Akademik Veri Yönetim Sistemi
JOURNAL OF AGRICULTURAL SCIENCES-TARIM BILIMLERI DERGISI, cilt.25, sa.1, ss.79-85, 2019 (SCI-Expanded)
The investigation was made to estimate heritability and genetic advance and thus understand the genetic behavior of indehiscent capsule character in sesame with the field experiments during three consecutive years. Muganli-57 (female) parent with dehiscent capsule was crossed with ACS 344 (male), an introduction material, which had indehiscent capsule character. The results in the F-1 generation indicated that dehiscent capsule character was dominant over indehiscent capsule. In F-2, 3:1 segregation ratio was monitored and further confirmed in F-3 showing indehiscent capsule character was controlled by a single recessive gene. Heritability was estimated by parent-offspring regression and the data were collected in F-1, F-2 and F-3 generations derived from the cross between dehiscent and indehiscent capsule types. Heritability estimates in narrow sense for number of branches, number of capsules per plant, 1000 seed weight and seed yield were low in indehiscent capsule types of F-2. Genetic advance had also low values except for number of branches (30.79%). Whilst low values obtained for indehiscent capsule, dehiscent capsule types in F-2 indicated high heritability for the characters studied (70.52-92.84%). Stem height to the first capsule and plant height were of high heritabilities in both capsule types of F-2 and F-3. Although indehiscent capsule types had low means and heritabilities due to pleiotropic effects, mutant cross had heterotic effect on dehiscent types for all the characters. This positive shift could be explained by additive gene effect and this information presented in this investigation was therefore highly beneficial for the genetic improvement of sesame and reaching to high yielding types. This research also provides an example that bad parent may have a good progeny.