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 .