IFEVA   02662
INSTITUTO DE INVESTIGACIONES FISIOLOGICAS Y ECOLOGICAS VINCULADAS A LA AGRICULTURA
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Effects of environmental conditions during grain filling on seed dormancy of Quinoa (Chenopodium quinoa willd.), association with pre-harvest sprouting susceptibility
Autor/es:
DIANA CECCATO; DANIEL BERTERO; DIEGO BATLLA
Lugar:
Mendoza, Argentina
Reunión:
Congreso; XI International Symposium on Pre-harvest Sprouting in Cereals; 2007
Institución organizadora:
International Seed Science Society
Resumen:
The aim of this work is to study the changes in the level of dormancy in seeds of two cultivars of C. quinoa, 2-Want and Chadmo, and how this pattern of exit from dormancy can be altered by the environmental conditions experienced during grain development. Crops were established at several sown dates, then germination trials of seeds harvested were made at three incubation temperatures and whith manipulation. Dormancy was present at harvest time and was expressed differently in these cultivars as for temperature range. Late sown dates bring in early exit from dormancy. Partial remotion of seed coats drastically reduced dormancy in both genotypes, suggesting therefore that dormancy present at harvest in both cultivars results from a coat-imposed effect.