Comparison and evaluation of exotic sweet corn and super sweet corn hybrids in different locations.
2008
A`zizi, Farhad | Khavari Khorasani, Sa`id | Zand, Behnam | Mokhtar Pur, Hassan | Afshar Manesh, Gholam Reza | Khalili, Ma`ruf
The study was conducted to yield and some other traits comparison in exotic sweet corn varieties. To evaluate 8 exotic hybrids ( include 4 common sweet corn hybrids and 4 super sweet corn hybrids) and also hybrid KSC403su as a control, an experiment was laid out in RCB design with 4 replications in 6 locations ( Karaj , Mashad, Gorgan, Jiroft, Varamin and Miyandoab) in 2 Planting dates with 20 days interval. There were four lines in each plot in 5.4 meter length. Plant density was 75000 plant/ha. The distance between planting rows and between seeds on each row were 75 cm and 18 cm respectively. All agronomical operations such as weed control ,chemical control of pest and diseases, irrigation and so on were conducted based on the current methods in the maize and forage crops research department. Combined analysis and separate analysis for each location, showed that Location was significant for all the traits. Therefore, locations have different effects on the traits. Planting date also was significant for all the traits except ASI and ear length. These results showed that most of the traits affected by different planting dates. Some traits increased and some other traits decreased in different planting dates. Variety was also highly significant for all the traits. Means comparisons demonstrated that different varieties have different responses to different locations. Hybrid KSC403su has less seed yield per plant than other hybrids in Karaj, Mashad, Gogan and Varamin. Hybrid Basin was better than the others in seed yield in Karaj, Varamin and Mashad. In Gorgan and Jiroft, Hybrids Obsession and Harvest gold had more seed yield per plant than the others.
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