Pre-treatment effect on seed germination of calopogonium mucunoides: A promising cover crop for forest land restoration and climate resilience
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Calopogonium mucunoides have been widely used as a pasture legume, cover crop and nitrogen fixing plant in tropical and sub-tropical regions. It reduces soil erosion, controls wind and water erosion; improve soil properties and adapts to wide climatic conditions. The present study investigated the effect of different pre- treatment on germination percent (GP), mean germination time (MGT), germination value (GV), peak value (PV) and germination index (GI) of C. mucunoides. The experiment was conducted at Forest Research Institute, India. Treatment used were hot water soaking for 6 hrs at 40, 60, 80 & 88 ° C; acid scarification using H2SO4 in 1, 3 & 5% concentration; sand scarification, GA3 treatment at 50 & 100ppm; KNO3 at 0.1,1 & 3%. Germination parameters such as GP (ISTA, 2010); MGT (Orchard, 1977); GV (Djavanshir & Pourbeik, 1976); PV (Czabator, 1962), and GI (Timson, 1965) of the species were measured as per the standard methods. Experiment was conducted using CRD in a seed germinator at 25±1 C. ANOVA was performed, and significant treatment means were separated by Duncan's new multiple range tests. Highest GP was observed as 97% at 88° C followed by 87, 86 & 83% at 80, 60 & 40°C hot water treatment respectively. Sand scarification method exhibited the GP of 80%. Lowest MGT was recorded in GA3 (50 & 100ppm) and hot water (88 °C). Maximum GV, PV and GI were recorded in the seed treated with 88° C hot water. The result of ANOVA showed a significant difference (P<0.05) in the effect of GP, MGT and GV using different pre-treatment. Pre-treatment had a significant role in the germination parameters of C. mucunoides. In laboratory, untreated seed produce the GP of 56% while sand scarification and hot water soaking had increase the GP ranges from 80-97% appears to be more promising, cost effective and safest method for large scale cultivation of these cover crops to prevent soil erosion and restore the soil fertility of wastelands of tropical regions of the world.
Keywords: Cover crop, pre-treatment, dormancy, germination percent, mean germination time
ID: 3487192