Additive Main Effects and Multiplicative Interaction and Other Stability Analyses of Tef [<i>Eragrostis tef</i>(Zucc.)Trotter] Grain Yield

• 作者: Alemayehu Balcha
• 来源期刊: 美国植物学期刊(英文)
• 学科: 数学
• 关键词: AMMI Analysis Stability Rank Correlations Grain Yield TEF Eragrostis tef
• 年，卷（期）: 2020,（6）
• 页码范围: 793-802
• 页数: 10页
• 分类号: O17

摘要

<p align="left" style="text-align:justify;"> <span style="font-family:;" "=""><span style="font-family:Verdana;">Tef [</span><i><span style="font-family:Verdana;">Eragrostis</span></i> <i><span style="font-family:Verdana;">tef</span></i><span style="font-family:Verdana;"> (Zucc.)Trotter]) is one of the most important cereal crops </span></span><span style="font-family:Verdana;">grown </span><span style="font-family:Verdana;">in Ethiopia. Tef production has been partly constrained by low yield and less stability of the genotypes under cultivation. Field experiments were carried out in Halaba, Loka Abaya, Bensa and Areka, South Ethiopia, from August to November, during 2016 and 2017 main cropping seasons, in order to estimate yield stability </span><span style="font-family:Verdana;">and the association between AMMI analysis and other stability parameters. Experiments were laid out in randomized complete block design with three replications</span><span style="font-family:;" "=""><span style="font-family:Verdana;"> using fourteen improved tef genotypes. Mean yield for Halaba, Loka Abaya2016, Loka Abaya2017, Bensa, Areka2016 and Areka2017 was 0.99, 0.45, 0.48, 1.50, 1.62 and 0.77 tons/ha, respectively. Genotypes A</span><span><span style="font-family:Verdana;">marach, Boset, Simada, and Tseday exhibited high mean yield of 1.09, 1.10, 1.07 and 1.07 tons/ha, respectively. AMMI stability value (ASV) ranged from 0.17 (genotype Lakech) to 1.40 (Amarach);yield stability index (YSI) from 7 (Lakech) to 25 (Quncho);and superiority measure (</span><i><span style="font-family:Verdana;">P</span>_{<span style="font-family:Verdana;">i</span>}</i><span style="font-family:Verdana;">) from 0.015 (Boset) to 0.145 (Dega Tef). Rank correlation of yield with </span><i><span style="font-family:Verdana;">P</span>_{<span style="font-family:Verdana;">i</span>}</i></span></span><span style="font-family:;" "=""> </span><span style="font-family:;" "=""><span style="font-family:Verdana;">(</span><i><span style="font-family:Verdana