Indian Journal of Plant Genetic Resources

Large collections of genetic resources held in Gene Banks poses a challenge for the maintenance of both the accessions as well as the information documented for the germplasm characterized. The accessibility and knowledge of the landrace collections are the prerequisite for an efficient utilization of the genetic resources. Different sample sizes and sampling strategies, either random or non random, were proposed to obtain core sets in brinjal from entire collection of 622 landraces. The proposed strategy emphasizes on relatively smaller number (5) of highly variable descriptors for computing inertia score through Principal Component Score Strategy (PCSS) and thereby capturing maximum genetic diversity in the core set. This strategy is compared with three other strategies i.e. Random, Stratified and Principal Component Score Strategy based on the entire set (13) of quantitative descriptors. This strategy will help in developing core set with limited resources or when information on some descriptors is not available.