Genetic Variability and Association Analysis of Some Quantitative Characters in Sweet Corn

WOS: 000328438300011The objective of this study was to determine genetic variability, heritability, genetic advance, genotypic and phenotypic correlations of yield, yield components and kernel quality traits in seven sweet corn varieties. The present research was conducted during 2009 and 2010 growing season in Eskisehir, midwestern Turkey. The trials were set up in randomised complete block design with four replications. Analysis of variance observed highly significant differences for all the examined traits in both years. Sugar content, soluble solid concentration and number of leaves per plant revealed the highest genotypic and phenotypic coefficient of variation values. The high heritability estimates coupled with high generic advance for sugar content, soluble solid concentration and starch content. Positive correlations were revealed between yield (husked, dehusked and fresh kernel) and yield components except plant height and 1000 seed weight. Negative correlations were found between kernel quality and yield and yield related traits. It can be concluded that, husked ear weight and dehusked ear weight could be used as the main criteria for yield improvement. It should be unfeasible to develop sweet corn varieties with satisfactory yield potential and improved kernel quality for the different sweet corn markets.Scientific Research Projects Commission [200823026]The authors thanks Eskisehir Osmangazi University, The Scientific Research Projects Commission for supporting this study as the project number 200823026

Kernel Quality of Some Sweet Corn Varieties in Relation to Processing

WOS: 000346326700016The quality characteristics (dry matter content, soluble solid concentration, kernel colour, sugar, starch and protein content) of fresh, frozen and canned kernels of seven sweet corn varieties ('Lumina', 'Merit', 'Sunshine', 'Jubilee', 'Challenger', 'Yellow Baby' and '2201') were studied. The present research was conducted during 2009 and 2010 in Eskisehir, Midwestern Turkey. The trials were set up in randomised complete block design, with four replications. Ears were harvested and randomly selected for analysis as fresh, frozen and canned. Dry matter content ranged from 34.2% ('2201') to 39.5% ('Yellow Baby), soluble solid concentration from 16.3% ('2201') to 27.4% ('Yellow Baby'). The sugar content of fresh kernels was higher than other treatments (frozen and canned) for all varieties. The starch content of the varieties was decreased after processing, except in 'Yellow Baby'. Fresh, frozen and canned sweet corn kernels had similar protein contents; the highest protein content was obtained, for all treatments, from 'Challenger', and it maintained its higher protein content after processing. '2201' had the highest sugar and the lowest starch content for fresh, frozen and canned varieties. When compared on a kernel basis, sweet corn marketed as fresh, frozen or canned, it may be feasible to select varieties for different sweet corn markets.Eskisehir Osmangazi University, The Scientific Research Projects CommissionEskisehir Osmangazi University [200823026]This work was supported by The Eskisehir Osmangazi University, The Scientific Research Projects Commission (project number:200823026)

Genetic Variability and Association Analysis of SomeQuantitative Characters in Sweet Corn

The objective of this study was to determine genetic variability, heritability, genetic advance, genotypic and phenotypic correlations of yield, yield components and kernel quality traits in seven sweet corn varieties. The present research was conducted during 2009 and 2010 growing season in Eskisehir, midwestern Turkey. The trials were set up in randomised complete block design with four replications. Analysis of variance observed highly significant differences for all the examined traits in both years. Sugar content, soluble solid concentration and number of leaves per plant revealed the highest genotypic and phenotypic coefficient of variation values. The high heritability estimates coupled with high genetic advance for sugar content, soluble solid concentration and starch content. Positive correlations were revealed between yield (husked, dehusked and fresh kernel) and yield components except plant height and 1000 seed weight. Negative correlations were found between kernel quality and yield and yield related traits. It can be concluded that, husked ear weight and dehusked ear weight could be used as the main criteria for yield improvement. It should be unfeasible to develop sweet corn varieties with satisfactory yield potential and improved kernel quality for the different sweet corn markets

Bazı Şeker Mısır Çeşitlerinin (Zea mays saccharata Sturt) Bitki, Koçan ve Verim Özellikleri

Bu araştırma, bazı şeker mısırı çeşitlerinin (Zea mays L. saccharata Sturt) bitki, koçan ve verim özelliklerinin belirlenmesi amacıyla, Eskişehir Osmangazi Üniversitesi Ziraat Fakültesi Araştırma ve Uygulama arazisinde, 2009 ve 2010 yıllarında yürütülmüştür. Araştırmada materyal olarak, Lumina, Merit, Sunshine, Jubile, Challenger ve Yellow Baby ticari çeşitleri ile 2201 hattı olmak üzere toplam 7 adet şeker mısır genotipi kullanılmıştır. Deneme tesadüf blokları deneme desenine göre, dört tekrarlamalı olarak kurulmuştur. İncelenen özellikler bakımından çeşitler arasında önemli farklılıklar saptanmıştır. İki yılın ortalamalarına göre; bitki boyu, 195 (Challenger) ile 230 cm (Merit) arasında; yaprak sayısı 7,9 (Yellow Baby) ile 11,1 adet (Merit) arasında; koçan uzunluğu, 21,9 (Merit) ile 23,8 cm (Lumina) arasında; koçan çapı 48,0 (2201) ile 54,1 mm (Sunshine) arasında; kavuzsuz koçan ağırlığı, 338 (Jubile) ile 406 g (Sunshine) arasında; dekara kavuzsuz koçan verimi, 1934 (Jubile) ile 2325 kg/da (Sunshine) arasında değişmiştir. Bitki özellikleri, koçan özellikleri ve dekara verim bakımından öncelikle Sunshine ve Lumina çeşitlerinin onları takiben Merit çeşidinin, önerilebileceği sonucuna varılmıştır