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Saturday, 2013/06/01 | 14:33:54

Researchers at the University of Western Australia (UWA) have identified the molecular mechanisms that strawberry plants use to fight the soil-borne fungal infection Fusarium wilt, a serious threat worldwide to strawberry production. The researchers, all from UWA's School of Plant Biology and Institute of Agriculture, have determined the expressions and functions of different proteins found in the roots of a resistant strawberry cultivar called Festival, and compared them to the expressions in Camarosa, a highly susceptible cultivar.

Saturday, 2013/06/01 | 06:20:08

Abiotic stresses such as low water availability and high salinity are major causes of cereal crop yield losses and significantly impact on sustainability. Wheat and barley are two of the most important cereal crops (after maize and rice) and are grown in increasingly hostile environments with soil salinity and drought both expected to increase this century, reducing the availability of arable land.

Friday, 2013/05/31 | 09:37:20

The ability to rapidly respond to changes in temperature is a critical adaptation for insects and other ectotherms living in thermally variable environments. In a process called rapid cold hardening (RCH), insects significantly enhance cold tolerance following brief (i.e., minutes to hours) exposure to nonlethal chilling. Although the ecological relevance of RCH is well-established, the underlying physiological mechanisms that trigger RCH are poorly understood.

Thursday, 2013/05/30 | 08:08:38

Dengue is the most prevalent arboviral disease of humans. The host and virus variables associated with dengue virus (DENV) transmission from symptomatic dengue cases (n = 208) to Aedes aegypti mosquitoes during 407 independent exposure events was defined. The 50% mosquito infectious dose for each of DENV-1–4 ranged from 6.29 to 7.52 log10 RNA copies/mL of plasma

Wednesday, 2013/05/29 | 08:11:32

As a managed pollinator, the honey bee Apis mellifera is critical to the American agricultural enterprise. Recent colony losses have thus raised concerns; possible explanations for bee decline include nutritional deficiencies and exposures to pesticides and pathogens. We determined that constituents found in honey, including p-coumaric acid, pinocembrin, and pinobanksin 5-methyl ether, specifically induce detoxification genes

Wednesday, 2013/05/29 | 08:00:23

High temperatures during rice grain ripening reduced yield and grain quality. The proportion of milky white grains was 43.6 % at 30 °C but only 6.5 % at 25 °C. Grain filling was initially faster at 30 °C and finished earlier, and the final dry matter content was less, than at 25 °C.

Saturday, 2013/05/25 | 08:06:09

An international team of scientists has identified the pathogen that caused the Irish potato famine of the mid-ninetheenth century. The scientists said that a strain of Phytophthora infestans called HERB-1 triggered the disaster, and not the US-1 strain that was long thought to have been the culprit.

Saturday, 2013/05/25 | 07:59:54

To facilitate the mapping of genes in sorghum [Sorghum bicolor (L.) Moench] underlying economically important traits, we analyzed the genetic structure and linkage disequilibrium in a sorghum mini core collection of 242 landraces with 13,390 single-nucleotide polymorphims. The single-nucleotide polymorphisms were produced using a highly multiplexed genotyping-by-sequencing methodology.

Friday, 2013/05/24 | 07:43:08

Significance

Telomeres are the structures at the ends of chromosomes that protect these ends from degradation or joining to one another. Telomeres consist of repeat DNA sequences and the length is gradually eroded as the cell ages. The ability to measure telomere length in individual cells would be important for studies of cell senescence, malignancy, stem cell renewal, and human fertility

Wednesday, 2013/05/22 | 08:05:23

In animals and plants, pathogen recognition triggers the local activation of intracellular signaling that is prerequisite for mounting systemic defenses in the whole organism. We identified that Arabidopsis thaliana isoform CPK5 of the plant calcium-dependent protein kinase family becomes rapidly biochemically activated in response to pathogen-associated molecular pattern (PAMP) stimulation

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