Different genotypes of Bambara groundnut (Vigna subterranea L. Verdc) grow well under conducive environmental conditions, provided that adequate soil moisture is available during vegetative and reproductive phases. Ho...
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Different genotypes of Bambara groundnut (Vigna subterranea L. Verdc) grow well under conducive environmental conditions, provided that adequate soil moisture is available during vegetative and reproductive phases. However, drought stress is the major limiting factor to bambara production, which accounts for up to 40% of yield losses. This situation could worsen due to drastic and rapid changes in the global climate. Landraces grown by farmers are low-yielding. Understanding the physiological response of different genotypes to drought stress is key to achieving food security through crop improvement and diversification. This study focused on variations in the response of Bambara groundnut genotypes to intermittent drought stress during the crop’s critical growth (vegetative and reproductive) stages. The experiment was undertaken at CSIR-Crops Research Institute Screen-house. The treatments were used in a factorial experiment with three replications in a randomized complete block design. The Bambara genotypes showed considerable variability in tolerance to drought stress. Drought stress during vegetative and reproductive stages significantly reduced crop growth indices, the leaf relative water content, chlorophyll content and leaf area. Drought stress during vegetative and reproductive stages had a more severe impact on the seed yield of genotype Nav Red, reducing it by 69% and 13%, respectively. Farmers should pay more attention to adopting drought-tolerant and high-yielding varieties for improved Bambara groundnut productivity and livelihoods.
Enforcing environmental laws and policies has been one of the pressing agenda *** the mandate given to the Environmental Protection Agency(EPA)by the Act 490,there are still numerous environmental issues unaddressed i...
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Enforcing environmental laws and policies has been one of the pressing agenda *** the mandate given to the Environmental Protection Agency(EPA)by the Act 490,there are still numerous environmental issues unaddressed in *** paper is geared towards unravelling and identifying the current additions that have been made to existing literature on environmental laws and policies in *** paper made a wide-ranging general literature review to outline significant contributions concerning environmental laws and *** environmental laws and policies were identified but have been fragmented and are not codified in a particular *** is evident from the review of literature existing that there are still areas for advanced research on the topic of environmental laws and policies placing more emphasis on institution concerned with environmental issues at global *** study recommended the need for capacity building for environmental personnel and data due to the numerous technological advancement to better assist the implementation and enforcement of environmental laws in Ghana.
The Leuconostoc citreum SJ-57 strain isolated from the sweet potato starch production showed great potential as a microbiological flocculant,but its underlying flocculation mechanisms are yet *** this study,infrared s...
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The Leuconostoc citreum SJ-57 strain isolated from the sweet potato starch production showed great potential as a microbiological flocculant,but its underlying flocculation mechanisms are yet *** this study,infrared spectroscopy and thermodynamic analysis were performed to elucidate the short-range and long-range interactions between *** SJ-57 and starch granules,revealing that bacteria cells bond starch granules via metal-bridging ionic bonds.A high repulsive energy barrier of~8×10^(−18)J must be overcome to initiate the flocculation ***,protease,lipase,lysozyme,dextranase,and guanidine hydrochloride were used to treat the bacterial cell,confirming that its flocculation ability originated from surface proteins,including GW structural domain proteins,DnaK,GroEL,elongation factor Tu,and lysozyme *** primary flocculation mechanisms of *** was proposed to provide a deep understanding of microbiological flocculants and a foundation for future industrial applications in starch production.
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