Journal of Horticultural Sciences

Ramesh Kumar ¹, Nazeer Ahmed ¹, O. Chand Sharma ¹, Shiv Lal ¹

Affiliations
1 Central Institute of Temperate Horticulture, Srinagar-190 007 (J&K), IN

Abstract

Effect of various auxins (IBA, IAA and NAA) on different types of cuttings was investigated to determine efficacy of auxins in promoting ischolar_maining in carnation (Dianthus caryophyllus L.). Auxin and type of cutting significantly affected ischolar_maining traits. NAA was found to be more effective in promoting early ischolar_maining and inducing profuse ischolar_maining, ischolar_main number, fresh and dry weight of ischolar_mains and longer ischolar_mains. Among the auxins used, earliest ischolar_maining (18.69 days), highest ischolar_maining percentage (58.70 %), number of ischolar_mains (13.18), ischolar_main length (12.26 cm), and, highest fresh and dry weight of ischolar_mains (4.93g and 45.08 mg), respectively, were obtained with NAA @ 500 ppm. Tip cuttings responded better in ischolar_maining-characteristic of carnation - than basal cuttings, and recorded highest ischolar_maining percentage (73.02 %) and number of ischolar_mains (12.25), longest ischolar_mains (10.04cm) and maximum fresh and dry weight of ischolar_mains (4.27 g and 43.19 mg), respectively. Interaction effect of auxin and cutting type was found to the significant, and highest ischolar_maining percentage, (85.26%), number of ischolar_mains (18.36), longest ischolar_mains (14.81cm), and highest fresh and dry weight of ischolar_mains (6.85g and 68.02mg), respectively, observed with NAA @ 500 ppm in tip cuttings.

Keywords

Carnation, Rooting Efficacy, IBA, IAA and NAA.

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Parget Singh ¹, R. K. Dubey ¹, Ranjit Singh ¹, Ramesh Kumar ¹

Affiliations
1 Department of Floriculture and Landscaping, Punjab Agricultural University, Ludhiana - 141004, IN

Abstract

The present study was carried out to evaluate floribunda rose cultivars for landscape use under sub-tropical climate of the Punjab. Thirty cultivars were planted in Randomized Block Design, with three replications. Maximum plant height (53.67cm) was recorded in 'Banjaran', while plant-spread, leaf length and leaf breadth were maximum (90.83cm, 12.73cm and 9.10cm, respectively) in 'Brown Velvet'. The cv. Iceberg produced comparatively longer (2.77cm) buds. Flower size was maximum in 'Charleston' (8.37cm). Number of petals per flower was higher in 'Arunima'. Thorn density was found to be higher (42.67 per ten cm i.e., decimeter) in cv. 'St. Boniface' whereas, 'Summer Snow' and 'Ahalya' were thornless. Thorn shape was that of a hook in all the cultivars. Maximum number of flowers per plant, per unit area were recorded in 'Summer Snow' (367.85/m²), which was on par with 'Arunima' (340.32/m²), 'First Edition' (320.75/m²) and 'Thornless Beauty' (328.24/m²). Flower stalk length (82.33cm) and flower duration (141.33 days) were higher in cv. Brown Velvet. The cultivars were also evaluated for their fragrance.

Keywords

Floribunda Rose, Evaluation, Landscape.

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Kushal Singh ¹, Ranjit Singh ¹, Ramesh Kumar ¹

Affiliations
1 Department of Floriculture and Landscaping, Punjab Agricultural University, Ludhiana - 141004, IN

Abstract

Pre-storage pulsing of gladiolus spikes with a solution containing 20% sucrose and 400 mg/l aluminium sulphate [Al₂(SO₄)₃.16H₂O] significantly improved vase life, floret size and per cent opening of florets. The effect was significantly enhanced with addition of GA₃ @ 100 mg/l. Spikes pulse-treated with GA₃ could be stored for 14 days with an acceptable vase life of 5.44 days. These spikes also exhibited 49.65 per cent opening of florets even at 21 days from onset of storage. On the other hand, spikes pulse-treated with a solution containing 20% sucrose and aluminium sulphate [Al₂(SO₄)₃.16H₂O] @ 400 mg/l or water (Control) showed no opening of florets after 21 days of storage.

Keywords

Pulsing, Gladiolus, Spikes, Vase Life.

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