![]() ![]() Most forest species need a long period to germinate and, therefore, there is a need to develop quick and efficient tests to evaluate seed quality (Piña-Rodrigues and Santos, 1988). Therefore, higher seed reserves increase the probability of successful seedling establishment (Haig and Westoby, 1991 Khan, 2004). The nutrient reserves of seeds influence germination, growth and seedling survival (Khan and Shankar, 2001), resulting in a higher seedling competiveness of heavy seeds (Upadhaya et al., 2007 Santos et al., 2009). Heavy seeds present greater germination capacity because they are well formed and less damaged (Socolowski and Cicero, 2008). The demand for seeds and seedlings of native species has encouraged research in these areas (Santos and Aguiar, 2000), resulting in the availability of good quality seed for environmental recovery projects (Bonner, 1992). In the last few years, interest in the propagation of native forest species has increased due to the present emphasis on environmental issues (Araújo Neto et al., 2003). Keywords: Brazilian Savannah, seed processing, internal morphology, forestry seed. The X-ray test can efficiently evaluate seed quality but does not permit a visualization of the embryos. The elimination of badly formed and insect- infested seeds improved the physiological potential of the seed lot. aromatica were influenced by seed weight. The internal seed morphology and seedling emergence of X. A further seed portion from the categories (separated by blower and in water) was also placed in 500 mg L ≡ of a solution to overcome dormancy and was later sown in soil taken from the ∼errado. The seeds from each weight category were weighed and X-rayed. ![]() Another seed portion was separated in water by their density, into those that sank and those that floated. Seeds were collected from dehiscent follicles with a blower and one portion was separated into weight categories: very light seeds, light seeds and heavy seeds. seeds in accordance to their weight, through X-ray images and emergence test. The objective of this study was to evaluate the quality of Xylopia aromatica (Lam.) Mart. Seeds of some species of the Annonaceae require a long period to germinate and many studies have focused on determining methods which can rapidly analyze seed quality. (Annonaceae) is a native species of the Brazilian Savannah (∼errado) region, recommended for the recovery of degraded areas and also for medicinal use. IUSP/ESALQ Programa de Pós-Gradução em Fitotecnia Seed weight of Xylopia aromatica (Annonaceae): quality evaluation from X-ray and seedling emergenceįábio Socolowski I Silvio Moure Cicero II Daniela Cristine Mascia Vieira III The X-ray test can efficiently evaluate seed quality but does not permit a visualization of the embryos.īrazilian Savannah seed processing internal morphology forestry seed The internal seed morphology andseedling emergence of X. A further seed portion from the categories (separated by blower and in water) was also placed in 500 mg L-1 of a solution to overcome dormancy and was later sown in soil taken from the “Cerrado”. (Annonaceae) is a native species of the Brazilian Savannah (“Cerrado”) region, recommended for the recovery of degraded areas and also for medicinal use. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |