Vol. 16 No. 2
Germination ecology of Sacciolepis interrupta (Willd). Stapf
Author(s): P. S. RANI, M. V. MENONAND P. V. SINDHU
Abstract: Experiments were conducted to evaluate the effects of seasonal variations, seed treatments, temperature and light, and also the influence of different field condition, method of propagation and depth of seed burial on the germination, and development behavior of Sacciolepis interrupta. The weed possesses a high level of innate dormancy, and seeds were found to be dormant from September to April. The peak period of germination was found to be the 3rd and 4th weeks of June. Different seed treatments failed to break the dormancy in the off-season period, while in June, treatment with concentrated sulphuric acid resulted in highest germination percentage. Higher temperature of 38oC and continuous light for a period of 14 days resulted in highest germination percentage of 68%. Seeds, culm cuttings and root clumps had equal regeneration capacity. Continuous submergence was found to be ideal for seed germination. The emergence from surface sown seeds in pots was >70% and the emergence declined with increase in seeding depth. The present study, together with information on weed seed bank dynamics could be exploited for developing strategies for control and management of this weed.
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