Lettuce (Lactuca sativa L. ) seed quality evaluation using seed physical attributes, saturated salt accelerated aging and the seed vigour imaging system
Electron. j. biotechnol
;
8(3)Dec. 2005. ilus
Artículo
en Inglés
| LILACS
| ID: lil-448796
ABSTRACT
High seed quality is essential for optimum stand establishment in lettuce. As a result, it is necessary to have seed vigour tests that permit rapid, objective and accurate evaluation of seed quality. This study evaluated physical and physiological seed quality components of four seed lots of six lettuce varieties obtained from a commercial company. Seeds were evaluated for seedling emergence under greenhouse conditions, standard germination, seed physical aspects, the Saturated Salt Accelerated Aging (SSAA) test and the Seed Vigour Imaging System (SVIS). Results indicated that large-seeded lettuce varieties had higher percentage germination, higher SSAA values, higher SVIS index and more rapid and uniform greenhouse emergence. Black-seeded lettuce varieties possessed higher seed quality and less fungal invasion when evaluated by the SSAA test. The SVIS index significantly correlated with SSAA values and seedling emergence under greenhouse conditions suggesting it can be used as a measure of seed vigour. It is concluded that the SSAA and SVIS tests are practical and accurate determinants of lettuce seed quality and distinguish between high and poor quality lettuce seed lots.
Texto completo:
Disponible
Índice:
LILACS (Américas)
Asunto principal:
Semillas
/
Lactuca
Idioma:
Inglés
Revista:
Electron. j. biotechnol
Asunto de la revista:
Biotecnologia
Año:
2005
Tipo del documento:
Artículo
País de afiliación:
Chile
/
Estados Unidos
Institución/País de afiliación:
Pontificia Universidad Católica de Valparaíso/CL
/
The Ohio State University/US
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