GENOTYPE ENVIRONMENT INTERACTION FOR SUNN PEST Eurygaster integriceps PUTON INFESTATION IN DURUM WHEAT
Mesopotamia Journal of Agriculture,
2012, Volume 40, Issue 0, Pages 352-362
AbstractDurum wheat varieties (Karonia, Um Rabie, Korfila, Semito, Crezo, Aksad , Sham3 and Atra S) were planted at the Faculty of Agriculture and Forestry Research Station, Duhok University, during the two seasons 2007/2008 and 2008/2009 to study genotype- environment interaction for crop traits (1000 grain weight, harvest index, protein sedimentation, germination percent and grain yield) and traits related to Sunn Pest infestation (numbers of mature, adults and nymphs of Sunn Pest, percent of infested grains per spike, number of infested leaves/m2, percent of non-carriers tillers/m2 and percent of infested spikes/m2). Combined analysis of variance for traits data of the two seasons showed that seasons mean square was significant at 5% level for harvest index and grain yield and non significant for remaining traits. The varieties mean square was significant for all traits except for number of adults Sunn Pest and germination percent. It was shown from Duncan's multiple range test that , the genotype environment interaction was significant for all traits except for number of adults Sunn Pest. Maximum grain yield was recorded by variety Crezo for both seasons (1115.6 & 1118.7 kg/donum) respectively, that is due to its surpass in other crop traits, and the reduction of Sunn Pest infestation related traits means.
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