الفهرس 
Effect of storage treatmentsOnly 14 pages are availabe for public view
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Abstract
The present work (two experiments) was carried out throughout two successive seasons (1 997/98 and 1998/99) at the nursery of Qubba Botanical Garden Qubba Palace, Cairo, and the Laboratory of Horticult~u-e Department Faculty of Agriculture, Kafi El-Sheikh, Tanta University . The first experiment was conducted, to study the individual and combined effects of different storage treatments (1.1.5 and 2 months ) at 5OC besides room temperature storage and light intensity on growth , flowering , bulbs productivity and anatomical development of stem apex after storge treatments and after planting of Polianthcs uherosub ulbs . Whereas the second experiment was performed to study the individual as well as the combined effects of different bulb sizes ( 8,9 and 10 cm circumference ) and different gowing media on growth , flowering , bulbs productivity and total carbohydrates and nitrogen of the produced bulbs of I’olianfhw luberosu L. plants . The following results were obtained : The first Experiment 1. Insignificant effect for light intensity on sprouting was recorded , while , cold storage for two months at 5 C delayed sprouting comparing with room storage . The combined effect of planting room stored bulbs under 65 % shading condition recorded the least time for sprouting comparing with other treatments . 2. Planting tuberose under 65 % shading increased vegetative growth, while , cold storage preplanting at 5 O C for two months decreased it . The combined effect of planting room stored bulbs or cold stored b~llbs at 5 C for one month under 65 % shading, resulted the tallest vegetative growth comparing with the other treatments . 3. Planting the bulbs under 65 % shading induced earlier flowering , decreased splke yield , number of florets / spike , but it produced , the tallest , the heaviest and thinnest sprkes . The contrary was observed under full sunlight . 4. The different cold storage duration tented to a steady delay of flowering and gradual decrease in number of florets / spike and fresh weight of spike . Moreover, cold storage for two months, gave the least spikes yield , the shortest and thinnest spikes . The contrary action was observed with room storage . 5. The combined effect of planting room stored bulbs and 65 % shading , produced the earliest flowers , while the latest flowers were produced by planting cold stored bulbs at 5’ C for 2 months under fidl s~lnligh.t However ,the highest spikes yield and number of florets/ spike and the thickest spikes were resulted by planting room stored bulbs or those stored at 5 O C for one month under full sunlight .Moreover , planting room stored bulbs under 65 % shading gave the tallest and the heaviest spikes . 6. A considerable decrement in bulbs and bulblets yield and bulblet fresh weight was obtained due to using shading condition but it increased bulb fresh weight and bulb size when compared with full sunlight condition .On the other hand , cold storage at 5 O C for 1.5 or 2 months decreased bulbs and bulblets yield , bulb size and bulb and bulblet fresh weight ,However, the contrary action was observed due to using room storaie or cold storage for one month . The combined effect showed that , the hightest bulbs and biilblets yield and bulblet ii-esh weight was observed by planting room stored bulbs or that stored at 5’ C for one month under full sunlight . However the heaviest and largest bulbs were produced by planting room stored bulbs under 65 % shading . 7. Stem apex of room stored bulbs at planting date , showed an early indication for flower bud initiation , while the other treatments were 1 still growing in vegetative stage . On tlie otlier hand , after one month from planting , stem apex of bulbs grown under 65 % shading showed more devloplnent comparing with those grown under full sunlight . However , stem apex of room stored bulbs grown under shading showed an indication for advanced flower bud initiation than.