The Quality of Jute Mallow Seeds Exposed to Different Hot Water-Steeping and Cooling Protocols
Journal Title: Journal of Experimental Agriculture International - Year 2015, Vol 7, Issue 2
Abstract
Steeping of dormant jute mallow (Corchorus olitorius L.) seed in hot water at high temperature for enhanced germination, seems to be the most favoured of all other methods. Literature however, appears to be silent on the cooling protocol to adopt to ensure high quality after a seed lot may have been steeped in hot water. Seeds of two cultivars of this crop were subjected to nine hot water/cooling treatments and then dried back. They were then thinly spread and stored in open glass dishes at 83% relative humidity and 33°C. The moisture content of seeds steeped in water at 80 and 97°C increased from about 5-6% prior to storage to about 10-11% after 6-18 weeks after storage (WAS). Steeping of seeds at 80 and 97°C for 5 seconds significantly enhanced germination to about 88% and 77% in ‘Amugbadu’ and ‘Oniyaya’ respectively compared to about 8% in the control (unsteeped) seed. Cultivar ‘Amugbadu’ seeds steeped in cold water (ca 27°C) immediately after steeping in water at 97°C recorded higher germination percentage of 90% - 46% within 0-12 weeks of storage compared to the range of 88 to 29% recorded within the same period in seeds that were simply left to gradual cooling in ambient condition. ‘Oniyaya’ seeds exhibited no differential response to cooling protocol. Unsteeped (control) seed of both cultivars recorded higher germination of 82/85% at 20 WAS than seeds steeped at 97°C (irrespective of cooling protocol) and 80°C prior to storage. Furthermore, whereas seeds of the latter group germinated slower and less uniformly as storage progressed, a gradual increase in the values of these vigour indices were recorded in the former group of seeds. Across steeping treatments the germination percentage of ‘Oniyaya’ seed declined less rapidly than that of ‘Amugbadu’ seeds during storage from ca 61% to 32% in the former compared with about 62% to 3% in the latter.
Authors and Affiliations
K. D. Tolorunse, H. Ibrahim, N. C. Aliyu, J. A. Oladiran
Keywords
Related Articles
- EP ID EP354151
- DOI 10.9734/AJEA/2015/12517
- Views 114
- Downloads 0
Technical Efficiency of Small-holder Sweetpotato Farmers in Southeast Agro-ecological Zone of Nigeria
The paper investigated the level of technical efficiency and its determinants in sweetpotato production in South-East agro-ecological zone of Nigeria. A multistage random sampling technique was used in the selection of s...
Inclusion of Monosex Tilapia (Oreochromis niloticus) with Freshwater Prawn (Macrobrachium rosenbergii) in Polyculture Systems in the Ponds of Coastal Region: Impact of Stocking Density of Tilapia on Production and Profitability
Experiment was carried out to ascertain the impact of stocking density of monosex tilapia (Oreochromis niloticus) on production and profitability in freshwater prawn (Macrobrachium rosenbergii) farming system over a peri...
Comparison of Reference Evapotranspiration Estimates Obtained by Different Methods in Relation to the Penman-Montheith Method in Cerrado Environment, Brazil
Water is the most limiting resource for crop production, however, erroneous estimates of the amount needed to be applied can increase production costs, influence plant nutrition and contaminate the ecosystem. Thus, the o...
Response of Maize Varieties (Zea mays) to Biochar Amended Soil in Lafia, Nigeria
The experiments were conducted during 2010 and 2011 at the research and teaching farm of the college of agriculture, Lafia, Nasarawa state, Nigeria. To determine the effect of biochar-amended soil on the performance of m...
Interrelationship Patterns among Cane Yield Attributes and Physiological Traits in Sugarcane under Normal and Water Stress Conditions
Differential pattern of association assessed in sugarcane under two water regimes revealed that cane yield had highly significant positive correlation with stalk length, stalk diameter and single cane weight under both t...