Chalkiness is an unpleasant trait for rice con-sumer,which is known to be controlled geneti-cally and affected by environment during grainmaturing.We used the model of Additive Main
<p align="left" style="text-align:justify;"> <span style="font-family:;" "=""><span style="font-family:Verdana;">Tef [</span><i><...<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><sub><span style="font-family:Verdana;">i</span></sub></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><sub><span style="font-family:Verdana;">i</span></sub></i></span></span><span style="font-family:;" "=""> </span><span style="font-family:;" "=""><span style="font-family:Verdana;">(</span><i><span style="font-family:Verdana;">r</span></i><span style="font-family:Verdana;"> = 0.97, </span><i><span style="font-family:Verdana;">p</span></i><span style="font-family:Verdana;"> < 0.01), ASV with </span><i><span style="font-family:Verdana;">W</span><sub><span style="font-family:Verdana;">i</span></sub></i><span style="font-family:Verdana;"> and </span></span><i><span style="font-family:Verdana;"><i>δ</i></span><span style="font-family:;" "=""><span style="font-family:Verdana;"><sub>i</sub><sup style="margin-left:-6px;">2</sup></span><i><span style="font-family:Verdana;"></span></i></span></i><span style="font-family:Verdana;"><span style="font-family:Verdana;"> </span></span><span style="font-family:;" "=""><span style="font-family:Verdana;">(</span><i><span style="font-family:Verdana;">r</span></i><span style="font-family:Verdana;"> = 0.85, </span><i><span style="font-family:Verdana;">p</span></i><span style="font-family:Verdana;"> < 0.01) and that between </span><i><span style="font-family:Verdana;">W</span><sub><span style="font-family:Verdana;">i</span></sub></i><span style="font-family:Verdana;"> and </span></span><i><span style="font-family:Verdana;"><i>δ</i></span><span style="font-family:;" "=""><span style="font-family:Verdana;"><sub>i</sub><sup style="margin-left:-6px;">2</sup></span><i><span style="font-family:Verdana;"></span></i></span></i><span style="font-family:" color:#323e32;background:#917a5f;"=""> </span><span style="font-family:;" "=""><span style="font-family:Verdana;"> </span><span style="font-family:Verdana;">(</span><i><span style="font-family:Verdana;">r</span></i><span style="font-family:Verdana;"> = 1.00, </span><i><span style="font-family:Verdana;">p</span></i><span style="font-family:Verdana;"> < 0.01)</span></span><span style="font-family:;" "=""> </span><span style="font-family:Verdana;">was high. Rank correlation of </span><span style="font-family:Verdana;">YSI with </span><span style="font-family:;" "=""><span style="font-family:Verdana;">yield (</span><i><span style="font-family:Verdana;">r</span></i><span style="font-family:Verdana;"> = 0.57, </span><i><span style="font-family:Verdana;">p</span></i><span style="font-family:Verdana;"> < 0.05)</span></span><span style="font-family:Verdana;">,</span><span style="font-family:Verdana;"> ASV </span><span style="font-family:Verdana;">(</span><i><span style="font-family:Verdana;">r</span></i><span style="font-family:Verdana;"> = 0.</span><span style="font-family:Verdana;">75</span><span style="font-family:;" "=""><span style="font-family:Verdana;">, </span><i><span style="font-family:Verdana;">p</span></i><span style="font-family:Verdana;"> < 0.0</span></span><span style="font-family:Verdana;">1), </span><span style="font-family:;" "=""><span style="font-family:Verdana;">and </span><i><span style="font-family:Verdana;">P</span><sub><span style="font-family:Verdana;">i</span></sub></i></span><span style="font-family:Verdana;"> (</span><i><span style="font-family:Verdana;">r</span></i><span style="font-family:Verdana;"> = 0.