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Subject: Floriculture and Landscaping × Author: Brar, Jagseer Singh × End date: 2019 × Start date: 2014 × Type: Thesis × Thesis Type: M.Sc ×
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    Effect of IBA and planting time on propagation of Rose (Rosa hybrida Vill.)
    (Punjab Agricultural University, Ludhiana, 2017) Brar, Jagseer Singh; Dubey, R.K.
    The present study entitled, “Effect of IBA and planting time on propagation of rose (Rosa hybrida Vill..)” were carried out at Landscape Nursery, Punjab Agricultural University. Rose is the number one cut flower of the world, belonging to family Rosaceae, genus Rosa. The conventional method of rose propagation involves budding on one year old field established rootstock plants. For multiplication of plants, cutting is simplest way of propagation for desirable varieties. There are relatively few varieties that develop roots, so exogenous application of growth promoters is essential. In order to study the effects of different concentrations of IBA (0, 500, 1000 and 1500 ppm) on rooting of different varieties (English Holiday, Eiffel Tower, Don Don, Confetti and Iceberg) of rose during planting times viz. February, July, October and December, an experiment was conducted in factorial completely randomized design (FCRD) using semi-hardwood cuttings. It was found that 500 ppm IBA resulted in maximum number of roots (15.66), number of leaves (22.33), the percentage of survival (50%), shoot length (13.23 cm), fresh weight of roots (4.80 g), leaves (8.13 g) and stem (5.93 g), dry weight of roots (4.36 g), leaves (5.13 g) and stem (4.33 g) and took minimum days (13) for leaf bud initiation whereas maximum root length (7.80 cm) was found in 1000 ppm IBA, but control treatment had the lowest effect on the traits of rooting in rose cutting. Among different varieties, Eiffel Tower was found to be best in terms of different traits, whereas variety English Holiday and Confetti didn't respond to any of the planting times and treatments. Cuttings planted in February showed the highest effect on their evaluated traits with a significant difference with those planted in July and October, whereas in December planting time, zero survival rate was observed.