Individual Selection in Two Population of Segregation Based on Yield and Yield component

Abstract

Wheat became an important cereal crops plant lately.  Grain consumption  increase year by year and it is covered by import. Now,  government concern to  the research and development of wheat in Indonesia. This research was carried out September 2012 to January 2013 in Nagari Alahan Panjang, sub-district of Lembah Gumanti, The district of Solok, West Sumatra Province. The purpose of this research was to select some plants in each population based on yield and yield component, in order to improve their characters in the next generation of plant.  The research used  two F2 populations (F2-1 and F2-2) derived  from Slovakia and Selayar as a local variety.  Each population F2 was planted as many as 240 seeds in two beds and Selayar in one bed consist of 120 seeds.  Observations was done on spike length, number of  productive tillers,  number of spikelet and yield.  The result showed that  broad sense heritability of those characters was high.  There were 16 plants selected from F2-1 population  and 14 plants selected from F2-2 population which have productive tillers more than 35. Hence, Spike length has a correlation with yield.  Both of F2 population selected individual plants whose spike above 11 cm.  Therefore, it was selected 14 plants in F2-1 and 10 plants in F2-2.  Spikelet number of spike influence the yield so that selection based on it will be important. In F2-1 population, it was selected 11 plants having more 25 spikelet numbers.  On the other hand, it was selected 24 plants in F2-2 population having more than 20 spikelet numbers.  The everage yield (grain weight) of these populations was different.  There were 11 plants selected in F2-1 population whose grain weight more than 18 gr.  Thus, there were only 3 plants selected in F2-2 population whose grain weight more than 10 gr.