The contents of ureotelism and globulin increased and hemoglobin decreased with inbreeding coefficient in systematic breeding.
尿素氮和球蛋白含量在系统选择中随近交系数的上升而下降，血红素含量却上升。
Except for a few gratuitous successes, which I am prepared to admit, systematic cross-breeding has never produced good results.
除了少数无偿成就，我很乐意承认，有系统的杂交育种，从未产生了良好的效果。
The germplasm resources of cucumber are relatively abundant in China, the systematic analysis of which will have important value on the instruction of breeding work.
我国黄瓜种质资源丰富，对黄瓜种质资源进行系统分析，对指导育种实际工作有着重要的理论价值。
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