PRODUCTIVITY STUDY ON SEX GENOTYPES OF CORN (Zea mays L.) IN SULAIMANI /IRAQ.

Abstract

This research was implemented in Bakrajo Technical Agricultural Institute/ Sulaimani governorate during autumn season 2012 in Classic clay sandy soil to test six genotypes of Zea mays L. using RCBD design .The results showed that there were significant differences(p≤0.05) between the plant genotypes for the studied characters as in the following :- The Hollandaian genotypes was higher in the characters (mean of grain weights 340.6 gm/plant but the Iranian genotype superior in the characters (mean of Ear weight 220.3 gm ,mean number of grains per ear rows 37.4 grains/row and mean of ears length 21.7 cm).The local genotypes showed only a super pass in the characters of mean number of ears 1.7 ear/plant. The Hollandian genotype F1 exceeded in(mean weight of only core 77.23 gm/ear and mean number of rows per ear 15.5 rows). The Hollandaian genotype F2 was higher at the characters (weight of 1000 grains by 383.3 gm).The Hollandaian genotype F3 was supervised in the characters (mean plant height 226.65 cm ,mean number of ears 1.7 ear/plant , mean of leaves width 9.8 cm and mean of on leaf area 574.05 cm2 .