Genetic diversity of 27 chickpea genotypes was studied through Mahalanobis D2 and Principal Component analysis. The genotypes under study fall into five clusters. The cluster II contained the highest number of genotypes (11) and Cluster I contained the lowest. Cluster I produced the highest mean value for number of pods per plant. The inter cluster distances were much higher than the intra cluster distances. Cluster V exhibited the highest intra cluster distance while the lowest distance was observed in cluster I. The highest inter cluster distance was observed between cluster I and II while the lowest was between cluster III and V. Considering all the characters, it was suggested that the genotypes BD6549, BD6603, and BD6548 could used as parents for future breeding programs to develop high yielding varieties of chickpea. DOI: http://dx.doi.org/10.3329/bjar.v37i1.11184 Bangladesh J. Agril. Res. 37(1): 129-136, March 2012
Background Sports performance is achieved through working, training of all major components i.e. technique coordination, tactics, physical fitness and psychological qualities. This apart coordinative abilities like orientation, differentiation, reaction, balance and rhythm play a big role. Objective The objective of the study was to determine the relationship among coordinative abilities between Tennis and Squash men players. Design Cross-sectional. Participants The samples were 20 Tennis and 30 Squash Inter University players between 18-25 years. Main outcome measurements The coordinative abilities studied were orientation, differentiation, reaction, balance and rhythmic. Test items used for different abilities were Zigzag run, backward medicine ball throw, lateral jumping ability, beam walk and long nose tests to find the difference in performance of the players. Mean, standard deviation and 't' test were used as statistical tools and level of significance was 0.05 . ResultsThe study showed quite interesting results as the game of tennis and squash are racket games and have many skills very similar to each other. The difference lies in the area of the court, the equipment used for play and the time limit of game. Tennis players have shown better performance in Orientation, differentiation, balance and rhythmic abilities due to the above difference and is in line with other studies done by Lees (2008), Miller, et al. (2001 etc. The only variable in which the squash players have shown some significance is the reaction ability which may be due to small area of play and the need to be quick as the time is too short to respond to the shots during the game. Conclusion It is concluded that there exists significant difference in terms of all the coordinating abilities between the tennis and squash players and that the tennis players possessed better coordinating abilities than the squash players.
GGE biplot study is an effective tool for many crops including rice to identify mega-environments, ideal trial site and suitable genotypes for general and specific adaptation. An attempt was made to find promising T. Aus rice genotypes having suitable grain quality, better agronomic parameters and ideal test location for T. Aus rice growing areas. In this study, a total of 11 promising genotypes along with two popular cultivars BR26 and BRRI dhan48 were tested across six locations; Cumilla, Gazipur, Rajshahi, Rangpur in T. Aus 2016 and 2017 whereas Habiganj and Kushtia only in T. Aus 2017 season. From GGE biplot study, BRRI RS, Rajshahi (E8) was the most discriminating and ideal location for evaluating T. Aus rice genotypes in Bangladesh condition while BRRI RS, Cumilla 2016 (E1) showed the least discriminating ability and the least representative location. From two years combination data, BR9011-19-1-2 (G6) recorded the highest average grain yield (5.11±0.68 t ha-1) but BR9011-46-2-2 (G2) was the most stable genotype having grain yield (4.97±0.62 t ha-1) and other stable genotypes with above average yield were BR9011-67-4-1 (G5), BR9011-34-3-2 (G1), BRRI dhan48 (G13), BR9039-28-3-2 (G9) and BR9039-9-1-3 (G8) indicated that these genotypes adapted to favourable environments. BR26 (G12) was found highly variable and less stable across the test environments. In addition, agronomic trait (plant height, growth duration) and grain quality traits were also considered for suitability and wider adaptation in T. Aus growing areas in Bangladesh. BR9011-46-2-2 (G2) and BR9011-19-1-2 (G6) were the better genotypes in most of the locations but, considering all of the parameters, the newly developed rice breeding line BR9011-67-4-1 (G5) has been identified as suitable genotype to release as a new variety for sustainable T. Aus rice production in Bangladesh. Bangladesh Rice j. 2019, 23(2): 77-85
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