Grey relational analysis of storage root yield and above-ground traits in different sweetpotato genotypes
To study the correlation between yield of storage roots and above-ground agronomic traits,grey relational analysis was performed using sweetpotato harvested from the Research Station at TaianCjty.Thirteen agronomic traits of sweetpotato have been studied.Our results demonstrate that the five agronomic traits showing strong correlation with fresh weight of storage roots in order of importance are the fresh weight of branch petioles,the number of branch leaves,the total fresh weight of above-ground biomass,the fresh weight of branches and the number of branches.The top five traits significantly contributed to dry weight of storage roots are the fresh weight of branch leaves,the length of branches,the fresh weight of branch petioles,the number of branches and the number of branch leaves.Among the meteorological factors analyzed,the temperature was proved to be more important than humidity for a higher yield.Our study suggests that different traits need to be considered besides the major yield factors in order to reach a balanced objective in sweetpotato breeding program.
Sweetpotato Yield Agronomic trait Grey relational analysis
Guiling Liu Jianli Zheng Xinming Liu Baofang Chen Peng Zhang
Taian Academy of Agricultural Sciences,Shandong,Taian 271000 Institute of Plant Physiology &Ecology,Shanghai Institutes for Biological Sciences,Chinese Academy o
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
221-228
2008-10-12（万方平台首次上网日期，不代表论文的发表时间）