INFLUENCE OF COLD STORAGE OF UNROOTED CUTTINGS ON SOME VEGETATIVE, ROOTING AND FLOWERING CHARACTERS OF Dianthus caryophyllus L. cvs. | ||
| Journal of Plant Production | ||
| Article 23, Volume 32, Issue 4, April 2007, Pages 2881-2894 PDF (598.71 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jpp.2007.207689 | ||
| Author | ||
| H. A. A. Hussein* | ||
| Veget. and Floric. Dept., Faculty of Agric. Mansoura University, Egypt. | ||
| Abstract | ||
| This experiment was carried out during two seasons of 1995/1996 and 1996/1997 at the Experimental Station and Laboratory of the Veget. and Floric. Dept., Faculty of Agriculture, Mansoura University, Egypt, to study the effect of cold storage of unrooted cuttings on the characters of cuttings and the obtained plants until flowering stage of Dianthus caryophyllus L. of cultivars Bianca, Festival and Salmony. The obtained results indicated that Festival cv. cuttings stored at 2-4oC for various periods showed a positive effect and significant increase in all vegetative, rooting and flowering measurements followed by Bianca cv., while Salmony cv. was the lowest in that respect in both seasons. Also the vegetative and rooting growth parameters of cuttings were linearly decreased with increasing the storage periods. However, the highest fresh weight of cuttings and vegetative growth, plant height, number of branches per plant as well as rooting percentage and fresh weight of root per plant resulted from cuttings stored for 3 months, while the lowest vegetative and rooting growth values resulted from cuttings stored for 6 months before rooting in both seasons. At harvest time, number of days until colour showing, number and diameter of flowers and the length of flowering stems were affected by the cold storage periods. Flowering characters at harvest were decreased with increasing the storage periods especially when the cuttings were stored for 6 months comparing with relatively shortest periods for 3 months in both seasons. Mortality percentage of rooted cuttings growing in culture medium has been also affected by cold storage periods. Longer storage periods of unrooted cuttings for 4, 5 or 6 months resulted in higher mortality percentages comparing with other periods, in both seasons. The obtained results revealed that the cold storage of unrooted cuttings up to 3 months at 2-4oC and 85% relative humidity in polyethylene bags was without any effect on subsequent quality and is recommended. | ||
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