DETERMINING RELATIONSHIPS BETWEEN MORPHOLOGICAL, SOME ANATOMICAL TRAITS AND PHENOLES REALATED TO INSECT RESISTANCE IN TWO CROSSES COTTON

 This invstigation aimed to study the importance of morphological and anatomical traits with total phenols in leaves and bolls for insect resistance and evaluate the hybrids of Giza 88 okra leaf shaped and cultivar Giza 88 with promising cross  [{G.84 x(G.70 xG.51B) x pima 62 }].The trial was conducted at Sakha Research Station during 2010 and 2011summer seasons. The results indicated that the leaves of line G.88 okra leaf characterized by narrow lobes while Giza 88 was wider lobes. Giza 88 characterized by increase for size of leaf nectaries and No. of bolls nectaries. Total phenols in leaf was high for the parent Giza 88 okra leaf, while F1 was intermediate between its two parents. The anatomical study revealed narrow difference between anatomy structural of the two parents Giza 88 and line Giza 88 okra for leaves. Anatomical features were observed, firstly the extension of the palisade tissue towards the mid vein of two parents exhibited palisade tissue, secondly the presence one in G.88 okra while G.88 had two small reverse oriented bundles separated. The F1 had not small reverse oriented bundles. The results of principal components exhibited that the two factors I and II were more importance about 87.45% of total variance, while the two factors III and IV were less importance about 21.11% of total variance .Factor I accounted for 40.32% of total variance including lobbing index , spongy tissue thickness, mid vein thickness, width of main vascular bundle and No. of xylem rows had positive loading indicates the direction of relationship between factor and variables .Factor II  accounted for 38.13% including laminar thickness, spongy tissue thickness ,  width of main vascular bundle, No. of xylem vessels in row and total phenols of leaves and bolls, the results of anatomical traits play considerable role for resistance with that total phenols. It could be concluded that traits of laminar thickness, spongy tissue thickness, width of main vascular bundle and No. of xylem vessels in row have interrelation ship with total phenols of leaves and bolls that these traits play the main role in insect resistance. It could be concluded that traits of laminar thickness, spongy tissue, width of main vascular bundle and No. of xylem vessels in row have interrelationship to total phenols as indication for insect resistance in positive direction, no differences were noted between the structural anatomy of the two parents Giza 88 and line Giza 88 okra leaf for leaves, but the leaves of line G.88 okra varied morphologically by narrow lobes.