F. Pandini et al., PLANT HEIGHT REDUCTION IN POPULATIONS OF TRITICALE (X-TRITICOSECALE WITTMACK) BY INDUCED MUTATIONS AND ARTIFICIAL CROSSES, Brazilian journal of genetics, 20(3), 1997, pp. 483-488
Induced mutations by gamma radiation (0, 5, 10, 20 and 40 kR doses) an
d reciprocal crosses were tested as mechanisms of enhancing genetic va
riability for plant height in two triticale cultivars, BR4 and EMBRAPA
18. The reciprocal crosses and all doses of radiation showed similar I
ncrease in genetic amplitude for this trait, being suitable for increa
sing variability in breeding programs. Genotypes showed different resp
onses as the gamma ray doses were increased, expressing shorter plant
height. The decision of using induced mutations or artificial crosses
depends on the resources available and the selection method to be used
.