<> "The repository administrator has not yet configured an RDF license."^^ . <> . . . "Exploiting Grain-Filling Rate and Effective Grain-Filling Duration to Improve Grain Yield of Early-Maturing Maize"^^ . "Early-maturing maize (Zea mays L.) genotypes yield 15 to 30% less than late-maturing genotypes. One strategy for improving grain yield in the early-maturing group involves assessment of grain-filling traits as secondary traits for selection for high grain yield. In this study, we investigated the possibility of using grain-filling rate and duration for improving grain yield in early-maturing tropical maize. Forty-four hybrids generated using North Carolina design II were evaluated at CIMMYT-Zimbabwe during the 2011/2012 season under irrigated and nonirrigated environments. Although grain-filling rate and effective grain-filling duration were negatively correlated, several hybrids were distinctly above the trend line. The earliest-maturing hybrid took 127 d to reach physiological maturity and produced grain yields comparable to those of the medium-maturing genotypes (7 t ha−1). It had a high grain-filling rate of 2.40 g per plant d−1 (18% higher than those of the low-yielding hybrids) and a relatively longer effective grain-filling duration. Grain-filling rate and effective grain-filling duration had high coefficients of genetic determination, positive correlations with grain yield, low error terms, and low genotype × environment interactions, making them appropriate selection traits for improved grain yield. The study shows that it is possible to develop high-yielding early- to medium-maturing maize hybrids based on favorable combining ability values for grain-filling rate and duration."^^ . "2013" . . "53" . . "Crop Science Society of America"^^ . . . "Crop Science"^^ . . . "0011183X" . . . . . . . . . . . . . . . . . . . . . . "P T"^^ . "Gibson"^^ . "P T Gibson"^^ . . "P"^^ . "Setimela"^^ . "P Setimela"^^ . . "R"^^ . "Edema"^^ . "R Edema"^^ . . "E"^^ . "Gasura"^^ . "E Gasura"^^ . . "A"^^ . "Tarekegne"^^ . "A Tarekegne"^^ . . "P"^^ . "Okori"^^ . "P Okori"^^ . . . . . . "Exploiting Grain-Filling Rate and Effective Grain-Filling Duration to Improve Grain Yield of Early-Maturing Maize (PDF)"^^ . . . . . "Exploiting Grain-Filling Rate and Effective Grain-Filling Duration to Improve Grain Yield of Early-Maturing Maize (Other)"^^ . . . . . . "Exploiting Grain-Filling Rate and Effective Grain-Filling Duration to Improve Grain Yield of Early-Maturing Maize (Other)"^^ . . . . . . "Exploiting Grain-Filling Rate and Effective Grain-Filling Duration to Improve Grain Yield of Early-Maturing Maize (Other)"^^ . . . . . . "Exploiting Grain-Filling Rate and Effective Grain-Filling Duration to Improve Grain Yield of Early-Maturing Maize (Other)"^^ . . . . . . "Exploiting Grain-Filling Rate and Effective Grain-Filling Duration to Improve Grain Yield of Early-Maturing Maize (Other)"^^ . . . . . "HTML Summary of #7421 \n\nExploiting Grain-Filling Rate and Effective Grain-Filling Duration to Improve Grain Yield of Early-Maturing Maize\n\n" . "text/html" . . . "Maize"@en . .