TY - JOUR
AU - ABDALLA, F., H.
AB - Abstract The viability of seeds of barley, broad beans, and peas has been examined in hermetic storage over a range of temperatures from 25° to 45° C and over a range of moisture contents from about 12 to 18 per cent. It was found that the survival curves under nearly all conditions can be described as negative cumulative normal distributions. Under very severe storage conditions, however, when the mean viability period is of the order of a week or less, the survival curves may become slightly skew. The spread of the distribution is linearly proportional to the mean viability period. There is a negative linear relationship between log mean viability period and both temperature and moisture content. Because of these relationships it is possible to predict the percentage germination of these species after any given period under a wide range of storage conditions. This pattern of loss of viability in barley, broad beans, and peas is consistent with that previously shown for wheat and rice. Oxygen has been shown to have a deleterious effect on the viability of barley, beans, and peas. Most of the deleterious effect is produced by increasing the oxygen level from 0 per cent (nominal) to 21 per cent at atmospheric pressure; a further increase to 100 per cent has comparatively little effect. The deleterious effect of oxygen is more pronounced at high moisture contents. Experiments at a low moisture content (12 per cent) have demonstrated that the effect of oxygen is independent of the activity of micro-organisms. There is also some indication that the effect of oxygen is independent of the rate of seed respiration. The gas-exchange of pea seeds has been investigated in hermetic storage at 25° C and 18.4 per cent moisture content. The seeds showed a constant rate of gas-exchange and a constant R.Q. (0.63) over a period of time during which the concentration of oxygen decreased from 21 to I.4 per cent and the carbon dioxide concentration rose from 0.03 to 12 per cent. This content is only available as a PDF. Author notes 1Present address: Agronomy Department, University of Assiut, Assiut, Egypt, U.A.R. © OXFORD UNIVERSITY PRESS
TI - The Influence of Temperature, Moisture, and Oxygen on Period of Seed Viability in Barley, Broad Beans, and Peas
JO - Annals of Botany
DO - 10.1093/oxfordjournals.aob.a084202
DA - 1968-01-01
UR - https://www.deepdyve.com/lp/oxford-university-press/the-influence-of-temperature-moisture-and-oxygen-on-period-of-seed-0Lw6bZ4iSJ
SP - 97
EP - 117
VL - 32
IS - 1
DP - DeepDyve
ER -