Field Performance of Three-way Cross Yellow and White Maize Hybrids in Nepal

Abstract

Maize hybrids can increase production, bridge the yield gap, and boost up domestic production in Nepal. Three-way cross hybrid introduces an alternative to produce low cost hybrid seed for resource poor farmers. A study was performed to identify promising yellow and white maize hybrids developed by International Centre for Maize and Wheat Improvement (CIMMYT), Mexico in Rampur, Nepal. Nineteen three-way cross white maize hybrids with two checks and seventeen yellow maize hybrids with one check were tested in field experiments on 2017 and 2018. Treatments were replicated twice in α-lattice design with each experimental plot of 9.6-m2 (4-m × 2.4-m). AF17A-426-13/14, AF17A-426-1/2, AF17A-426-28/39, and AF17A-426-15/16 were the three-way cross white hybrids produced grain yield of more than 9000 kg ha-1. Similarly, AF17A-473-20/29 and AF17A-473-18/27 yielded about 9000 kg ha-1 among the three-way cross yellow maize hybrids. These hybrids have commercial potentials to increase maize yield in Nepal if the provided parents are successful in the seed production.

Agro-Morphological Characterization and Estimation of Genetic Parameters of Spring Maize Hybrids in the Inner Plains of Far-West Nepal

“…e differences in the plant height, though being nonsignificant, might be because of the fact that the hybrids were from diversified parent lines [7] and checks were also used in the study, which were of high importance in the study area. Similar to our finding, Tripathi et al [37] and Koirala et al [15] reported that plant height was not significantly different in three-way cross yellow maize hybrids and single-cross hybrids, respectively.…”

“…e synthesis silking interval was moderately heritable [35]. High heritability in grain yield and plant height has been reported by Neupane et al [35,36] which contradicted our findings, which are moderately and low heritable traits respectively, but was in line with the findings of Tripathi et al [37]. e expression of a trait is highly influenced by environmental effects and effects on the degree of expression but not on the degree of inheritance [41].…”

Optimizing N Fertilization for Increasing Yield and Profits of Rainfed Maize Grown under Sandy Loam Soil

“…In Nepal, current maize production is 2.71 million tons from a 0.96 million hectare area with an average productivity of 2.84 t ha −1 [2]. Besides being a staple crop of the mid-hill region, maize is the chief ingredient of livestock feeds, especially for rapidly growing poultry [3,4]. Despite the cultivation of several new maize hybrids and improved varieties, national production fails to fulfill total demand, and the country imports maize in large quantities every year [5,6].…”

Varietal evaluation of hybrid maize in the summer and winter seasons in terai region of Nepal

“…Anthesis silking interval between 2-4 days are found to have a positive effect on grain yield of maize i.e. ASI is negatively correlated to yield and a close gap in ASI has been reported in maize hybrid by several researchers [ 23 , 37 , 38 , 39 , 40 , 41 ]. The yield and its components showed dependence on the ASI [ 42 ].…”