%0 Journal Article
%T X-Ray analysis to assess mechanical damage in sweet corn seeds
%A Gomes Junior
%A Francisco Guilhien
%A Cicero
%A Silvio Moure
%J Revista Brasileira de Sementes
%D 2012
%I Associa??o Brasileira de Tecnologia de Sementes
%R 10.1590/S0101-31222012000100010
%X the x-ray test is a precise, fast and non-destructive method to detect mechanical damage in seeds. in the present study, the efficiency of x-ray analysis in identifying the extent of mechanical damage in sweet corn seeds and its relationship with germination and vigor was evaluated. hybrid 'swb 551' (sh2) seeds with round (r) and flat (f) shapes were classified as large (l), medium (m1, m2 and m3) and small (s), using sieves with round and oblong screens. after artificial exposure to different levels of damage (0, 1, 3, 5 and 7 impacts), seeds were x-rayed (15 kv, 5 min) and submitted to germination (25 ˇăc/5 days) and cold (10 ˇăc/7 days) tests. digital images of normal and abnormal seedlings and ungerminated seeds from germination and cold tests were jointly analyzed with the seed x-ray images. results showed that damage affecting the embryonic axis resulted in abnormal seedlings or dead seeds in the germination and cold tests. the x-ray analysis is efficient for identifying mechanical damage in sweet corn seeds, allowing damage severity to be associated with losses in germination and vigor.
%K zea mays l
%K image analysis
%K germination
%K vigor.
%U http://www.scielo.br/scielo.php?script=sci_abstract&pid=S0101-31222012000100010&lng=en&nrm=iso&tlng=en