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Publication Date
1981
Description
Production of tropical forage·lme seeds is expensive. Very often, the establishment of mixtures is difficult because of lack of uniformity in vigor and germination of the legume seed. Treatment with chemical compounds has been reported to be useful in breaking dormancy. The packing material and temperature of storage have also been reported to affect seed vigor and germination. The following treatments were applied to recently harvested seeds of tropical kudzu (Pueraria phaseoloides [Roxb.) Benth.), clitoria (Clitoria ternatea L.), centrosema (Centrosema pubescens Benth.), siratro (Macroptilium atropurpureum DC. Urb.), and desmodium (Desmodium intortum [Mill.) Fawc. and Rendle): concentrated sulfuric acid (96 % ) for 5 minutes at the beginning of the experiment (prestorage), concentrated sulfuric acid for 5 minutes at planting time, and hot water at 80°C for 20 minutes at planting time, with untreated seeds being used as controls. The seeds were packed in paper and plastic (polyethylene) bags and stored in the greenhouse (28° C average temperature) and in the coldroom (8°C average temperature). The seeds were germinated in a moisture- and temperature-regulated germinator (27° C and 95 % moisture) every 20 days for a period of 6 months. Results were recorded 5 days after planting (vigor) and 20 days after planting (germination). Results indicated that vigor and germination increased with scarification treatment in most of the studied species. The best overall results were gained by soaking the seeds in hot water for 20 minutes. In general, seeds stored in plastic bags at high temperatures broke dormancy faster than seeds stored in paper bags or at low temperatures. Treatment with sulfuric acid does not present any significant advantages over soaking in hot water for most species.
Citation
Cabrales, R and Bernal, J, "Effect of Different System of Seed Treatment, Packing, and Storage on Vigor and Germination of Five Tropical Forage Legumes" (1981). IGC Proceedings (1981-2023). 5.
(URL: https://uknowledge.uky.edu/igc/1981/section2/5)
Included in
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Effect of Different System of Seed Treatment, Packing, and Storage on Vigor and Germination of Five Tropical Forage Legumes
Production of tropical forage·lme seeds is expensive. Very often, the establishment of mixtures is difficult because of lack of uniformity in vigor and germination of the legume seed. Treatment with chemical compounds has been reported to be useful in breaking dormancy. The packing material and temperature of storage have also been reported to affect seed vigor and germination. The following treatments were applied to recently harvested seeds of tropical kudzu (Pueraria phaseoloides [Roxb.) Benth.), clitoria (Clitoria ternatea L.), centrosema (Centrosema pubescens Benth.), siratro (Macroptilium atropurpureum DC. Urb.), and desmodium (Desmodium intortum [Mill.) Fawc. and Rendle): concentrated sulfuric acid (96 % ) for 5 minutes at the beginning of the experiment (prestorage), concentrated sulfuric acid for 5 minutes at planting time, and hot water at 80°C for 20 minutes at planting time, with untreated seeds being used as controls. The seeds were packed in paper and plastic (polyethylene) bags and stored in the greenhouse (28° C average temperature) and in the coldroom (8°C average temperature). The seeds were germinated in a moisture- and temperature-regulated germinator (27° C and 95 % moisture) every 20 days for a period of 6 months. Results were recorded 5 days after planting (vigor) and 20 days after planting (germination). Results indicated that vigor and germination increased with scarification treatment in most of the studied species. The best overall results were gained by soaking the seeds in hot water for 20 minutes. In general, seeds stored in plastic bags at high temperatures broke dormancy faster than seeds stored in paper bags or at low temperatures. Treatment with sulfuric acid does not present any significant advantages over soaking in hot water for most species.
