info:eu-repo/semantics/article
Seed mass and germination in Asteraceae species of Argentina
Fecha
2009-07Registro en:
Galindez, Guadalupe; Ortega Baes, Francisco Pablo; Daws, M. I.; Sühring, Silvia Susana; Scopel, Ana Leonor; et al.; Seed mass and germination in Asteraceae species of Argentina; International Seed Testing Association; Seed Science And Technology; 37; 3; 7-2009; 786-790
0251-0952
CONICET Digital
CONICET
Autor
Galindez, Guadalupe
Ortega Baes, Francisco Pablo
Daws, M. I.
Sühring, Silvia Susana
Scopel, Ana Leonor
H.W. Pritchard
Resumen
The effects of seed mass variation on germination percentage, mean time to germinate and light requirements for germination in seven Asteraceae species of Argentina were studied. Germination, mean time to germinate and light requirements were significantly different among species at both 20°C and 25/10°C temperature regimes. In general, larger (> 1.0 mg) and intermediate-mass seeds (≥ 0.1 ≤ 1.0 mg) species showed higher germination, lower mean time to germinate and less light requirement than smaller-mass seeds (< 0.1 mg). However, these responses can vary with the species and temperature regime under which germination is tested. These results could help to explain the field observations for variation in seedling establishment between species and populations studied.