http://repository.fuoye.edu.ng:80/handle/123456789/805 2026-04-16T07:18:26Z http://repository.fuoye.edu.ng:80/handle/123456789/1291 Title: Hydro-priming improved germination and vigour of kenaf (Hibiscus cannabinus L.) seeds Authors: Adekoya, Modinat A.; Daniel, I. O.; Adetumbi, J. A. Abstract: Kenaf is grown for fibre in many African countries and propagated by seed, thus biomass and economic yields depend on seed vigour and seedling stands establishment. However, kenaf seeds are reported to have poor physiological quality consequently limiting biomass productivity. In this study, seed invigoration treatment with various durations of hydro-priming including 0 hour (control), 24, 48 and 78 hours was investigated in 12 accessions of kenaf seeds. Data were collected on seed germination at 3 and 7 days after sowing (DAS), seedling length and weight upon emergence, while germination rate and a seed vigour index was calculated from the data. The data were subjected to the PROC GLM procedure of SAS statistical package. The results showed significant effects of hydro-priming and genotype on all the seed viability and vigour variables (P<0.05 and P<0.01). Mean viability of control seed lots at 7 DAS was 8.67% and significant differences were found between hydro-primed seeds and control seed lots for all the seed quality variables. Seeds hydro-primed for 24 hours had above 100% germination. Interactive effects of genotype and hydro-priming treatments showed that early germination and cumulative germination consistently increased from 6% in control seed lots to 31% in hydro-primed seed lots for 4 genotypes. Seed vigour of 9 genotypes (75% of experimented accessions) was also improved with seed hydro-priming for 24 hours in almost all the accessions. The results suggest that hydro-priming for 24 hours optimised seed germination and vigour and is therefore recommended for kenaf seed invigoration treatment before planting. Description: Kenaf (Hibiscus cannabinus L.) is a warm season annual fiber crop used as a cordage crop to produce twine, rope, and sackcloth derived from its stem. Kenaf is an alternative raw material for newsprint paper offering ecological advantage over paper production from trees. Moreover, kenaf is a candidate eco-friendly crop for phyto-remediation of marginal and polluted soils through it’s capacity for sorption of heavy metals 1, 2. Kenaf is also a source of edible oil from its seeds. 2012-01-01T00:00:00Z http://repository.fuoye.edu.ng:80/handle/123456789/1290 Title: Agronomic and Ecological Evaluation on Growing Water-Saving and Drought-Resistant Rice (Oryza sativa L.) Through Drip Irrigation Authors: Adekoya, Modinat A.; Liu, Zaochang; Vered, Eli Abstract: A field demonstration trial comparing the growth status, yield ability and water use efficiency of drought-tolerant rice (Oryza sativa L.) varieties and normal paddy rice variety under drip irrigation and paddy irrigation was carried out for two years in Shanghai, China. Under drip irrigation, both inbred and hybrid water-saving and drought resistant rice (WDR) varieties showed better yield capacity than paddy rice varieties tested. WDR varieties under drip irrigation attained more than 95% of the yield level that is achieved in paddy field, while the paddy varieties under the same drip condition reached only about 75%.The methane gas emission was obviously decreased under drip irrigation condition, while the emission of other greenhouse gas like nitrous oxide or carbon dioxide was not observed significant difference between drip and paddy irrigation. It could be concluded that it is practicable to grow water saving and drought resistant rice through drip irrigation. Drip irrigation maintained a competitive grain yield and water productivity, and greatly reduced pollution risk to the environment. Considering the conservative amount of fertilizer application, less than the amount of fertilization in normal paddy field, the yield potential of rice could be improved by increasing the amount of fertilizer as top application in drip irrigation system. Description: Rice (Oryza sativa L.) is one of the most important food crops in the world which is mainly grown in Eastern and Southern Asia. It is grown in a wide range of environments and productive in many situations where other crops would fail. Rice-growing environments are based on their hydrological characteristics which include irrigated, rain fed lowland, upland. Water - nature’s gift to mankind is not unlimited and free forever. The amount of water present in the universe is only about 1520 million cubic kilometers, 97% is ocean and sea water, 2% is frozen arctic waters and only 1% is water in lakes, rivers and underground water, which is portable water for direct use to humans (Shaker, 2004). However rice farming consumes about 50% of water resources used in all economic activities (Fan et al., 1996; FAO, 2010; World Bank, 2010), which is taken as the largest consumer of water resources. 2014-01-01T00:00:00Z