CHOOSING RICE GERMPLASM FOR EVALUATION

被引:2
作者
VAUGHAN, DA
机构
关键词
ORYZA-SATIVA; RICE; GERMPLASM; GENETIC RESOURCES; CONSERVATION; RICE PESTS; RICE PATHOGENS; CORE COLLECTIONS; SEARCH STRATEGIES;
D O I
暂无
中图分类号
S3 [农学(农艺学)];
学科分类号
0901 ;
摘要
Using the evaluation database on the world collection of rice, Oryza sativa, conserved at the International Rice Research Institute, different sampling strategies for choosing germplasm were compared. Random, stratified, sequential and analysed sets of germplasm were chosen and the frequency of finding resistance to different rice pests, the brown planthopper, green leafhopper and whitebacked planthopper, and diseases, bacterial blight and blast were compared. The frequency of the geographically restricted javanica race of rice was also compared in the different germplasm sets. The results indicate that where no prior information is available to choose germplasm for evaluation, for the same sample number, germplasm representing broad genetic diversity are preferable to other sampling strategies.
引用
收藏
页码:147 / 154
页数:8
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