Line × tester analysis across environments for stalk sugar yield traits in sweet sorghum [sorghum bicolor (l.) moench]
Loading...
Date
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
UASD
Abstract
Sweet sorghum which is similar to grain sorghum but with sugar rich stalks, is a new generation
bioenergy crop, gaining importance as a raw material for ethanol production, and having multiple uses.
The present investigation was carried out to study heterosis and combining ability for stalk sugar yield
traits in the B and R lines. A total of 49 crosses derived by using 14 parental lines in a Line x Tester (7 x
7) mating design were evaluated at two locations viz., RARS, Bijapur and ICRISAT, Patancheru during
kharif (rainy season) 2013 for stalk sugar yield traits, grain yield and yield components. The female
parents (lines) used were IS 13871, IS 22670, ICSV 25333, ICSV 93046, NTJ 2, Wray and SPSSV 30,
and the male parents (testers) used were PMS 90B, ICSB 323, ICSB 351, ICSB 374, ICSB 480, Parbhani
Moti and NSSV 13.
The parental lines, ICSV 25333, ICSV 93046 and NTJ 2 (among lines), and Parbhani Moti, PMS
90B and NSSV 13 (among testers) were found to be good combiners for stalk sugar yield and its related
traits, in terms of brix (%), total soluble solids, total sugar index etc. Among the crosses evaluated, eleven
promising cross combinations viz., IS 13871×NSSV 13, IS 22670×ICSB 351, IS 22670×ICSB 374, ICSV
25333×PMS 90B, ICSV 25333×ICSB 351, ICSV 25333×ICSB 480, ICSV 93046×PMS 90B, ICSV
93046×ICSB 323, NTJ 2×Parbhani Moti, Wray×NSSV13 and SPSSV 30×ICSB 480 were identified based
on significant sca effects and significant estimates of heterosis over mid parent, better parent and
standard heterosis in desired direction for various stalk sugar yield related traits, and grain yield and yield
components. The good combining parents and crosses identified in the present study can be exploited in
breeding for high sugar yielding hybrids in sweet sorghum.
Description
Keywords
null