[Prediction of the relative seed storage life of maize (Zea mays L.) in a gene bank]
1997
Muminovic, J. | Radovic, G. | Jelovac, D. (Institut za kukuruz "Zemun Polje", Beograd - Zemun (Yugoslavia))
Maintaining the integrity and variability of conserved material is a priority task of a gene bank. The experiment was conducted in order to determine maize seed storage behaviour, under medium-term storage conditions (0-4 deg C, 50-60% relative humidity) of the Gene Bank for Maize at the Maize Research Institute "Zemun Polje" in Belgrade - Zemun (Yugoslavia). Eleven accessions of different genetic composition (four local populations, four inbred lines, and three synthetic populations, developed during the pre-breeding program) were studied. The accessions also differed regarding storage period, moisture content and initial viability (viability at the beginning of storage). The experimental values of seed viability were determined by a standard germination test. Theoretical germination rates were derived in accordance with a mathematical model proposed by Ellis and Roberts (1980a, 1980b). Statistical test showed no significant differences between experimantal and theoretical values in any of the accessions, except in the case of inbred line L2. The applied mathematical model may be employed in the prediction of viability loss in conserved germplasm. Destructive germination tests can thus be avoided and the initial variability of the accessions maintained for much longer periods.
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