</span><span style="font-family:Verdana;">68</span><span style="font-family:;" "=""><span style="font-family:Verdana;">, </span><i><span style="font-family:Verdana;">p</span></i><span style="font-family:Verdana;"> < 0.0</span></span><span style="font-family:Verdana;">1) and </span><i><span style="font-family:;" "=""><span style="font-family:Verdana;">W</span><sub><span style="font-family:Verdana;">i</span></sub></span></i><span style="font-family:Verdana;"> and </span><i><span style="font-family:Verdana;"><i>δ</i></span><span style="font-family:;" "=""><span style="font-family:Verdana;"><sub>i</sub><sup style="margin-left:-6px;">2</sup></span><i><span style="font-family:Verdana;"></span></i></span></i><span style="font-family:" color:#323e32;background:#917a5f;"=""> </span><span style="font-family:;" "=""><span style="font-family:Verdana;"> </span><span style="font-family:Verdana;">(</span><i><span style="font-family:Verdana;">r</span></i> </span><span style="font-family:Verdana;">=</span><span style="font-family:;" "=""><span style="font-family:Verdana;"> 0.67, </span><i><span style="font-family:Verdana;">p</span></i><span style="font-family:Verdana;"> < 0.01) was also positive. The present study showed that </span></span><span style="font-family:;" "=""><span style="font-family:Verdana;">genotypes Etsub, Simada and Tseday would be recommended for high yield and wide adaptation, and ASV would be used alone or jointly with YSI, </span><i><span style="font-family:Verdana;">W</span><sub><span style="font-family:Verdana;">i</span></sub></i><span style="font-family:Verdana;"> and </span></span><i><span style="font-family:Verdana;"><i>δ</i></span><span style="font-family:;" "=""><span style="font-family:Verdana;"><sub>i</sub><sup style="margin-left:-6px;">2</sup></span><i><span style="font-family:Verdana;"></span></i></span></i><i><span style="font-family:;" "=""> </span></i><span style="font-family:Verdana;"><span style="font-family:Verdana;"> </span></span><span style="font-family:Verdana;">for ranking of genotyp</span><span style="font-family:Verdana;">es.</span> </p>展开更多
文摘Chalkiness is an unpleasant trait for rice con-sumer,which is known to be controlled geneti-cally and affected by environment during grainmaturing.We used the model of Additive Main
文摘<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><sub><span style="font-family:Verdana;">i</span></sub></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><sub><span style="font-family:Verdana;">i</span></sub></i></span></span><span style="font-family:;" "=""> </span><span style="font-family:;" "=""><span style="font-family:Verdana;">(</span><i><span style="font-family:Verdana;">r</span></i><span style="font-family:Verdana;"> = 0.97, </span><i><span style="font-family:Verdana;">p</span></i><span style="font-family:Verdana;"> < 0.01), ASV with </span><i><span style="font-family:Verdana;">W</span><sub><span style="font-family:Verdana;">i</span></sub></i><span style="font-family:Verdana;"> and </span></span><i><span style="font-family:Verdana;"><i>δ</i></span><span style="font-family:;" "=""><span style="font-family:Verdana;"><sub>i</sub><sup style="margin-left:-6px;">2</sup></span><i><span style="font-family:Verdana;"></span></i></span></i><span style="font-family:Verdana;"><span style="font-family:Verdana;"> </span></span><span style="font-family:;" "=""><span style="font-family:Verdana;">(</span><i><span style="font-family:Verdana;">r</span></i><span style="font-family:Verdana;"> = 0.85, </span><i><span style="font-family:Verdana;">p</span></i><span style="font-family:Verdana;"> < 0.01) and that between </span><i><span style="font-family:Verdana;">W</span><sub><span style="font-family:Verdana;">i</span></sub></i><span style="font-family:Verdana;"> and </span></span><i><span style="font-family:Verdana;"><i>δ</i></span><span style="font-family:;" "=""><span style="font-family:Verdana;"><sub>i</sub><sup style="margin-left:-6px;">2</sup></span><i><span