Research was conducted at Colby and Tribune, KS, from 2018–2020 to evaluate irrigation strategies, hybrid maturity, seeding rate on corn production. Irrigation strategies were a combination of frequency/timing (weekly or bi-weekly) applied pre- post-silking, amounts (1 1.5 inch/week). Hybrid maturities 108- 111-day hybrids planted 25,000 30,000 seeds/a. Average ranged 7.33 12.50 in. 8.41 13.44 ...

Larger, and deeper, root systems of new maize varieties, compared to older varieties, are thought to have enabled improved acquisition of soil resources and, consequently, greater grain yields. To compare the spatial distributions of the root systems of new and old maize varieties and their relationships with spatial variations in soil concentrations of available nitrogen (N), phosphorus (P) an...

Understanding the genetic bases underlying heterosis is a major issue in maize (Zea mays L.). We extended the North Carolina design III (NCIII) by using three populations of recombinant inbred lines derived from three parental lines belonging to different heterotic pools, crossed with each parental line to obtain nine families of hybrids. A total of 1253 hybrids were evaluated for grain moistur...

Flowering-related traits in maize are affected by complex factors and are important for the improvement of cropping systems in the maize zone. Quantitative trait loci (QTLs) detected using different materials and methods usually vary. In the present study, 266 maize (Zea mays) F2:3 families and 301 recombinant inbred lines (RIL) derived from a cross between 08-641 (founding parent from southeas...

Variation in maize yield across environments often reflects genotype-specific responses in crop-flowering dynamics. The most widely observed effect is the temporal separation of male (anthesis) and female (silking) floral maturity, referred to as the anthesis–silking interval (ASI). Many studies have shown that maize yield also is a function of crop growth rate around flowering. At present, how...

Field experiment was conducted at KPK Agricultural University, Peshawar, Pakistan to find out the effect of planting methods on the yield and yield components of maize varieties. Analysis of the data revealed that planting methods had a significant effect on days to tasseling, days to silking, plant height, number of plants ha at harvest, thousand grain weight, grain yield, biological yield, fr...

A new maize (Zea mays L.) simulation model, Hybrid-Maize, was developed by combining the strengths of two modeling approaches: the growth and development functions in maize-specific models represented by CERES-Maize, and the mechanistic formulation of photosynthesis and respiration in generic crop models such as INTERCOM and WOFOST. It features temperature-driven maize phenological development,...

Maize exhibits a wide range of heterotic traits, but the molecular basis of heterosis at the reproductive stage has seldom been exploited. Leaf senescence is a degenerative process which affects crop yield and quality. In this study, we observed significantly delayed ear leaf senescence in the reciprocal hybrids of B73/Mo17 and Zheng58/Chang7-2 after silking, and all the hybrids displayed large...

Combining ability for grain yield and other traits were evaluated in a half diallel fashion maize. Eight yellow maize inbred lines crossed excluding the reciprocals during summer season of 2018 at Gemmeiza station, resulting 28F1 along with check SC168 two locations (Gemmeiza Sids) 2019 season. A randomized complete block design (RCBD) four replications was used. Mean squares GCA SCA highly sig...

Maize (Zea mays L.), a leading cereal worldwide and staple food of many countries, is multipurpose crop used for human food, animal feed industry purposes. has wider genetic adaptability to grow under different agro-ecological environments. 29 48 DH lines derived from MPS 1 2, respectively, were crossed with more than one testers belonging opposite heterotic in L x T fashion. The resultant doub...