复杂的农业景观系统中植物物种多样性的评价方法-PLEC农业生物多样性指导小组（PLEC-BAG）对资料搜集与分析的指南

农业生物多样性已成为国际关注的热点领域之一。本文根据郭辉军等中国专家提出的农业生物多样性评价（Agobiodiyersity Assessment，ABA）方法为基础，提出了景观水平农业生物多样性评价相关术语、基本用词的定义，一系列用于搜集PLEC植物物种多样性核心资料的基本原理与实用指南，以及资料分析与报告指南，以指导全球环境基金/联合国环境署/联合国大学PLEC项目计划20多个国家的研究。图表可于实地调查时用于搜集及分析核心资料；这些资料最终将会包括于PLEC物种多样性数据库。正文则提供辅助的咨询解释。

Progress and Prospects of Research and Utilization on Genetic Diversity of Rice Germplasm Resources in Guizhou

Rice germplasm resources in Guizhou are rich in genetic diversity with relatively large variation of biological characters and various types by the natural evolution and artificial selection. Being identified and sorted systematically and comprehensively with the multi - disciplinary sciences, 5168 traditional varieties collected from 79 counties of Guizhou, accounting for about 10 of the total in China were reproduced and sent to the National Bank of Crops Germplasm Resources at CAAS for long - term con-servation. There were some of elite types including semi - dwarf, more grains per panicle, weight grain, good quality, cold and drought tolerance, resistance to diseases and pests as well. Other special elite characterized by restoring to CMS, wide compatibil-ity, and poly - embryonic seedlings were also screened. Working and administering system on rice genetic diversity by establish-ing databank for base and core collection was formed to utilize widely in rice breeding. It will be helpful to direct germplasm en-hancement and gene-pool enrichment with development of molecular biotechnology in application.