style="font-family:Verdana;"></span></i></span></i><span style="font-family:" color:#323e32;background:#917a5f;"=""> </span><span style="font-family:;" "=""><span style="font-family:Verdana;"> </span><span style="font-family:Verdana;">(</span><i><span style="font-family:Verdana;">r</span></i><span style="font-family:Verdana;"> = 1.00, </span><i><span style="font-family:Verdana;">p</span></i><span style="font-family:Verdana;"> < 0.01)</span></span><span style="font-family:;" "=""> </span><span style="font-family:Verdana;">was high. Rank correlation of </span><span style="font-family:Verdana;">YSI with </span><span style="font-family:;" "=""><span style="font-family:Verdana;">yield (</span><i><span style="font-family:Verdana;">r</span></i><span style="font-family:Verdana;"> = 0.57, </span><i><span style="font-family:Verdana;">p</span></i><span style="font-family:Verdana;"> < 0.05)</span></span><span style="font-family:Verdana;">,</span><span style="font-family:Verdana;"> ASV </span><span style="font-family:Verdana;">(</span><i><span style="font-family:Verdana;">r</span></i><span style="font-family:Verdana;"> = 0.</span><span style="font-family:Verdana;">75</span><span style="font-family:;" "=""><span style="font-family:Verdana;">, </span><i><span style="font-family:Verdana;">p</span></i><span style="font-family:Verdana;"> < 0.0</span></span><span style="font-family:Verdana;">1), </span><span style="font-family:;" "=""><span style="font-family:Verdana;">and </span><i><span style="font-family:Verdana;">P</span><sub><span style="font-family:Verdana;">i</span></sub></i></span><span style="font-family:Verdana;"> (</span><i><span style="font-family:Verdana;">r</span></i><span style="font-family:Verdana;"> = 0.</span><span style="font-family:Verdana;">68</span><span style="font-family:;" "=""><span style="font-family:Verdana;">, </span><i><span style="font-family:Verdana;">p</span></i><span style="font-family:Verdana;"> < 0.0</span></span><span style="font-family:Verdana;">1) and </span><i><span style="font-family:;" "=""><span style="font-family:Verdana;">W</span><sub><span style="font-family:Verdana;">i</span></sub></span></i><span style="font-family:Verdana;"> and </span><i><span style="font-family:Verdana;"><i>δ</i></span><span style="font-family:;" "=""><span style="font-family:Verdana;"><sub>i</sub><sup style="margin-left:-6px;">2</sup></span><i><span style="font-family:Verdana;"></span></i></span></i><span style="font-family:" color:#323e32;background:#917a5f;"=""> </span><span style="font-family:;" "=""><span style="font-family:Verdana;"> </span><span style="font-family:Verdana;">(</span><i><span style="font-family:Verdana;">r</span></i> </span><span style="font-family:Verdana;">=</span><span style="font-family:;" "=""><span style="font-family:Verdana;"> 0.67, </span><i><span style="font-family:Verdana;">p</span></i><span style="font-family:Verdana;"> < 0.01) was also positive. The present study showed that </span></span><span style="font-family:;" "=""><span style="font-family:Verdana;">genotypes Etsub, Simada and Tseday would be recommended for high yield and wide adaptation, and ASV would be used alone or jointly with YSI, </span><i><span style="font-family:Verdana;">W</span><sub><span style="font-family:Verdana;">i</span></sub></i><span style="font-family:Verdana;"> and </span></span><i><span style="font-family:Verdana;"><i>δ</i></span><span style="font-family:;" "=""><span style="font-family:Verdana;"><sub>i</sub><sup style="margin-left:-6px;">2</sup></span><i><span style="font-family:Verdana;"></span></i></span></i><i><span style="font-family:;" "=""> </span></i><span style="font-family:Verdana;"><span style="font-family:Verdana;"> </span></span><span style="font-family:Verdana;">for ranking of genotyp</span><span style="font-family:Verdana;">es.</span> </p>
