June 2010
Tn5 tagging biomonitoring of Rhizobium inoculants
Sinorhizobium freddi R0132, which forms nitrogen fixing nodules in association with Vigna radatia L. and fix nitrogen symbiotically, was the bioinoculant used in this study. Drug resistant S. freddi R0132::Tn5 remained constant at 40°C higher levels temperature for about 35 days (5 weeks) from the date of inoculation in solarzied and autoclaved biomanure VC-MA. The Tn5...
June 2010
Variation in streptomycin-induced bleaching and dark induced senescence of rice (Oryza sativa) genotypes and their relationship with yield and adaptability
Variation in streptomycin sensitivity and dark sensitivity of 36 rice genotypes of 3 different maturity groups was studied. Streptomycin sensitivity and dark sensitivity of rice genotypes were expressed in terms of bleaching index (BI) and senescence index (SI) respectively. Genotypes of each maturity group showed wide variation in their BI / SI value. The objective of this investigation was to find...
November 2009
Grain yield and yield components of maize (Zea mays L.) as affected by crude oil in soil
A field experiment on the effect of crude oil levels: 0.0 (control), 5.2, 10.4, 20.8 and 41.6 ml applied at different stages of growth on maize yield and yield attributes, with a view to making appropriate recommendation to maize growers in the oil producing areas of the Niger Delta, was conducted in Ozoro, Delta State during the 2003 and 2004 cropping seasons. Seven maize varieties: Composite (suwan 1),...
June 2010
Biplot analysis of grain yield in barley grown under differing management levels in years of contrasting season-end drought
Variance analysis and graphical biplots were used to understand the nature of genotype × environment interaction (G × E) in a grain yield data set obtained from 39 barley (Hordeum vulgare L.) genotypes grown in 18 environments (a combination of three sowing dates, two crop protection treatments and three years) at Holetta, central highlands of Ethiopia. Genotype × year interaction was...
June 2010
Molecular markers for Capsicum frutescens varieties cultivated in Borneo
This paper describes the isolation and characterization of microsatellite loci inCapsicum frutescens varieties cultivated in Borneo, Malaysia. A total of 58 putative microsatellites distributed across 29 sequences were isolated from a genomic library enriched for microsatellites. Ten locus specific polymorphic molecular markers were developed and applied to determine the levels of genetic diversity...
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