Influence of Environmental Factors on Tetraspores Shedding and Diurnal Periodicity in Padina tetrastromatica Hauck. (Phaeophyceae) along the Visakhapatnam Coast, East Coast of India
Journal Title: Scholars Academic Journal of Biosciences - Year 2014, Vol 2, Issue 11
Abstract
Studies on the tetraspores shedding were made for a period of one and half year from August 1993 to January 1995 in Padina tetrastromatica growing along the Visakhapatnam coast. Experiments were conducted on the effect of environmental factors such as exposure to air (desiccation), Salinity, light intensity, photoperiod and wavelength on tetraspores shedding and diurnal periodicity was studied under laboratory conditions. The spore shedding in this brown alga with peak shedding of tetraspores in submerged conditions of fronds, 35%o salinity, 1000 lux light intensity, white light and 24h light (at low light intensity of 1000 Lux) were found to be optimum conditions for peak shedding of tetraspores in Padina tetrastromatica growing along the intertidal region of Visakhapatnam Coast. Environmental parameters such as exposure to air, salinity and different wavelengths did not affect the diurnal periodicity in Padina tetrastromatica. But periodicity in tetraspores shedding was changed in different light intensities and different light and dark cycles.
Authors and Affiliations
Appa Rao, D.
Keywords
Related Articles
- EP ID EP378619
- DOI -
- Views 66
- Downloads 0
Comparative Evaluation of CD4/CD8 Ratio and Absolute Eosinophil Count in Chronic Periodontitis Patients versus Healthy Subjects -A Clinico-Biochemical Study
Periodontal disease results from an interaction between the host’s defense mechanisms and the microorganisms that constitute the dental plaque biofilm. Therefore, the progression and severity of the disease are strongly...
Cutis Verticis Gyrata in a Newborn with Turner syndrome
Abstract:Cutis verticis gyrata (CVG) is hypertrophy and folding of the skin of the scalp presenting as gyrate or cerebriform pattern. It may be primary (essential or non-essential) or secondary to a number of diseases. C...
Medicinal and edible tubers from fourty two settlements of Tribals from Pechiparai Social forest in Kanyakumari District, India
The present study documents the traditional knowledge of medicinal plants that are in use in Pechiparai hill ranges in Kanyakumari district, Tamilnadu, India. Tuber crops are cultivated by tribals and resource poor farme...
The Diagnostic Implications of Aberrantly-Methylated Tumour Suppressor Genes RAR2 and 3-OST-2 – Captured from Cell-Free DNA in the Serum – in Breast-Cancer Diagnosis
Abstract:Epigenetics has emerged as one of the most-exciting frontiers in the study of the human carcinogenesis. Promoter CpG islands (CGIs) hypermethylation is an important epigenetic change associated with silencing th...
Quantitative trait locus detection associated with kernel length in maize
Mo17 and Huanzaosi are two elite maize (Zea mays L.) inbred lines, and widely applied in breeding cultivation varieties and realizing genetic mechanism in China. In this presented study, a recombinant inbred line (RIL) p...