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H. S. Grewal ¹, Kushal Singh ²

Affiliations
1 Department of Floriculture and Landscape, Punjab Agricultural University, LLudhiana Punjab, IN
2 Department of Floriculture and Landscape, Punjab Agricultural University, Ludhiana Punjab, IN

Abstract

In Bougainvillea peruviana cv. Shubra, hardwood cuttings were given quick dip treatment with various concentrations of NAA, IBA and their combinations. The treatment of cuttings with IBA2000 ppm (60.00%) was significantly better than the control and all the other treatments with respect to ischolar_maining of cuttings (i.e. per cent ischolar_maining 60.00%, average number of ischolar_mains per cutting 8.55 and average length of ischolar_mains 36.92 cm) and establishment of the plants (55.50%), irrespective of the method of plantation. Among the method of plantation i.e. polybags and sand beds, the differences were non-significant with respect to per cent ischolar_maining, however, average number of ischolar_mains per cutting (6.09) and average length of ischolar_mains (30.46 cm) was significantly more in the cuttings planted in sand beds than polybags and establishment of plants was significantly more in the cuttings planted in polybags (28.07%) than the sand beds (23.40%), irrespective of growth regulator treatment

Keywords

bougainvillea, Hardwood Cuttings, Plant Growth Regulators

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Kushal Singh ¹, Ranjit Singh ¹

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

Abstract

Spikes of gladiolus cv. White Prosperity were harvested at four stages of floret development viz., S1- tight bud stage (when 1-2 basal florets showed color); S2-when 5-7 florets showed color; S3- when basal floret was half open; and S4- when one basal floret was fully open. The spikes were subjected to wet refrigerated storage at 4±0.50C for 3, 6, 9, 12, 15 and 18 days. Increase in storage duration hastened opening of the basal floret, increased vase life and per cent opening of florets on the spike. The spikes harvested at S1 exhibited the minimum vase life and floret opening. The spikes harvested at S2, S3 and S4 exhibited long post-storage vase life and opening of florets and were hence, found suitable for storage. In case of S2 spikes, the florets did not exhibit complete opening till 9 days of storage. The spikes harvested at S3 and S4, however, exhibited an early opening of the basal floret i.e. after 3 to 6 days of storage and hence, could only be used for local marketing because open florets on the spike are highly prone to damage during transport. The spikes harvested at S1 exhibited maximum starch content. These spikes also showed low levels of total as well as reducing sugar content in the tepols which exhibited increase in the spikes harvested at S2, S3 and S4.

Keywords

Gladiolus, Storage, Stages of Harvest

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H. S. Grewal ¹, Kushal Singh ¹

Affiliations
1 Department of Floriculture and Landscape, Punjab Agricultural University, Ludhiana Punjab, IN

Abstract

In rose cv. Raktagandha, plant survival was significantly more in conventional method (88.19 %) than cuttage-buddage (43.33 %), although the later was more useful in large scale propagation. The treatment of budded cuttings with IBA 2000 mg/l resulted in significantly more plant survival (77.96%) as compared to the control (64.44%). The treatment of budded cuttings with IBA 2000 mg/l and IBA 3000 mg/l were at par with respect to plant survival. The plant survival was significantly more (77.76%) in bud treatment with BA 50 mg/l as compared to the control (74.81%). The ischolar_maining of cuttings and bud take was significantly more under protected condition as compared to the open conditions resulting in higher plant survival.

Keywords

Rose, Propagation, Cutting-buddage, Growth Regulator

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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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Kushal Singh ¹, Manish Kumar ¹, Ashok Ponram ¹, Hari Prasad ¹, Arjun Vedadri ¹

Affiliations
1 Defence Research & Development Laboratory, Hyderabad, IN

Abstract

There are a variety of technologies for digitally acquiring the shape of a 3D object. Broadly it can be classified in two categories i.e. contact and non-contact. The Laser technology which falls under non contact type active scanning technique uses Time-of-flight or triangulation 3D laser scanner to probe the object. In Laser Scanning data is collected by a computer and recorded as data points within three-dimensional space, with processing this con be converted into a triangulated mesh and then a Computer-aided design model, often as Nonuniform rational B-spline surfaces. This paper presents the evolved measurement methodologies with the help of CMM, Portable Laser Scanner and other conventional measurement instruments to generate 3D CAD models & engineering drawings and evaluate the critical parameters for missile subsystems.

Keywords

Laser Scanning, CAD Model, Digitization, Metrology.

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