Combining Ability and Heterosis of Important Agronomic Traits in Tuber Mustard(Brassica juncea var.tumida Tsen & Lee)
CHEN Fabo
LONG Yongchang
YAO Qilun
FANG Ping
FAN Yonghong
Abstract：In this study,the combining ability and heterosis of 17 traits were analyzed with 15 parents of tuber mustard and their combinations from a 7 × 8 incomplete diallel design as materials.The result indicated that the general combining ability(GCA) among different parents in the same trait and among different traits in the same parent showed great different.The GCA relative effects of stem yield among different parents ranged from-29.88 to 13.48.Five effects showed significant positive,accounting for 33.33％.The special combining ability(SCA) relative effects ranged from-35.86 to 34.24 with twenty-four effects showing significantly positive,accounting for 42.86％.During the using of heterrosis in tuber mustard,therefore,it should pay attention to both GCA and SCA.The hight-parent heterosis of stem yield ranged from-46.34％ to 77.22％ with an average of 6.24％,and 64.29％ of hybrids showed positive.There was significant heterosis of stem yield among parents.The correlation coefficient between hight-parent heterosis and SCA of the stem yield is large and highly significant,which indicates that the heterosis can be reflected by SCA.
Keywords：combining abilityheterosistuber mustard
Publication Date：2017-01-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：7( 93-99 )