Genetic variability for yield and yield components of Thai chilli (Capsicum spp.) landraces under inorganic and organic agricultural systems

摘要

Yield components and genetic variation for high yield potential is an essential prerequisite for the development of chilli cultivars with improved production system. The objectives of this study were to evaluate yield and yield component and genotypic variability of chill germplasm. Each experiment was conducted in a Randomized complete block design (RCBD) with four replications of two production systems between December 2012 and June 2013. The results showed that in this germplasm, there were highly significant variability (p≤0.01) for fruit width, fruit length, number of fruits plant-1, fruit weights fruit-1 and fruit yields plant-1. The highest number of quality fruit was found on Chee genotype 519.42±14.27 and 512.69±12.35 fruits plant-1 under inorganic and organic agricultural systems, respectively. The lowest number of quality fruit was observed on Labmeunang genotype (27.63±6.10 and 19.89±5.78 fruits plant-1 under the inorganic agricultural system and organic agricultural system, respectively). Chee genotype produced the highest yield under the inorganic and organic agricultural system 701.22±18.58 and 630.61±16.35 g plant-1, respectively. Labmeunang genotype produced the lowest yield (26.45±10.05 g.plant-1) under the organic agricultural system. The results indicated that Chee genotype show potential for chilli production in both systems.