Effects of gibberellic acid on growth of oak (Quercus brantii var. persica) seedlings

Document Type : Research Paper

Authors

1 Research Center of Agricultural and Natural Resources of Fars. P.O. Box: 71555-617, Shiraz, Iran

2 Research Center of Agricultural and Natural Resources of Fars. P.O. Box: 71555-617, Shiraz, Iran.

3 Besat Higher Education Center

Abstract

To determine the height enhancement of Quercus brantii var. persica seedlings in the early growth stage, an experiment was performed in a randomized complete block design, with 4 replications, using eight gibberelic acid concentrations (0, 100, 300, 600, 900, 1200, 1500 and 1800 ppm). For every treatment in each replicate, 192 and totally 768 pots were used. The seedlings (from 4 to 6 leaf stages) were treated using gibberellic acid (GA3). Several parameters such as survival percentage, length and dry weight of roots and stems and number of leaves were measured five times during growth season. Results showed significant GA3 effects p<0.01 on stem length and dry weight. The highest stem length (36 cm) was observed at 1200 ppm of GA3 which was 3 times more than that of control (0 ppm). The highest root length and dry root weight were obtained at control level.

Keywords

References

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Iranian Journal of Rangelands and Forests Plant Breeding and Genetic Research
Volume 15, Issue 3 - Serial Number 29
November 2007
Pages 253-264

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