 and 25/10/2013), Second, three methods of IBA 200 mg.L-1 treatment ( control , bulbs soaking , and plant spraying ) , and Third five hyacinthus cultivars (Amsterdam , Carnegie , Splendid Cornelia , Marie , and Fondant) with three replicates for each treatment and four plants pertepliate .

Analysis of variance was used for statistical analysis and means was compared by Revised Least Significant difference test at 0.05 level.

Results can be summarized as follows : Plants of first planting date was superior in period of first floret opening, length of inflorescences , number of florets , vase age and oil yield.

Plants sprayed by IBA (200mg.

L-1) was superior in period for the opening of first floret, number of inflorescence, vase age and oil yield.

While plants that either their bulbs were soaked or plant sprayed by IBA at 200 mg.L-1 were superior in length of inflorescence.

Plants of Fondant cultivar were superior in most characteristics of study.

Plants of Fondant and Carnegie cultivars were superior in flowering period and length of inflorescence.

While plants of Fondant and Amsterdam were superior in period for opening of first floret.

There were a significant effect of secondary and tertiary interaction for all studied characteristics.