diff --git a/popcorn/Assets/MyGame/Scenes/CornField/Scripts/CornField.cs b/popcorn/Assets/MyGame/Scenes/CornField/Scripts/CornField.cs
index 535e168c..ed3f790e 100644
--- a/popcorn/Assets/MyGame/Scenes/CornField/Scripts/CornField.cs
+++ b/popcorn/Assets/MyGame/Scenes/CornField/Scripts/CornField.cs
@@ -82,12 +82,12 @@ public class CornField : MonoBehaviour
             }
         }
         GameDataManager.SaveGameData();
-        Debug.Log(gameData.SeedlingDataList.Count);
 
         // 株設定
         foreach (var line in availableLines)
         {
-            var lineData = gameData.SeedlingDataList.First(x => x.type == line.LineName);
+            var seedlingDataIndex = gameData.SeedlingDataList.FindIndex(x => x.type == line.LineName);
+            var lineData = gameData.SeedlingDataList[seedlingDataIndex];
             var i = 0;
             foreach (var seedling in line.Seedlings)
             {
@@ -118,10 +118,9 @@ public class CornField : MonoBehaviour
                         });
                     }
                     // 新しい苗
-                    var seedlingDataIndex = gameData.SeedlingDataList.FindIndex(x => x.type == line.LineName);
                     var newGene = GenerateSeedlingGene(line.FieldLevel);
-                    gameData.SeedlingDataList[seedlingDataIndex].Seedlings[index] = newGene;
                     seedling.SetSeedlingGene(newGene.firstTime, newGene.period, newGene.level);
+                    gameData.SeedlingDataList[seedlingDataIndex].Seedlings[index] = newGene;
                     GameDataManager.SaveGameData();
                 }).AddTo(compositeDisposable);
             }
@@ -133,26 +132,21 @@ public class CornField : MonoBehaviour
             VibrationManager.Instance.PlayVibrationOnce();
             foreach (var line in availableLines)
             {
-                var lineData = gameData.SeedlingDataList.First(x => x.type == line.LineName);
-                var i = 0;
-                foreach (var seedling in line.Seedlings)
+                var seedlingDataIndex = gameData.SeedlingDataList.FindIndex(x => x.type == line.LineName);
+                for (int i = 0; i < line.Seedlings.Count; i++)
                 {
                     if (Random.Range(0, 2) == 0)
                     {
-                        var tmpData = lineData.Seedlings[i];
+                        var tmpData = gameData.SeedlingDataList[seedlingDataIndex].Seedlings[i];
                         tmpData.firstTime = tmpData.firstTime.AddSeconds(-1);
-                        seedling.PromoteGrowth(tmpData.firstTime);
-                        lineData.Seedlings[i] = tmpData;
+                        line.Seedlings[i].PromoteGrowth(tmpData.firstTime);
+                        gameData.SeedlingDataList[seedlingDataIndex].Seedlings[i] = tmpData;
                     }
                 }
-                var seedlingDataIndex = gameData.SeedlingDataList.FindIndex(x => x.type == line.LineName);
-                gameData.SeedlingDataList[seedlingDataIndex] = lineData;
             }
             // 設定のセーブ
-            Debug.Log($"{gameData.SeedlingDataList[0].Seedlings[2].firstTime} {gameData.SeedlingDataList[0].Seedlings[0].period}");
             GameDataManager.SaveGameData();
         }).AddTo(compositeDisposable);
-        Debug.Log($"{gameData.SeedlingDataList[0].Seedlings[2].firstTime} {gameData.SeedlingDataList[0].Seedlings[0].period}");
     }
 
     private SeedlingProgressData GenerateSeedlingData(PlantLineType type, CornFieldRank level)