Screening and Comprehensive Evaluation of Low Phosphorus Tolerance of Sesame Cultivars
XU Lanjie
LIANG Huizhen
YU Yongliang
TAN Zhengwei
DONG Wei
NIU Yongguang
YANG Hongqi
ZHANG Shouliang
LU Hailing
CAO Jie
L(U) Aishu
Abstract：In order to identify new sesame germplasms and morphological index for tolerance to low phosphorus,this study used low and high phosphorus levels to identify and screen sesames for tolerance to low phosphorus among 19 sesame cultivars at seedling and mature stages.The results showed that 19 sesame germplasms had a significant difference in the main morphological indexes for tolerance to low phosphorus,but the degrees of effect among the cultivars were significantly different.Based on the coefficients of variation of relative values of different indexes,total of 7 indexes including root diameter,root total length,main root length,root tip number,root volume,root weight,the upper ground weight were selected as indexes for screening and evaluation of the degree of low phosphorus tolerance of sesames at seedling stage;tatal of 8 indexes including main root length,fibrous root number,seed weight per plant,main root dry weight,pod dry weight,capsule numbers per plant,the underground parts dry weight,root-shoot ratio were selected as indexes for screening and evaluation of the degree of low phosphorus tolerance of sesames at mature stage.19 sesames cultivars for tolerance to low phosphorus were evaluated by using the method of the fuzzy membership function with the normalized coefficients of variation based on weight of the selected 13 indexes at seedling stages and 16 indexes at mature stages;'Xinxianheizhima'and'Boyanghei'were identified as low phosphorus resistant cultivars at seedling and mature stages,'Ezhi 1','Hebeibadacha','Xiaofuzhima'and'Anlezhima'were identified as low phosphorus resistant cultivars at seedling stage,and 'Liekouhuang','Yuzhi 11','Zhuzhi 10'and'Japan 7400'were identified as low phosphorus resistant cultivars at mature stage.
Keywords：sesamelow phosphorus tolerancescreeningcomprehensive evaluationfuzzy membership function
Publication Date：2017-11-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：6( 42-47 )