EMERGENCE OF THE CROP AND PHYSIOLOGICAL QUALITY IN PEANUT

FERNÁNDEZ, ELENA; CAPIELLO, G; LEDESMA, CLAUDIA; LEDESMA, MARÍA MICAELA

La Falda

Congreso; XXI Annual Scientific Meeting; 2017

The non-uniform emergence of peanut (Arachis hypogaea) crop can generate differences in the moment of occurrence of the growth and development of the seeds. Considering the high degree of indeterminacy and the relatively long growing cycle of the available peanut genotypes, environmental conditions found in the producing region of Córdoba such as high and low temperature as well as water deficit at the end of the cycle, could differentially affect the physiological quality of their seeds. The objective of the study was to evaluate the influence of the emergence time of the mother plants on the physiological quality of their seeds. Two seed lots identified with the ElectricalConductivity Test (EC µS.cm-1.g-1) as high quality (AC: 28) and low quality (BC: 57) were seeded in the field (FAV-UNRC, 26/10/15). The emergency was registered every day (19-29 days after sowing). Yield, physical and physiological qualities were estimated at the time of harvest. No significant difference was found in the weight of the seeds coming from both lots. However, plants emerging from the highquality seeds showed higher emergence index (higher rate of emergency speed and emergency rate, and lower average time of emergency) and resulted in a higher proportion of large seeds, greater yields and better physiological quality, supporting the production of high-quality seeds.