## 3 Results  
The seeds of all hybrids (by summing the number of seeds of all cobs in a hybrid) were divided into size classes with a class interval of 0.1 mm, and the number of seeds in each thickness class was determined, obtaining the frequency of repetitions for each class. The results are presented in Table 4.  
The values of the parameters for determining the variation curves for each individual hybrid are presented in Table 5.  
\begin{table}
\begin{tabular}{c c c c c c c c c} \hline \multirow{2}{*}{**Crt. No. **} & \multirow{2}{*}{ \begin{tabular}{c} **Seed** \\ **Thickness** \\ \end{tabular}  } & \multirow{2}{*}{ \begin{tabular}{c} **SUM 96521** \\ \end{tabular}  } & \multirow{2}{*}{ \begin{tabular}{c} **LG 2244** \\ \end{tabular}  } & \multirow{2}{*}{ \begin{tabular}{c} **KALISTA** \\ \end{tabular}  } & \multirow{2}{*}{ \begin{tabular}{c} **Seed** \\ **Thickness** \\ \end{tabular}  } & \multirow{2}{*}{ \begin{tabular}{c} **SUM 96521** \\ \end{tabular}  } & \multirow{2}{*}{\ \begin{tabular}{c} **LG 2244** \\ \end{tabular}  } & \multirow{2}{*}{ \begin{tabular}{c} **KALISTA** \\ \end{tabular}  } \\ \cline{3-3} \cline{5-8}  & & & **No. of Seeds** & & & & **No. of Seeds** & \\ \hline
01 & 3.3 & - & - & - & 6.1 & 14 & 91 & 48 \\
02 & 3.4 & - & - & - & 6.2 & 38 & 91 & 63 \\
03 & 3.5 & 4 & - &  
The results on the distribution of separated seeds on the cylindrical sieve with 5 mm \(\times\) 25 mm elongated orifics at different speeds are presented in Table 6 and Figure 7.  
From Figure 7, it can be seen that the number of seeds that passed through the cylindrical sieve with 5 mm \(\times\) 25 mm orifics had a linear tendency to decrease when increasing the revolution speed of the sieve, translating into a larger number of seeds that exited at the end of the equipment, without being fit into one of the calibration classes. Using the data in Table 4, the distribution curves of the distribution by thickness of the seeds of all hybrids were drawn up, as shown in Figure 8. \begin{table}
\begin{tabular}{c c c c c c c c c c c c c} \hline \hline \multirow{2}{*}{**Hybrid**} & \multirow{2}{*}{**Total No of Seeds**} & \multicolumn{3}{c}{**n = 33**} & \multicolumn{3}{c}{**n = 35**} & \multicolumn{3}{c}{**n = 36**} & \multicolumn{3}{c}{**n = 38**} & \multicolumn{3}{c}{**n = 41**} & \multicolumn{3}{c}{**n = 43**} \\ \cline{3-13}  & **T** & **R** & **T** & **R** & **T** & **R** & **T** & **R** & **T** & **R** & **T** & **R** \\ \hline SUM 96521 & 2355 & 2087 & 268 & 279 & 276 & 2071 & 284 & 2066 & 289 & 2061 & 294 & 2059 & 296 \\ LG 2244 & 1757 & 1711 & 46 & 1703 & 54 & 1698 & 59 & 1693 & 64 & 1683 & 74 & 1678 & 77 \\ KALISTA & 2190 & 2011 & 179 & 2003 & 187 & 1996 & 194 & 1988 & 203 & 1981 & 209 & 1976 & 214 \\ \hline \multirow{3}{*}{**Hybrid**} & \multirow{3}{*}{**Total No of Seeds**} & \multicolumn{3}{c}{**n = 44**} & \multicolumn{3}{c}{**n = 46**} & \multicolumn{3}{c}{**n = 47**} & \multicolumn{3}{c}{**n = 48**} & \multicolumn{3}{c}{**n = 49**} & \\ \cline{3-13}  & **T** & **R** & **T** & **R** & **T** & **T** & **R** & **T** & **R** & **T** & **R** \\ \hline SUM 96521 & 2355 & 2058 & 297 & 2053 & 302 & 2052 & 2041 & 2048 & 307 & 2041 & 314 \\ LG 2244 & 1757 & 1676 & 79 & 1673 & 82 & 1672 & 1661 & 1668 & 87 & 1661 & 94 & \\ KALISTA & 2190 & 1974 & 216 & 1969 & 221 & 1966 & 1954 & 1960 & 230 & 1954 & 236 & \\ \hline \hline \end{tabular}
\end{table} 
Table 6: Distribution of separated seeds on the 5.5 mm \(\times\) 25 mm cylindrical sieve. Figure 7: Distribution of seeds on the cylindrical sieve at different revolution speeds. From the analysis of the thickness distribution curves in Figure 8, it can be seen that for SUM 96521 and LG 224 corn varieties, the values were not uniform, but for Kalista, the values were uniform.