Do pre-sowing treatments affect seed germination in <Emphasis Type="Italic">Albizia richardiana</Emphasis> and <Emphasis Type="Italic">Lagerstroemia speciosa</Emphasis>? |
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| Authors: | Salim Azad Nerepen Kumar Paul Abdul Matin |
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| Institution: | (1) Department of Natural Resources and Environment, Faculty of Agriculture, Jordan University of Science and Technology, P. O. Box 3030, Irbid, 22110, Jordan;(2) Department of Crop Production, Faculty of Agriculture, Jordan University of Science and Technology, P. O. Box 3030, Irbid, 22110, Jordan |
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| Abstract: | In this paper, seed morphology and effects of pre-sowing treatments were studied. Matured seeds of the species were collected
from healthy trees in the National Botanical Garden, Bangladesh, and treated with five pre-sowing treatments. The average
length, breadth and thickness were found to be 0.56±0.03 cm, 0.44±0.009 cm and 0.26±0.008 cm in Albizia richardiana King and Prain, and 1.32±0.02 cm, 0.55±0.04 cm and 0.11±0.002 cm in Lagerstroemia speciosa L., respectively. Germination was carried out in polybags with a mixture of topsoil, coconut husk compost, coarse sand and
fine sand in a ratio of 3:4:1:1. Results revealed that the germination rates of seeds in different pre-sowing treatments were
significantly increased compared to those in cold-water treatment in both species. The highest germination rate was found
to be 96% in hot-water treatment followed by 87%, 83% and 49% in treatments with scarification, H2SO4 and control in A. richardiana, respectively. However, the highest germination rate (79%) was found in H2SO4 treatment followed by 64%, 62% and 25% in treatments with hot water, scarification and control in L. speciosa, respectively. The lowest germination (35% in A. richardiana and 20% in L. speciosa) was found in cold-water treatment in both cases. Analysis of variance (ANOVA) showed the significant difference among the
treatments for both species. It is concluded that hot-water treatment is recommended for seed germination of both species
in rural Bangladesh. |
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