Effect of Limited Water Supply on Photosynthetic Characteristics of Spring Maize (Zea Mays)

Abstract:

A trial was carried out to investigate the effect of limited water supply on leaf area duration (LAD), relative growth rate (RGR), crop growth rate (CGR), and above-ground biomass (AB) of spring maize. The results indicated that the LAD was significantly (p<0.05) increased by 10.6%, 15.4%, 16.9%, 19.3%, 13.4% and 17.0%,12.2%, 19.7%, 18.4%, 20.9% in MI₁, MI₃, MI₄, MI₅, CK than MI₂ during both 12-leaf stage to heading and heading to silking. There was no significant difference (p>0.05) in RGR among all the treatments and check during 6-leaf to 12-leaf stage and silking to middle grain filling, but significant difference occurred during other measured stages. Also, significant difference was found in CGR among some treatments and check during all the measured growth stages. The maximum AB of maize was maintained in CK with 23.0 t ha^-1, significantly improved by 16.2%, 16.2%, 22.3% and 41.1%, 35.3% respectively than in MI₁, MI₄, MI₅ and MI₂, MI₃, and the minimum AB was recorded in MI₂ with 16.3 t ha^-1.

• Periodical: Applied Mechanics and Materials (Volume 404)
• Pages: 420-424
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.404.420
• Online since: September 2013
• Authors: Heng Jia Zhang, Jun Hui Li
• Keywords: Above-Ground Biomass, Crop Growth Rate, Leaf Area Duration, Limited Water Supply, Relative Growth Rate, Spring Maize

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