Improvement of high starch sweetpotato population by recurrent selection
This study was researched the correlative characters of quality and molecule markers in recurrent selection in population improvement of high starch sweetpotato,and that point out the genetic trends of important trails and elucidated the characters of goal group with molecule markers.Reached the conclusions as following：(1)The first selection population(C1)had the reduced agronomic traits compared with the basic population.After the second selecting,the agronomic traits especially the weight of dried potato and fresh potato of the population(C2)were infinitely improved compared with C1.The change tendency of quality traits such as the drying rate and starch rate were different from others.(2)Along with the increase of selection times,fresh weight and dry weight per plant were significantly improved with the slightly lowered variation coefficient,and there was the small variation in drying and starch rate.(3)RAPD analysis results showed that the genetic difference within populations reduced after the first selection and it was saliently increased after the second selection.Cluster analyses showed that RAPD markers could accurately response and determine the genetic variations and the pedigree relations.The result further indicated that RAPD markers are reasonable and reliable markers in assisted selection breeding of sweetpotato.
Yuming Li
Nanchong Institute of Agricultural Sciences,Nanchong,Sichuan,63700
国际会议
3rd China-Japan-Korea Workshop on Sweetpotato(第三届中日韩甘薯学术研讨会)
北京
英文
54
2008-10-12（万方平台首次上网日期，不代表论文的发表时间）