RESPONSE OF Jacoblnia carnea, NICHOLS PLANTS TO UNICONAZOLE: . I. EFFEC OF CUTtlNG TYPES, UniConzaleratea AND THEIR INTERACTION. | ||||
| Journal of Plant Production | ||||
| Article 22, Volume 28, Issue 6, June 2003, Page 4975-5003 PDF (2.11 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jpp.2003.244664 | ||||
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| Authors | ||||
| B. A. Abdel-Maksoud.1; M. G. EI-Torky1; Rabha A. Abass2; Mona A. srour2 | ||||
| 1Department of Floriculture, Faculty of Agriculture, Alexandria University. Egypt. | ||||
| 2Antonladn Research Gardens, Horticulture Research Institute, Alexandria, Egypt. | ||||
| Abstract | ||||
| Terminal and subterminal cullings of jacobinia camea, Nichols "local cullivar" were immersed for two hours in 0, 50, 90, 120. 150 and 180 ppm uniconazole solutions. The experiments were conducted during two successive seasons in a form of a split design, the main plots represented the culling types, while uniconazole rates resembled )he sub-plots. The general effects of the two factors showed that: The terminal cutting derived plants significantly surpassed the subterminal cutting derived ones by the following traits: rool numbers and length, plant height and leaf area during beth seasons, shoot numbers and dry weight, noret numbers and early nowering in Ihe ,'I season and inflorescence diameter and dry weight in the 2nd one. In both seasons, the uniconazole rates from SO to 180 ppm significantly reduced the rooling percenlage. the root numbers and length, the plant heighl. the internode length. the leaf area and the shool anci inflorescence dry weighls and delayed the nowering lime, while those of 60 and 90 ppm signincanlly reduced the innorescence diameter. Also in both seasons. the number of internodes and shoots and the inflorescence longevity were enhanced with the rates from 60 to '180 ppm. while 'he innorescence lenglh and Ihe number of norels were significanlly increased with those from 60 to 150 ppm and from 90 to 150 ppm; respectively. The leaves of the subterminal cutting derived plants significantly contained higher amounts of chlorophylr "a" and reduClnll. non-reducing artd loral sOluole sugers than those of the terminal cutting derived ones, while the roots of the laters significantly contained higher amounts of non-reducing and total soluble sugars than those of the formers. -I. The unlConazole rates (rom 60 to 160 ppm significantly increased the leaf chlorophyll "a" and ·b" and decreased non-reducing and total soluble suga~ in the leaves and rools. The reducing sugars were significantly increased in the leaves with the rales of 120 and 150 ppm and in the roots with those of 90 and 150 ppm. but were decreased in both organs with the (ate of 60 ppm. The starch was increased in the leaves with the rates. from 60 to 180 ppm and in the roots with thai of 90 ppm, but those of 60. 120.150 and 180 ppm decreased 11 in the roots. The interaction OelWeen the cul1ing Iypes and the uniconazole rates exhibited significant and highly significant effects on the studied traits except the rooting percentage and the leal chlorophyll "a", | ||||
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