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Subject: Forestry × Author: Ravi Kant × End date: 2012 × Thesis Type: M.Sc ×
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    ThesisItemOpen Access
    Studies on seed germination and storability of Rohida
    (CCSHAU, 2008) Ravi Kant; Bimlendra Kumari
    The present investigation was carried out on Rohida seeds. The seed material was collected from four different seed sources viz., Churu, Ding Mandi, Jhumpa and Rajgarh. The present study was conducted during 2005-06 at nursery area of Department of Forestry and laboratories of Department of Seed Science and Technology and Department of Forestry CCS HAU, Hisar. The objective of investigation was: To evaluate different seed sources for seed viability, germination and seedling growth behavior; To determine the storability of Rohida seed. Various morphological characters of Rohida trees from four different geographical locations were recorded and seeds were collected from the selected trees. Seed quality parameters such as seed size (length and breadth), colour, test weight, germination percent (74 %), speed of germination (13.63 %), radicle (6.30 cm) and plumule length(5.30 cm), seedling dry weight (415.60 mg), dehydrogenase activity (1.40), electrical conductivity vigour index I and II were studied of freshly harvested seeds and then stored in ambient storage conditions. The seeds of all the four different places were aged artificially at various time (24, 48 and 72 h) and temperature (40±1oC) variables. Accelerated ageing of seeds for 24 h at 40±1oC produced a clear separation and provide better results. Then seeds of all the four different places were tested to study physiological basis for loss in viability. It was observed that standard germination, seedling length, dry weight, vigour index I, vigour index II and viability percentage was found maximum in Rajgarh seed source.