soil scientists have developed different mathematical equations and indices to be able to quantify soil development and to organize soil data. the main objective of the present research was the comparison of different soil development indices (including forms and ratios of iron, magnetic susceptibility, color indices, and modified harden index) related to different soils located on kerman-baft ...

A sib analysis of adult life-history characters was performed on about twelve hundred females from a laboratory Drosophila melanogaster population that had been sampled from nature and cultured so as to preserve its genetic variability. The following results were found. There was no detectable trend with age in additive or dominance genetic variances for age-specific fecundity. Environmental va...

Genetic improvement of pig performance was summarised for 28 Australian pig populations at the previous AGBU pig genetics workshop (Hermesch, 2006). The average genetic trend was $1.06 per pig each year. In comparison, the top 25% of populations had achieved $1.92 per pig each year. During subsequent discussions at the workshop, breeders set a target of an annual genetic gain of $3 per pig. In ...

the japanese threadfin bream, nemipterus japonicus, the most abundant and crucially economic nemipterus species is widespread throughout the indo-west pacific. the species has been studied widely for various aspects but genetic studies are scanty. this preliminary study contributes to the species phylogeography through the study of the genetic diversity and historical demography of n. japonicus...

Annual measurements on growth traits from a total of 275 parents and 690 full-sib families from 23 diallel tests of loblolly pine (Pinus taeda L.) in the Northern, Coastal and Piedmont test regions of the southeastern U.S. were used to reveal the time trend of genetic parameters through age 8. Variance components were estimated from mixed model analyses on growth traits (height, DBH and volume)...

The breeding value was estimated from grade Holstein Friesian for milk yield at 305 days (305MY), percent fat (FP), and total fat yield (FY) in kilogram. Animals were raised under Thai small farm conditions each of 10 to 30 heads per household. The data were collected during the years 1972 to 1998 from the joint cooperation between Kasetsart University (KU) and the Dairy Farming Promotion Organ...