Breeding of New Sugarbeet Variety with Rhizomania Resistance Neitang(ND)38

The variety of sugarbeet Neitang (ND)38is a hybrid of monogerm CMS diploid,it is hybridized from the female parent (CMS66181A,from KWS)with diploid pollinator9-7005bred by ovule culture and conventional breeding,the sterile rate of CMS is stabilized at more than98%.The regional Rhizomania resistant sugar beet variety test was performed in the Inner-Mongolia in1999～2000,the results showed that root yield,sugar content and sugar yield increased by85.5%,1.31°S and101.2%respectively,and disease index decreased by11.6to comparing with CK (Tianyan303);its productive demonstration experiment was conducted in the field of medium Rhizomania access in2001,the root yield,sugar content and sugar yield increased by127.5%,1.68°S and154.7%respectively,and disease index decreased by33.0in comparison with CK (Tianyan303).Its suitable density is about 75000～82500plants per ha in the north China and the northwest China.