Seed Source Variations and Pre-germination Treatments Regulates Quality Plant Production in Prosopis cineraria (L) Druce for Restoration of Salt- affected Landscapes
Seed source variations and pre-germination treatment studies in Prosopis cineraria
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Authors
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Neha Saini
ICAR, Central Soil Salinity Research Institute, Zarifa Farm, Kachhwa Road, Karnal, Haryana, India-132 001
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R Banyal
ICAR-Central Soil Salinity Research Institute (CSSRI), Karnal, India
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Bimlendra Kumari
Department of Forestry, CCS HAU, Hisar, Haryana, India
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Naresh Kaushik
Department of Forestry, CCS HAU, Hisar, Haryana, India
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Kajal
Department of Forestry, CCS HAU, Hisar, Haryana, India
Keywords:
Seed germination, Prosopis cineraria, scarification, seed dormancy, seed source, vigour indexAbstract
Khejri (Prosopis cineraria) holds significant place in the economy of the desert ecosystems at large and salt affected landscapes in particular. The presence of hard seed coat is the major impediment in its way of propagation from the seeds, only viable means for it mass multiplication. Hard seed coat is to be broken and /or soften with pre-treatments prior to sowing for having rapid, uniform and high germination. The study was conducted by taking four sources of seed collection i.e. two from Haryana (Hisar and Bhiwani) and two from Rajasthan (Churu and Hanumangarh) with two types of pre-treatments; (1) mechanical scarification with scarifier (1, 1.5, 2.0, 2.5 and 3.0 minutes) and (2) chemical scarification with hot water (20, 25, 30, 35, 40 and 45 minutes) and sulfuric and hydrochloric acids for 5, 10, 15, 20, 25 and 30 minutes duration. It was found that mechanical scarification with scarifier for 1.5 minutes gave highest germination (88.5%) followed by sulfuric acid for 15 minutes (78.8%), hot water for 30 minutes (70.5%) and HCl for 15 minute (67.7%). The results show that mechanical scarification with scarifier for 1.5 minutes and chemical scarification with sulfuric acid at 15 minutes were reported to be best and gave better values of morphological and physiological parameters. Similarly, other tested germination parameters of vigour index- I (2155.4) and vigour index- II (4120.9) found maximum in mechanical scarification at 1.5 minutes duration. The seed vigour parameters of seed length (5.8-6.7 mm), seed width (4.4-4.7 mm), seed thickness (2.2-2.4 mm) and test weight (56-65 g) were also recorded. The seeds collected from Churu provenance were better than other three sources in terms of morphological and germination attributes. The study recommended that seeds of Prosopis cineraria may be collected from Churu, Rajasthan for the production of quality planting stock with higher seed-seedling ratio and to rehabilitate salt-affected lands through bioremediation approaches for improving the production function.
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