%A PAN Xue-Biao,CHEN Zong-Xiang,ZUO Shi-Min,ZHANG Ya-Fang,WU Xu-Jiang,MA Ning %T A New Rice Cultivar“Wulingjing1” with Resistance to Rice Stripe Virus Bred by Marker Assisted Selection %0 Journal Article %D 2009 %J Acta Agronomica Sinica %R 10.3724/SP.J.1006.2009.01851 %P 1851-1857 %V 35 %N 10 %U {https://zwxb.chinacrops.org/CN/abstract/article_4341.shtml} %8 2009-10-12 %X
Rice stripe virus disease is one of the most serious diseases in rice production area of Jiangsu province since 2002. A commercial rice cultivar with excellent food taste-quality, Wuyujing 3, was highly susceptible to the disease and was improved through the MAS strategy in a backcross project with “Zhendao 88” as donor parent of resistance gene Stvb-i. In each backcross generation, we selected the progenies with Stvb-i based on the closely flanked markers. In advanced backcross generations, the marker’s detection for genetic background of selected plants was performed, along with the estimate by the eye for the similarity of selected plants to recurrent parent in synthetic agronomic traits. As a result, a new cultivar, Wulingjing 1, was fleetingly bred in BC3F4 generation, whose resistance to the disease was significantly increased and main characters especially on excellent taste-quality were consistent with those of the recurrent parent Wuyujing 3. In resistance identification tests with multiple locations organized by Seed Management Station of Jiangsu Province, the average percent of affected plants of the new cultivar was only 4.4% and significantly lower than that of recurrent parent (53.2%).