MORPHOLOGICAL AND PHYSIOLOGICAL CARACTERISTICS OF CORN WHICH INFLUENCE ON THE GRAIN MOISTURE LOSS

• Main Authors: GUSTAVO PAVAN MATEUS, CLAUDEMIR ZUCARELLI, CLÁUDIO SANSÍGOLO, MAURÍCIO DUTRA ZANOTTO, JOÃO NAKAGAWA, SÍLVIO JOSÉ BICUDO, JOSIANE MARLLE GUISCEM
• Format: Article
• Language: English
• Published: Associação Brasileira de Milho e Sorgo 2002-08-01
• Series: Revista Brasileira de Milho e Sorgo
• Subjects: Zea mays; moisture loss; grain; dry down
• Online Access: http://rbms.cnpms.embrapa.br/index.php/ojs/article/view/20/19

Corn cultivars with quick grain moist me loss are very important since they cancounterpart harvesting delay. The purpose of the present research was to evaluate the influenceof corn plant characteristics in grain water losses after reaching physiological maturity. Tenmaize cultivars (AG122, AG9012, AG8012, AG5012, AG1051, C901, Z8501, Z8452, Z8392and XL370), were grown on Reddish Nitosols in São Paulo, Brazil. The experimental designwas a randomized block with five replications, and the following characteristics were evaluated:number of days from sowing to flowering, from sowing to 15% grain moisture content, from flowering to physiological maturity, grains water content from 33% to 15% twice per week,ear diameter with and without husks, number of kernel rows, cob diameter, cob total extractives,lignine, hollocellulose, cob and husk ash content, number, area and dry weight of husks, graindepth as well as husk grammage. The husk total extractive content, husk grammage, number ofkernel rows, grain depth days from sowing to physiological maturity, days from sowing to 15%of grains water content and filling period affect the amount of grain water loss in corn cultivars.