Evolutionary Developmental Biology (Evo-Devo)
Ebadi, Mostafa .
The Study on Effects of Some Growth Regulators on Vegetative Function and Production in Parthenocarpic Cucumber (Cucumis sativa L.) in Greenhouse.
Recently green house production of cucumber (Cucumis sativa L.) has been increased enormously in I.R.Iran and other parts of the world. This study was conducted to investigate the effects of two exogenous plant growth regulators, IAA and GA3, on production, vegetation, and infrastructure of parthenocarp cucumber (Cucumis sativa), Holland Royal Star cultivar, in greenhouse conditions. Two concentrations of 100 and 500 ppm of IAA and GA3, alone or in combination, was sprayed every week on the plants from when they have 4 leaves and followed for 24 weeks. Experiments carried out in a 4 complete randomized blocks, each comprising 9 parts: 8 treatments and one for control. Each part included 8 plants in 2 square meters. Vegetative and reproductive factors such height, number of leaves, male and female flowers, and number of fruits was measured every week and the data was analyzed using ANOVA. Study on infrastructure of plants was carried out using conventional methods. Results showed that the combination of 500 ppm IAA and 100 ppm GA3 led to produce significantly more vegetation and female flowers (p < 0.01) in which number of fruits was 2.78 times more than control. Interestingly, significantly (p < 0.011) more male flowers appeared when the combination of 100 ppm IAA and 500 ppm GA3 used. The hormone treatments have caused different infrastructural alteration in various parts of the plants such cortical and pith parenchymas, xylem vessels, and structural tissues. The results of this study could be applied in green houses to increase production of cucumber. Key words: Cucumis sativa, IAA, GA3.
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1 - Islamic Azad University, Aliabad Katoul Branch, Plany Biology, Office of Chancellor,Islamic Azad University, Aliabad Katoul Branch, Aliabad Katoul, Golestan Province, Iran
Presentation Type: Oral Paper:Papers for Topics
Date: Wednesday, July 30th, 2008
Time: 8:30 AM