Pollen Calendar Of Allahabad Up India

Aeropalynological survey of Allahabad was carried out by Nautiyal and Midha (1984) during 1973-1979. The survey was carried out mostly by gravity slide method in different areas of Allahabad City. Airspora determined at and around the Allahabad Univesity, Botany Department from Oct 1973-Sep 1974 has been depicted in Fig. 13.10d.

Fig. 13.10d Pollen calendar of Allahabad, U.P., India from Oct 1973-Sep 1974.

The pollen spectrum shows prepondance of grass pollen (Gramineae), followed by Holoptelia integrifolia and other pollen types including Cannabis sativa, Madhuca indica, Amaranthaceae, iberis amara, Azadirachta indica, Cyperaceae, Casuarina equisetifolia, Ricinus communis, Pinus roxburgii, Typha angustata, Artemisia sp., Ailanthus excelsa and others. The aeropalynological survey was later carried out again from Feb 1978 to Jan 1979 in the same city. Surprisingly the aeropollen spectrum was dominated by Pinus roxburghii followed by Holoptelea integrifolia, Gramineae and other pollen as indicated in the Pie chart (Fig. 13.10e).

Public awareness of aeroallergens: A successful attempt in Bangalore, India.

It has been proved substantially that environmental biopollution, i.e., pollution caused by bio particles or particles of biological origin indoor and outdoor has significant role to play in human health hazards. Some of these bioparticles are responsible for causing various types of allergies hence they are called as aeroallergens. The commonest 'aeroallergens' reported from Bangalore comprise of pollen produced by anemophilous plants such as Parthenium hysterophorus, Holoptelea integrifolia, Casuarina equisetifolia, Poaceae, Ricinus communis, Eucalyptus sp., Amaranthus-Chenopod. Cocos nucifera, Peltophorum pterocarpum, Syzygium sp., Cassia

Fig. 13.10e Pollen calendar of Allahabad, U.P., India from Feb 1978 to Jan 1979.

Fig. 13.10e Pollen calendar of Allahabad, U.P., India from Feb 1978 to Jan 1979.

sp., Mimosa pudica. In addition, the atmosphere is full of aeroallergens (mould spores) such as Cladosporium, Periconia, Nigrospora, Alternaria, Helminthosporium, Smut spores (Ustilaginales), Aspergillus and Penicillium, etc.

In a recent paper Agashe (2007) has emphasized the importance of predominant aeroallergens as biopollutants on human health particularly in Bangalore, India.

It has been proved experimentally and clinically that the following most common aeroallergens (biopollutants) are responsible for causing allergic disorders in the Bangalore atmosphere: Pollen of Parthenium, Amaranthus, Minosa, Grasses, Ricinus, Prosopis, Albizzia, Holoptelea. The fungal spores include Cladosporium, Alternaria, Curvularia, Helminthosporium, Aspergillus.

The above mentioned airborne pollen and fungal spores which act as biopollutants pose health hazards with respect to allergies. Their occurrence and relative abundance in the atmosphere is revealed in the pollen calendar compiled by the aerobiologists. However, it should be borne in mind that the relative abundance of pollen and spores is liable to change from year to year as it is dependent on biological factors as well as meteorological (weather) factors. Hence, it is recommended that pollen calendar should be updated every year. There appears to be a perfect correlation between higher pollen count, weather factors and prevalence of allergy.

Another classical example of importance of monitoring of aeroallergen biopollutants was thoroughly investigated in Bangalore, India. This is with regard to Holoptelea integrefolia known to produce highly allergic pollen and for a very short flowering duration. In fact there are a very few trees of this species in Bangalore.The plant flowers for only a fortnight either during late January or February each year. These trees are prolific pollen producers.

During its peak flowering Bangalore atmosphere is known to be occupied by as mush as 70% of total pollen population. Allergenicity of these airborne pollen has been clinically proved, particularly with regard to asthma.

The need for continuous monitoring of airborne pollen and fungal spores has been greatly emphasized by Agashe (2002). However, the most neglected aspect seems to be creating awareness of the results of air monitoring among the clinicians and allergy sufferers in India. In the Western countries daily pollen counts of airborne pollen and mould spores are publicized through the mass media such as radio, television and newspapers.

A fairly successful attempt has been made in this direction by Agashe and his co-research workers from the Aerobiology and Allergy Laboratory, Department of Botany, Bangalore University, Bangalore, for the first time in India and perhaps in Asia since December 1995. The awareness of pollen calendars, and atmospheric pollen and mould spore counts was created by them by publishing their results in the daily newspaper ('Times of India', Bangalore edition).

The daily pollen monitoring was done by operating the rotorod (Model - 40) sampler round the clock. The qualitative and quantitative analysis results were compiled on a daily basis and after consolidating these results for a period of one week were published in the 'Times of India' (Bangalore edition) once in a week under the captions 'Pollen Watch and Mould Watch' (Fig. 13.11).

Agashe (1999) published a comparative account of modality of reporting atmospheric pollen count in newspapers in certain major cities in the United States of America cities and Bangalore, India (Fig. 13.12).

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  • alma
    What are the allergic pollen grains found in the aerospora of Allahabad city?
    3 years ago
  • luigina
    What are allergic pollengrains in aerospora of Allahabad?
    2 years ago
  • Semere
    What are the allergic pollengrainfound in allahabad?
    2 years ago

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