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Effects of Time of Sowing on the Quality of Pea Seed

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Author(s): A.B. Siddique | D. Wright | S.M. Mahbub Ali

Journal: Journal of Biological Sciences
ISSN 1727-3048

Volume: 2;
Issue: 6;
Start page: 380;
Date: 2002;
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Keywords: Peas | seed | sowing date | viabillity | vigour

ABSTRACT
An experiment was conducted to identify the effect of time of sowing on the quality of pea seeds. Eight sowing dates from 01.03.99 to 07.06.99 with an interval of fifteen days were tested for covering a wide range of environmental variations. Seed quality was determined by using germination percentage, emergence percentage, controlled determination test (ageing test) and electrical conductivity test. Starch, protein, water soluble carbohydrate and fat percentages of seeds from four selected sowings were also determined. Germination percentage of unaged seeds obtained from sowing 1 to 5 i.e., from 1-3-99 to 26-4-99 was high and similar and then decreased. This decrease was only significantly lower of seeds obtained from last sowing date (07.06.99). Vigour of aged seeds was markedly lower in 1, it then increased and was relatively constant between 2 and 5 (15.03.99 and 26.4.99) and after that it decreased to 8%. In all treatments emergence percentage of unaged seeds was over 70%, but in aged seeds, emergence percentage was decreased markedly after 5.

Tango Jona
Tangokurs Rapperswil-Jona

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