March 2011
Correlation study of flowering performance and flowering pattern with the yield in Linum usitatissimum L.
Highly significant positive correlation were observed in flax among the 1000 seed weight with biological yield, economic yield and harvest index, the reproductive phase length with primary branch number, flower number per plant and capsule number per plant, the vegetative phase length with days to first bud and days to first flower, the seed number per capsule with primary branch number, the capsule number per plant...
March 2011
A screening technique for resistance to Fusarium root rot of common bean
Resistance to Fusarium root rot (FRR) in common bean is documented as a quantitative trait and as such is greatly influenced by several environmental factors. A reproducible disease screening technique that considers the selection environment is therefore important in selecting resistant lines. A study was conducted to evaluate soil composition and irrigation frequency on the severity of FRR, using a...
March 2011
Reaction of some maize (Zea mays l.) varieties to infestation with root-knot nematode, Meloidogyne incognita under field conditions
Field trials were conducted in 2008 and 2009 to investigate the reaction of 13 varieties of maize (Zea mays L.) to natural infestation of root knot nematode, Meloidogyne incognita at the Institute of Agricultural Research and Training, Obafemi Awolowo University, Moor Plantation, Ibadan, Nigeria under field conditions. Used maize varieties were ART/98/SW6-0B, BR-9928 DMR, BR-9943 DMR, DMR-ESR-White,...
March 2011
Optimization of optimum condition for phytic acid extraction from rice bran
Phytic acid is one of the bioactive compounds that are being intensively studied to evaluate their effects on health. This study was carried out to determine the optimum condition for phytic acid extraction from rice bran. Three main parameters were considered to optimize the condition for phytic acid extraction; different types of extracting solvent, length of extraction time and influence of different pH adjustment....
March 2011
Nematicidal effects of some plant extracts on egg hatchability and control of Meloidogyne spp. in cowpea (Vigna unguiculata (L.) Walp)
The effects of cold and hot aqueous extracts of 5 test plants (Luffa cylindrica, Momordica charantia, Euphorbia hirta, Desmodium scorpiurus and Stachytarpheta cayennensis), wood ash of Gmelina aborea, a synthetic insecticide (Karate –Lambda cyhalothrin) and untreated tap water (control) were evaluated against the egg hatchability and control of Meloidogyne spp. in cowpea (Vigna unguiculata (L.) Walp) in...
March 2011
The Physiological responses of sunflower (Helianthus annuus L.) to NiSO4
The effects of different concentrations of nickel sulfate (NiSO4) on some physiological parameters in sunflower (Helianthus annuus L.) were studied. Sunflower plants were treated with NiSO4 at 0, 4, 8, 16, 32 and 40 μM in Hoagland solutions. With the increasing concentrations of NiSO4, all the growth parameters increased. The highest significant increase of NAR and RGR were obtained with 16 μM...
March 2011
Heritability and correlation coefficient analysis for yield and its components in rice (Oryza sativa L.)
The objectives of this study were to estimate the phenotypic and genotypic coefficients of variation, broad sense heritability, genetic gain and correlations in rice (Oryza sativa L.). The experiment was laid out in a randomized complete block design (RCBD) with three replications in the International Institute of Tropical Agriculture, Ibadan, Nigeria during 2008/2009 cropping season. Genotypes differed...
March 2011
Taxonomic importance of the vegetative and pod characteristics in three Nigerian species of sesame
The relevance of the vegetative and the pod characteristics to the taxonomy of three Nigerian species of sesame was investigated. The plant materials used are Sesame alatum, Sesame radiatum and Sesame indicum. After growing the plants for two years in the same environment, the seeds of each species were harvested and broadcast in a separate perforated 5 L plastic bucket filled with sandy loam...
September 2011
Cytogenetic and biochemical investigations to study the response of Vigna radiata to cadmium stress
A study was carried out on root tips and leaves of Vigna radiata, 15 days old plantlets grown in nutrient Hoagland media were exposed to various levels of cadmium chloride (0.05, 0.10 and 0.50 mM) for 48 and 72 h. The plant tissues were analyzed for mitotic index, chromosomal variations, root-shoot ratio, leaf area, chlorophyll estimation, and the activity of nitrate content, nitrate reductase (NR), soluble protein...
March 2011
Introgression of Pythium root rot resistance gene into Rwandan susceptible common bean cultivars
A breeding scheme was carried out to introgress resistance genes to bean Pythiumroot rot in various commercial varieties grown in Rwanda. The achieved crosses were performed between three selected susceptible varieties (R617-97A, RWR 1668 and Urugezi) which are adapted to the various ecological production zones of Rwanda and two known sources of resistance to Pythium root rot(RWR719 and AND 1062)....
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