家系内选择(within-family selection)是指在家系内根据每个个体偏离家系 均值的远近来挑选单株,凡超过家系均值的最大者,既为入选优良个体。既在 家系内挑选优良单株。
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家系选择与家系内选择 Family selection and within family selection
家系内单树选择增益 within-family individual tree selection
在中国内地，国家科学基金会是唯一在全国范围内接受科学家和研究人员以自由申请方式申请项目，同时采用同行评议专家系统进行评审，并选择最好的项目给予资助的组织。
It is the unique organization in China that accepts free applications from Chinese researchers all over the country in basic research and adopts the peer review system to select the best for support.
加强对种内扦插生根率变异性的研究，选择生根力强的无性系、家系或种源；
Researches on rooting rate variation should be undergone to identify the clones, families and provenances with strong rooting capacity and high survival rate.
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