PJB-2019-552
Influence of Storage Durations and Temperature on Germination of Twelve Buffelgrass (Cenchrus ciliaris) Genotypes
Mohamed I. Motawei
Abstract
This investigation was conducted in Lab of Plant Production and Protection Department, Collage of Agriculture and Veterinary Medicine, Qassim University. In the present study seed germination response of 12 buffel grass genotypes (9 collected accessions and three introduced buffelgrass varieties) were tested to record the various effects of storage durations and temperature treatments on seed germinability. Five constant temperature treatments (15, 20, 25, 30 and 35°C) and two storage durations (12 and 24 months) were used. Constant temperature treatments were done by the 2-way Grant’s thermogradient plate. The experimental was randomized complete block design, with three replications. Highly significant variations (P < 0.001) due to temperature treatment and plant genotypes were found, while no significant variation was observed between storage durations. The highest germination percentage for five constant temperature regimes was recorded at temperature 25°C (19.58 %), while the lowest one was recorded at temperature 15°C (6.25%). The studied buffelgrass genotypes responded differently to the different storage durations and temperature regimes, suggesting the importance of genotypes assessment under different environments. No germination occurred at low constant temperatures (15°C) on the thermogradient plate for USA and ALM and at high constant temperatures (35°C) for Biloela cultivar. The highest germination percentages were recorded for BUR-1 at 20°C (45%), UIA at 25°C (43.3%) after 12 months. Biloela cultivar was the lowest values of germination percentages.
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