عنوان مقاله [English]
نویسندگان [English]چکیده [English]
Effects of morph physiological characteristics on yield and yield components of corn grain were investigated. An experiment was conducted in the experimental Field of Abourayhan Campus, University of Tehran. The experimental design was a block in split plot arrangement with four replications. Planting dates were as main factor with three levels (4th, 14th and 25th June) and four varieties (Single Crosses 108, 301, 604 and 704) were subfactors.
The results of the experiment showed that plant height, harvest index and total dry weight in all sampling stages, phenology stage duration, abortion percent, morphological characteristics were signaficantly different among varieties. However, Single Cross 704 had the highest harvest index and total dry weight, but single cross 604 had the highest yield. Interaction effects between planting date and variety on plant height, harvest index and total dry weight in all sampling stages were significantly different, but grain yield had no difference, third planting date and Single Cross 604 had the minimum abortion percent and maximum yield components.