Development of hybrid genotypes more need to increase the edible oil production and it qulity traits because of increasing the human population. Eight genotypes (Golarchi, Star, Range, DGL, Ayub2000, Hybripol, Lagena and BA0714.) were crossed in Line x Tester mating design (5x3). and their F1s were sown in field in RCBD with three replications. Data of 15 F1s and their parents were recorded for various seed yield and yield contributing traits. The data were statistically analyzed for analysis of variance and LxT analysis. The ANOVA for combining ability were revealed that the mean sum of squares due to lines were significant for all traits except days to 90% flowering and for testers the mean sum of square were significant for all traits except days to 90% flowering and 1000 seed weight. Highly significant results were found in LxT interaction for all traits. The estimates of SCA variance was noticed higher than GCA variance in all traits. The contributions of lines as compared to testers were greater in case of all the traits of Brassica napus."

Development of hybrid genotypes/ high yielded varieties more demand to fill the gap between food production and human population.Heterosis and Combining Ability Studies in Brassica napus leads to develop the hybrid genotypes/ Varieties which will be produce more seed yield, plant biomass(fodder or Saag), oil contents, protein contents and canola type traits for good health.In an experiment Sixteen genotypes were crossed among eleven lines and five testers in Line x Tester mating design (11x5),55 F1 were made and Data of hybrids and their parents were recorded for various seed yield and yield contributing traits. The results revealed that highly significant values were found in line x tester interaction for all the traits except the character days taken to 50% maturity. The estimates of SCA variance was noticed higher than GCA variance in all the recorded traits.The significant potence ratio were explained that the transformation of desirable gene in all the recorded traits of genotypes in dominance type of gene action for the development of hybrids or varieties in Brassica napus."

Sugarcane is one of the major sugar crops of the world. In Pakistan, it occupies a significant position in the agricultural economy. The present investigations were carried out to examine the genetic variability and contribution of some morphological characters for cane yield and response of genotypes of sugar cane toward callus formation, regeneration and screening for virus. The results pertaining to analysis of variance elucidated highly significant differences among the accessions for all the traits. The tissue culture study revealed that at different treatment over all performance of HSF-247 was better for callus induction and genotype HSF-242 performed best at 3mg/l of 2, 4-D level. All the investigation in the correlation study proved quite successful because a handful increase in cane weight and plant height is possible as they provide information regarding a suitable combination of characters with their maximum influence on the enhancement of cane weight and plant height. The clone will be selected with such combinations of characters which to give maximum improvement in their cane yield.

Sugarcane is a major cash crop of the world and occupies significant position in agricultural economy of Pakistan Study on correlation and path coefficient analysis on ratoon crop for cane yield and yield related traits in 20 accessions of sugarcane (Saccharum officinarum L.) was conducted in the field of the Department of Plant Breeding and Genetics, University of Agriculture, Faisalabad, during the 2008-09.Analysis of variance indicated highly significant differences among the accessions for all the traits. Among the traits plant height, leaf area, dry matter contents, bagasse weight and cane yield had the positive and significant correlation with brix value at genotypic level. Molecular markers are useful for assessment of variation and phylogenetic relationships. Out of 30 fragments amplified with 15 primers used among the 10 sugarcane somaclones and a parent plant, only 3 bands were polymorphic while rest of the 27 bands were monomorphic. Therefore, it may be concluded from the present results that SSR markers can be used for the identification of somaclonal variation and the relationship between parents and somaclones.