SELECTION CRITERIAS DEVELOPMENT FOR CHILI PEPPER UNDER DIFFERENT FIELD WATER CAPACITY AT VEGETATIVE STAGE

Parjanto, Rosmaina, Ahmad Yunus, Sobir

Abstract: Low of water availability is a major limits the growth and production of horticulture crops including chili pepper (Capsicum annuum L.). The study was aimed to determine the water deficit critical level that resulted 50% decreasing of the yield, and to determine the selection criteria of chili pepper under water deficit in the vegetative phase, as well. The research arranged under completely randomized design of two factorials, which first factor was four levels regarding to water field capacity of 100%, 75%, 50% and 25%, while second factor was five genotypes of chili pepper. The result of this study revealed that water deficit at the vegetative stage was affected to growth and production of chili pepper that indicated by severe decreasing of the yield (71%), number of fruit per plant (69.25%) and fruit set (68.89%). Regression analysis based on yield, number of fruit per plant and fruit set showed that average water deficit critical level of 50% decreasing of the yield was 52.39% of field water capacity. Correlation analysis revealed that different characters that associated with the yield under different field water capacity level. Path coefficient analysis revealed that character of number of flowers abortion (3.05), flowers set (0.06), fruit weight (0.29) and number of fruit (1.23) have direct effect with fruit weight per plant in 100% of fi eld water capacity, character of number of fruit per plant (0.68), fruit weight (1.43), percentage of flower abortion (0.36), and root length (0.21) have direct effect with fruit weight per plant in 50% of water field capacity viz., whereas in 25% of field water capacity, only character of number of fruit (0.78) has direct effect with fruit weight per plant. High of water deficit tend to decrease the number of character correlated and direct effect with yield.

Keywords: Capsicum annuum L.; correlation and path analysis; water defi cit critical level

Date published: 2018-03-07