Breeding for improved herbage and seed yield in Setaria sphacelata (Schumach.) Stapf and Hubbard ex Moss

摘要: The simultaneous selection for yield of herbage and seed in Setaria sphacelata (Schumach.) Stapf Hubbard ex Moss was studied, the amount variation present each these traits relation to various plant characteristics assessed a spaced population its open-pollinated progeny. When comparing tillers at similar stage growth, high vitro digestibility found those that originated from early-heading plants characterized by short length, light weight narrow leaves. Comparisons whole 3 periods regrowth revealed negative correlation between dry-matter yield. not repeated under sward conditions. Plants with clean were large-sized. Of three components number heads had largest influence on A did necessarily mean germinating seeds. Simultaneous could be carried out through only, because genotypic two higher response expected Selection indices should take into account time head emergence fresh harvest when after flowering. For before flowering, index include number, length tillers. testing monoculture wide spacing another species compared. lax, prostrate erect growth habits, erect-growing type proved most productive have highest competitive ability management applied. major research findings are summarized proposed breeding scheme.