Differences in rates of leaf appearance among maize hybrids and phases of development

• Published in: Canadian journal of plant science Vol. 64; no. 3; pp. 759 - 763
• Main Authors: Tollenaar, M, Muldoon, J.F, Daynard, T.B
• Format: Journal Article
• Language: English
• Published: Ottawa, ON Agricultural Institute of Canada 01-01-1984
• Subjects: Agronomy. Soil science and plant productions; Biological and medical sciences; corn; Economic plant physiology; Fundamental and applied biological sciences. Psychology; General agronomy. Plant production; Generalities; Generalities. Agricultural and farming systems. Agricultural development; Growth and development; hybrids; leaves; plant development; Monocotyledones; Zea mays; Gramineae; Angiospermae; Development; Hybrid; Spermatophyta; Plant leaf; Developmental stage
• ISSN: 0008-4220; 1918-1833
• DOI: 10.4141/cjps84-104

Rates of leaf appearance were evaluated for three maize (Zea mays L.) hybrids grown at two day/night temperatures (20/17 °C and 30/27 °C) in environmentally controlled growth facilities, and for 10 maize hybrids grown in the field. Differences in rate of leaf appearance occurred among genotypes and among phases of development for maize hybrids grown both under controlled-environment and field conditions. Differences in mean rate of leaf appearance between two hybrids common to both experiments were approximately 15% in both the field and the controlled-environment experiments. In addition, hybrid × phase-of-development interactions were highly significant.Key words: Zea mays L., rate of development, temperature, genotype × phase-of-development interaction