The effect of genotype and 2, 4-D on callogenesis was investigated in sugarcane (Saccharum spp.) hybrid cultivars; SP726180, B47419, M1176/77 and M2119/88. To evaluate the response of the genotypes to callus induction and embryogenic callus production, leaf base explants were cultured on Murashige and Skoog (MS) basal medium supplemented with 2.5, 3.0, 3.5, or 4.0mg/L) 2,4-D for 8wks. While, the number of responding explants was found to generally increase with the increase in 2,4-D concentration from 2.5 to 4.0mg/L, embryogenic callus producation was highest on media supplemented with 3.0 and 2.5mg/L. There were no significant differences in the number of responding explants and embryogenic callus production among B47419, M1176/77 and M2119/88, these genotypes however exhibited a significantly higher response when compared to SP726180 indicating their high propensity to in vitro callogenesis.
Pot experiment was conducted at the Department of Agronomy Crop Pavilion of the University of Ilorin, Ilorinto assess the effects of water stress at different growth stages on the physiological parameters of soybean genotypes. Six soybean genotypes (TGX 536-02D, TGX 1830-2DE, TGX 1019-2EN, TGX 1740-2F, TGX 1485-1D and TGX 1817-12E) were subjected to water stress at three growth stages (vegetative, flowering and post-flowering stages) with a well-watered control. The experiment was designed as a factorial trial and laid out in split- plot arrangements. Morphological growth characters such as number of leaves, leaf area, branching and dry matter production were measured during growth which were used to determine physiological growth indices.Results show that crop growth rate (CGR), relative leaf growth rate (RLGR), net assimilation rate (NAR) and leaf area ratio measured at vegetative growth were significantly reduced by water stress occurring at the vegetative stage.Amongst the investigated genotypes TGX 536-02D was the most tolerant while 1485-1D was the least tolerant genotypes.
The study analyzed the attitudes of farmers towards participation in irrigated vegetable production in Gombe state. Multi-stage sampling technique was used to select 180 farmers from a total population of 904 irrigated vegetable farmers in the study area. The data collected was analyzed using descriptive statistics. The result on the socio-economic characteristics revealed that 42.2% of the respondents were within the age group of 30-39 years. Majority 88.9% of the respondents were male and 60.5% of them had no formal education. Most 91.7% of the respondents were married and 35% of them had 9-15 family members. About 52.8% of the respondents earned between N 101,000 - N 150,000 as their estimated annual income. Majority 62.2% of the respondents had their farm size between 0.5 -1.4 hectares of land and about 87.2% of the respondents had between 1-9 years of experience in irrigated vegetable production. Majority 66.7% of the respondents belongs to the farmers’ association. The mean scores of the attitudinal statements are; cooperative participation in irrigated vegetables production help work done faster (4.75), leads to effective decision (4.78), serve as a basis for getting governmental aids (4.11), yield higher profit (4.65), leads to food security (4.72), enhances access to extension services (4.52), facilitates adoption of innovation (4.52), leads to capacity building (4.67), increase investment (4.68), enhances access to market (4.48), and lastly it brings about agricultural development (M=4.62). The study recommended that vegetable farmers should be encouraged to join and revive the existing cooperative societies for them to raise enough capital for their production activities. Government should make available farm inputs, irrigation facilities and construction of boreholes and tube wells to the farmers at subsidized rates. Farmers need to be educated on their production activities and increase in extension agent-farmer contact in order to facilitate the adoption of improved vegetable production technology.
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