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QTL (quantitative trait local) analysis of aluminum tolerance in rice Orysa sativa.L.via marker - assisted selection

Bui Chi Buu; Pham Thi Thu Ha; Nguyen Viet Cuong; Nguyen Ðuc Thuan, Nguyen Thi Lang [january2010]

Aluminum toxicity is considered as one of the main causes of low yield in rice. In this study, 50 traditional varieties were screened under Al toxicity stress of 30 ppm Al in Yoshida solution. Kien Giang Lon, Nep Mong Chim, Nang Me, Nang Thom Cho Dao, Nhen Thom. AS996 in the rice gene pool of CLRRI exhibited good donor for Al toxicity tolerance. Two, BC2F2 populations from the cross of OMCS 20 ...

SUBJECT: resistencia a productos quimicos; variety trials; varicus marilynae; ensayos de variedades; essai de variete

POSTED TO: Science and Technology Journal of Agriculture and Rural Development [0866-7020]

The Red river delta is economic center of northern Vietnam. With the tidal, underground water and mangroves forestry have created coastal provincesprovinces in the Red River delta have group acid sulfate soils with total area about 88 thousands hectare. The Red river delta have the acid sulfate soils group with the area of about 88 thousands hectare. The acid sulfate soils is great importance ...

SUBJECT: acid sulphate soils; sol sulfate acide; suelos sulfato acido; agricultural products; productos agricolas

POSTED TO: Science and Technology Journal of Agriculture and Rural Development [0866-7020]

The total area of Kien Giang province without excluding islands has an area of 570,373.9 ha. In which U Minh Thuong area of 238,550.9 ha. Based on the hydro-meteorological data if the sea water level increases 1 meter high the mainland of Kien Giang province only remains 37,161.8 ha over from sea level occupying for 6.51% of the total mainland land. The climate change tendencies in the last 10 ...

SUBJECT: changement climatique; stockage; bosque virgen; virgin forests; almacenamiento

POSTED TO: Science and Technology Journal of Agriculture and Rural Development [0866-7020]

Cicadas (Homoptera: Cicadidae) emerge with high density and have become serious pest on coffee since 2005 in main coffee areas of Central Highland, Tay Nguyen, Vietnam. Their damage situation has tended to increase year by year. It has been damaging thousands ha of coffee. There are 6 cicada species on coffee has been identified. Among them there are 3 species Dundubia nagarasagna, Pomponia da ...

SUBJECT: methode de lutte; environment; sucedaneos del cafe; coffee substitutes; control methods

POSTED TO: Science and Technology Journal of Agriculture and Rural Development [0866-7020]

To Lich river in Ha Noi city is well-known for its pollution with BOD, COD higher several times than permissible standard. In the anaerobic condition, organic matter with sulfur is reduced to hydrogen sulfide (H2S) and discharged into the air. The study result show, air quality of 200 meters in distance along the wind direction from the To Lich river water was estimated of equivalent 1,702.3 t ...

SUBJECT: standards; eau usee; wastewater; normas; sulfuro de hidrogeno

POSTED TO: Science and Technology Journal of Agriculture and Rural Development [0866-7020]

Multiplex RT-PCR/RFLP has been widely employed for early detection and research on genetic relationship of viruses including sacbrood virus (SBV), which causes serious economic losses to both Apis cerana and A. mellifera colonies. In order to apply these molecular tools on the SBVs in Vietnam, this research aims to develop markers for early detection of SBV on A. cerana and for discrimination ...

SUBJECT: miel; genetic vectors; honey; apis cerana; race mixte

POSTED TO: Science and Technology Journal of Agriculture and Rural Development [0866-7020]

A research on cassava varietal selection and sustainable cultivation techniques has been carried out by the Northern Mounthinois Mountainous Agriculture and Forestry Science Institute (NOMAFSI) in one of the most popular cassava production district of Van Yen in Yen Bai province with the fund from the Ministry of Science and Technologies ( MOST). As a result, two new cassava varieties KM98-7 a ...

SUBJECT: cacahuete; groundnuts; soja; manioc; mandioca

POSTED TO: Science and Technology Journal of Agriculture and Rural Development [0866-7020]

The results of studying white - egg acid treated technology on some pure bivoltine silkworm and hybrid double - cross races show that the hatching rate of egg silkworm were treated at different time and acid density after laying 22 hours, are not same. The best time for e38, b42, dd2 and gq2218 silkworm races were tackled acid with density 1.075 is 5 minutes and A1 one is from 5.5 to 6 minutes ...

SUBJECT: clara de huevo; viabilidad; productividad; hybrids; hibridos

POSTED TO: Science and Technology Journal of Agriculture and Rural Development [0866-7020]

There are significant differences in the drainage requirement for various sections in hydraulic systems. The drainage requirements of each sector as well as the entire basin are often illustrated throughout the two factors: drainage coefficient and the graph of drainage coefficient. This paper will briefly introduce several results relate to the classification of drainage objects as well as me ...

SUBJECT: equipo de drenaje; sistemas hidraulicos; reseau de drainage; agua de drenaje; drainage equipment

POSTED TO: Science and Technology Journal of Agriculture and Rural Development [0866-7020]

The foundation pit bottom is often excavated below the underground water level in construction works in general, hydraulic works in particular. In these cases, the water falling for dry foundation is necessary for the quality and convenient construction of works. The water falling works is implemented by methods that depending on the geological condtion, size of foundation pit, excavation meth ...

SUBJECT: sotobosque; construccion; environmental impact; oiseau aquatique; waterfowl

POSTED TO: Science and Technology Journal of Agriculture and Rural Development [0866-7020]