Hybrid seeds have been a key component of greatly increasing the yield of many important crops, foremost of maize. If the parents are properly chosen, non-additive interactions between diverged genomes can lead to strongly superior performance of the F1 progeny, known as heterosis. While many different explanations have been advanced, a consensus for the causes of genome-wide positive epistasis...

The radiological hazard of radon gas to occupants in residential environments is from the particulate progeny "'Po, ""Pb, ^Bi and "4P0, rather than ^Rn itself. Attachment to aerosols, plateout and resuspension impacts on the actual progeny airborne concentrations. Plateout rate factors are measured for different air change (ventilation) rates, ACH, in a 0.28 m3 test chamber for interior residen...

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Studies have shown that maternal chronic stress or depression is linked to an increased risk for affective disorders in progeny. However, the impact of maternal chronic stress before pregnancy on their progeny in animal models has not been well studied. We investigated the behaviors and the neurobiology in 60-day-old male progeny of maternal rats exposed to a 21-day chronic unpredictable stress...

the maintenance of the endangered caspian brown trout salmo trutta caspius populations in iran depends on its artificial breeding. there is no information on how current hatchery breeding protocol influences effective population size of breeders (ne), which is a critical parameter to maintain genetic diversity in future generations. the current hatchery protocol (chp) was comparatively evaluate...

A quasi-cyclicity associated with variability of environmental conditions is detected for the regression residuals stock-recruitment model chum salmon Oncorhynchus keta in Okhotsk district, described by Ricker’s equation. The main factors influenced on progeny abundance were number spawners and amount precipitation spawning grounds area certain months. mathematical has been developed that simul...

Pedigree-based best linear unbiased prediction (pBLUP) is an effective method for genetic evaluation. The objective of this study was to assess the efficacy pBLUP develop superior inbred lines, using field and simulated data. This based on data 30,986 plants from six S0 generations eight progeny trials (S1–S4), performed over years. We measured grain yield expansion volume (EV). also EV 5000 (S...

Feijoa (Acca sellowiana) is a native Brazilian fruit with peculiar flavour, considerable amount of bioactive compounds and antioxidant activity. Even though this tree currently cultivated in several countries around the world, Brazil, process domestication underway, selection breeding new genotypes that are more productive better quality necessary. The objective work was to evaluate phenotypic ...

the white button mushroom, agaricus bisporus, is a commercially important cultivated filamentous fungus. strain stability is of great importance to both spawn producers and mushroom growers. mushroom strains are usually propagated via vegetative method on nutritionally rich substrates. abnormal growth and poor yield ‎are the consequences of this replication method. the reason for this phenomeno...