STUDIES ON STANDARD HETEROSIS OF SINGLE CROSSES OF TROPICAL WHITE MAIZE FOR GRAIN YIELD AND YIELD CONTRIBUTING TRAITS
Journal Title: International Journal of Agricultural Science and Research (IJASR) - Year 2017, Vol 7, Issue 2
Abstract
In Ghana, low yields of 1.7 t ha-1 has been reported .This prominent difference in grain yields has been attributed partially to the use of open pollinated varieties (OPVs), shortage of high yielding varieties, biotic and abiotic stresses. Thus, the present study was designed to estimate the magnitude of heterosis of the single crosses over checks for yield and yield-contributing characters. A line x tester mating design involving sixteen white maize inbred lines as females and two testers as males generated thirty-two single crosses. These hybrids and three checks were evaluated using a 5 x 7 alpha lattice design replicated twice at the University of Ghana, WACCI research farm during 2015/-16 offseason using drip irrigation. Heterotic effects were observed for grain yield, days to 50% anthesis, days to 50% silking, anthesis-silking interval, plant height, husk cover , ear height, maize streak virus, plant aspect, ear length, ear rot, number of kernel rows ear-1 and number of kernels row-1, however the magnitude varied with characters. From this study hybrids L8 x T2, L1 x T2, L16 x T1, L16 x T2 L4 x T2, L9 x T1 exhibited 54%, 45%, 41% 26%, 24% and 24% heterosis for grain yield respectively, over best check Obatanpa.
Authors and Affiliations
YAZACHEW GENET EJIGU, BEATRICE ELOHOR IFIE, PANGIRAYI BERNARD TONGOONA
Keywords
Related Articles
- EP ID EP222753
- DOI -
- Views 127
- Downloads 0
Emperical Relationship of Grain Yield and Dry Mass of Maize with Nutrients Supplied Trough Soils, Fertilizer and Removed by Crop
Investigations were carried out on Response of Maize (Zea mays L.) grain yield (kg/ha) and ratio (kg/kg) to the nutrients applications in Telangana state (Soil Test Crop Response Correlation) during 2008 and 2009 at Regi...
Correlation and Path Coefficient Analysis in Bird’s Eye Chilli (Capsicum Frutescens L.,) for Yield and Yield Attributing Traits
Thirty six bird’s eye chili accessions were evaluated in Randomized Complete Block Design (RCBD) with two replications at the college of Horticulture, Mudigere (Karnataka). Correlation and path analysis worked out for fi...
Technical Efficiency of Tapioca Cultivation in Salem District
This study examined the technical efficiency of Tapioca cultivation in Salem district. Technical efficiency is considered to be an important determinant of productivity growth and international competitiveness in any eco...
Studies on Fruiting and Fruit Quality Characteristics in Tissue Cultured Plants of Pomegranate cv. Bhagwa
A study was undertaken to investigate the possible effects of different chemicals (Nitrobenzene (NB) @ 1.0 ml plant-1, NB @ 1.5 ml plant-1, NB @ 2.0 ml plant-1, Cycocel (CCC) @ 500 ppm plant-1, CCC @ 1000 ppm plant-1, CC...
Influence of Pre-Emergence Herbicides on the Soil Microflora During the Crop Growth of Transplanted Rice
The use of herbicides in transplanted rice may affect the biological equilibrium of the soil and thus influence the nutrient status, health and productivity of the soil. To study the effect of herbicides on soil microbia...