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Advancement of QTL analysis for traits associated to N,P and K utilization

LIN Hai-jian,ZHANG Zhi-ming,ZHANG Yong-zhong,GAO Shi-bin,PAN Guangtang(Corn Institute,Sichuan Agriculture University/Key Lab of Crop Genetic Resources and Improvement,Ministry of Education,Yaan 625014,China)  
Nitrogen(N),Phosphorus(P) and Potassium(K) are the three main nutrition elements and play an important role in the process of crop growth.But nutrition deficiency in soil is becoming a global problem caused significant reduction in crop yields.To this effect,excessive fertilizer was applied as insurance so that nutrients will not limit yields in the past few years,however,these high fertilizer application rates are not necessarily sound from an environmental perspective.Take a long-term consideration,the cultivation of high nutrition efficiency crop varieties,combined with the reasonable cultivated practices is one of the most efficient and economical approach to solve these problems.Analysis of QTL for crop nutrition absorption and utilization will facilitate crop breeding of high nutrition efficiency utilization.The research progress of QTL analysis for traits associated to N,P and K utilization mainly in rice,maize and wheat was reviewed.
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