ICRISAT Archival Report 2006 - The seedlings of success in the ...

Milestone 5A.6.1.1: Six new dual-purpose foliar disease resistant forage/sweet sorghum hybrid parents developed
(BVSR, 2009)
High-yielding designated hybrid parents with sweet stalk, and varieties and hybrids developed by crossing
promising sweet sorghum A- and R-lines were evaluated in replicated trials during the 2005 postrainy season.
Results of these trials are given below.
Sweet sorghum B-line trial: Based on the performance of sweet sorghum B-lines evaluated during the 2005 rainy
season, a total of 30 B-lines were selected and evaluated along with the checks NSSH 104 and SSV 84 in the 2005
postrainy season. ICSB 73 with 0.9 t ha -1 sugar yield performed significantly better than the best check NSSH 104
(0.74 t ha -1 ) for sugar yield based on Brix reading and juice yield, while ICSB 324 (0.7 t ha -1 ), ICSB 652 & 401 (0.6
t ha -1 ) and ICSB 24001 (0.5 t ha -1 ) were significantly better than SSV 84 (0.3 t ha -1 ). The performance of the lines
for other traits is presented in Table 1.
Sweet sorghum advanced B-line trial (SSABLT, 2006K): Based on the performance of B-lines in sweet sorghum
B-line trial in 2004 postrainy season, 2005 rainy and postrainy seasons, PPV (Protection of Plant Varieties) trials in
2004 rainy and postrainy seasons, PPV trials in 2005 rainy and postrainy seasons, 75 B-lines were selected and
evaluated during the 2006 rainy season along with the checks 296B and SSV 84. Three B-lines, ICSB 729 (3.3 t ha -
1 ), ICSB 722 (3.1 t ha -1 ), ICSB 321 (3.0 t ha -1 ) were on par with the check SSV 84 (2.7 t ha -1 ) for sugar yield.
Among these, ICSB 722 (14 t ha -1 ) was significantly better than the check 296 B (10.9 t ha -1 ) for grain yield, while
the rest of them were on par with 296 B, except ICSB 321. The performance of these lines for other traits is given in
Table 2.
Table 1. Performance of selected sweet sorghum B-lines (at maturity stage) - 2005 postrainy season
at ICRISAT, Patancheru
B-line
Days to
50%
flowering
Plant
height
(m)
Cane
yield
(t ha -1 )
Juice
yield
(t ha -1 )
Brix
reading at
maturity
Sugar yield based on
Brix reading and juice
yield (t ha -1 )
ICSB 73 75 1.5 13.8 5.7 16.7 0.9
ICSB 324 75 1.5 12.0 3.7 19.0 0.7
ICSB 652 75 1.3 11.1 3.3 16.7 0.6
ICSB 401 75 1.4 12.9 4.2 13.0 0.6
ICSB 24001 75 1.5 13.2 4.4 11.7 0.5
NSSH 104 (Check) 73 1.5 13.3 5.3 13.3 0.7
SSV 84 (Check) 70 1.4 9.0 2.7 16.3 0.4
Mean 75 1.2 6.9 2.1 12.0 0.3
CV (%) 3.9 15.0 21.9 22.3 22.4 29.4
CD (5%) 3.96 0.30 2.5 0.74 4.36 0.13
Table 2. Performance of selected sweet sorghum B-lines (at maturity stage) - 2006 rainy season at
ICRISAT, Patancheru
Sugar yield based
Days to
50% Plant
Cane
yield
Juice
(t yield
on Brix reading
Brix reading and juice yield
Grain
yield
B-line
flowering height (m) ha -1 ) (t ha -1 ) at maturity (t ha -1 ) (t ha -1 )
ICSB 729 77 2.2 49.5 23.4 14.7 3.3 10.9
ICSB 722 75 2.2 41.5 20.5 15.2 3.1 14.0
ICSB 321 78 2.3 40.6 18.0 17.5 3.0 7.9
SSV 84 (Check) 82 2.9 45.7 18.6 18.2 3.3 3.0
296 B (Check) 69 1.5 12.1 2.7 8.3 0.5 10.9
Mean 67 1.6 21.5 9.2 12.9 1.2 11.4
CV (%) 1.69 8.20 12.5 21.11 9.33 30.3 11.84
CD (5%) 1.82 0.22 4.36 3.13 1.94 0.41 2.17
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