The viability and germination of seeds of Convolvulus Arvensis L. and other perennial weeds

Abstract

<p>From 1935 to 1939 inclusive, laboratory and field studies were made of the production, viability, impermeability, longevity and germination of seeds of Convolvulus arvensis L. and of other deep-rooted perennial weeds. A summary of the results is as follows:</p> <p>Bindweed plants, Convolvulus arvensis, produced an abundance of seed in seasons of high temperature and low rainfall. Periods of cloudy weather restricted blossoming and seed production.</p> <p>Production of normal seedlings by seeds, immediately after collection on the plants, varied from 7 to 24 percent, impermeability in the same collections varied from 28 to 91 percent and dead seeds ranged from 2 to 51 percent. The range in percentage of dead seeds in lots from 1 to 72 years old was 2 to 100.</p>