he present investigation aimed to determine phenotypic and genotypic stability of some long staple cotton genotypes using stability statistical analysis. Also to identify the range of similarity and diversity between these genotypes. Twenty one genotypes besides three check varieties, (promising cross [(G.89 x Karshenky) x G.86] x G.94 and two check genotypes: G.94 and G.86, were evaluated under six locations i.e.,(Kafr El-Sheikh, El-Dakahleia, El-Monofeia, El-Sharkeia ,El-Gharbeia and El Behera) during 2016 season for yield and its components. The results showed that variances due to genotypes, environments and genotype x environment interaction were highly significant for all studied traits except genotypes for boll weight was significant, which indicated that these genotypes interacted differentially with environments. The heritability values were high for studied traits (over50%) indicating that the phenotypic selection for these strains could be highly effective. The results of phenotypic stability showed that the genotypes No.1 and No. 18 for boll weight, No.9 for seed cotton yield and No.7 for lint cotton yield had phenotypic stability. Average genotypic stability recorded by genotypes No.12,21 and 23the (chick varietyG.94) for all studied traits and surpassed chick varietyG.86 .Nine genotypes No.1,2,5,12,13,18,21,22 the(promising cross [(G.89 x Karsh.) x G.86] x G.94 and 23 exhibited average level of stability also genotypes No.7,8 and 14 observed above average of stability at probability level of 0.95 for boll weight, while twelve genotypes No.

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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.

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The present work was carried out in three successive seasons from 2014 to 2016.at Sakha Experimental Station at Kafr El-Sheikh Government, Agricultural Research Center. Four cotton genotypes i.e., Giza 94, Uzbekstan1, TNB and BBB as (lines) which were crossed to two genotypes i.e., CB 58 and Giza 45 as (testers) by using the mating design line x tester. General (GCA) and specific (SCA) combining abilities and their effects as well as heterosis and heritability were estimated in parents, F 1 's and F 2 's populations for the traits, yield and its components and fiber properities to define the best parents and crosses to be used in breeding programs to improve cotton traits. Giza 94 x CB 58 gave the highest mean performance values in F 1 's for seed and lint cotton yields/ plant, fiber length and its uniformity while, for boll weight in both F 1 's and F 2 's crosses for the cross of Uzbekstan1x CB 58 had the highest mean performance value in F 2 's crosses for seed and lint cotton yields/ plant while for the cross BBB x CB 58, it gave the highest mean performance in both F 1 's and F 2 's crosss for lint %. All the tested crosses showed significant positive mid-parent heterosis. SCA variances were higher in magnitude as compared to the GCA ones. The nonadditive gene effects were larger in magnitude than the additive ones and revealed the major role in the heredity of all traits under studying. The two crosses Giza 94 x CB 58 and BBB x Giza 45 ranked first in this respect. The line Giza 94 and, the tester Giza 45 had the best ranking as combiners for almost traits. The estimated proportion contributions of used lines were higher in magnitude than those of both testers and lines by testers interactions for the following traits: seed cotton yield/ plant, fiber length and Uniformity ratio; while testers proportion contributions were higher than those estimated for lines and lines by testers interactions for boll weight, lint % and fiber strength. The higher value of broad-sense heritability (99.0%) was recorded for the trait seed cotton yield /plant and the lower value (26.12 %) was recorded for fiber length in F. Heritability estimates in narrow-sense ranged from 0.25-29.31 % for uniformity and lint %, respectively. The cross Giza 94 x CB 58 could be used in breeding program for improving seed and lint cotton yields due to both parents. Giza 94 and CB 58 varieties were first in ranking as combiners for yield and its component. In addition the hybrids BBB X CB 58 and Uzbekstan1 X CB 58 could be used for improving the same traits because one of the involved parents was good combiner.