湿地松是我国南方重要的生态、用材和采脂树种，经过数十年引种驯化，生长性状获得较大的增益；然而涉及到树干强度等需要破坏性取样的性状只能小规模抽样调查；松脂相关的性状由于取样方法较繁杂、测试费用高，研究进展不大。同时，当前材性和松脂性状相关性研究近乎空白，缺乏材脂兼用湿地松选择基础。无损评估（Nondestructive Evaluation, NDE）技术是现代多学科融合发展的产物，为大量工农业生产和科研提供了快捷、无损伤的评估方法， 这为活立木材性、松脂性状的规模性测定奠定了基础。本项目以声波（AV）、Pilodyn和近红外（NIRs）技术为基础，建立湿地松弹性模量、基本密度和松脂相关性状的无损评估模型，在湿地松大育种群体中开展活立木材性和松脂性状的无损评估，揭示其遗传规律和回归关系，并以指数选择为基础建立材性和松脂性状的联合选择模型，为材脂兼用树种的选择奠定理论基础。

Slash pine(Pinus elliottii Engelman var. elliottii) is an important tree species in forest ecosystems and plantation for log and resin in the southern China. Some large gains for growth traits of slash pine are available by the introduction and domestication for decades. Wood properties, especially those tested by destructive sampling traits such as stiffness and bending strength, were improved poorly because of the difficulties of sampling survey. The resin traits, which are tested with complexed method and high cost, have not made great progress. Then the researches on the relationship between the traits of wood properties and resin traits are almost in a blank. Nondestructive evaluation(NDE) technology is a wide group of analysis techniques used in science and industry to evaluate the properties of a material, component or system without causing damage. Because NDE does not permanently alter the article being inspected, it is a highly valuable technique that can save both money and time in product evaluation, troubleshooting, and research. The development of NDE technologies provides the potential to research the wood properties and resin traits for standing trees of slash pine based on a large sampling. In this study, the predicted models for slash pine Modulus of Elasticity (MOE), basic density and resin traits will be constructed based on the NDE technologies of Acoustic Velocity（AV）、Pilodyn and near infrared spectroscopy（NIRs), respectively. The MOE, basic density and resin traits for each slash pine standing trees of the large breeding population were measured and evaluated by the NDE models. Then study on combined selection for wood properties and resin traits will be done, which would afford the basis of breeding strategy for the the selection for wood properties and resin traits.