Yield traits as selection indices in seedling populations of cassava

被引：16

作者：

Ojulong, Henry Fred ^{[1
]}

Labuschagne, Maryke Tine ^{[2
]}

Herselman, Liezel ^{[2
]}

Fregene, Martin ^{[3
]}

机构：

[1] Int Ctr Trop Agr, Cali, Colombia

[2] Univ Free State, ZA-9300 Bloemfontein, South Africa

[3] Donald Danforth Plant Sci Ctr, St Louis, MO 63132 USA

来源：

CROP BREEDING AND APPLIED BIOTECHNOLOGY | 2010年 / 10卷 / 03期

关键词：

Manihot esculenta; root characteristics; seedlings; DRY-MATTER CONTENT; PRODUCTIVITY; ROOT;

D O I：

10.1590/S1984-70332010000300002

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

The cassava breeding scheme currently used is long, because initial stages concentrate mainly on improving yield. with root quality selection following later To shorten the scheme, yield and root quality should be selected simultaneously, starting at the seedling nursery. In this study, a nursery comprising of eight cassava families and 1885 seedlings developed from parents adapted to three major agro-ecologies, were evaluated for yield related traits in Colombia. Percentage dry matter content (DMC) and harvest index produced similar ranking of the parents. Tuber yield, weight, and number showed potential of increasing yield through conventional breeding. A selection index including fresh root yield, percentage DMC, root weight and roots per plant, with heavier weights being assigned to root weight and roots per plant, should be used.

引用

页码：191 / 196

页数：6

共 17 条

[1]

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