Title: Combining Drought and Aluminum Toxicity Tolerance To Improve SorghumProductivity
Abstract: Moisture stress and aluminium toxicity in sorghum production can be
overcome by breeding for tolerance. This study was set up to determine
the response of sorghum (Sorghum bicolor L.) genotypes to post-
anthesis drought and aluminium toxicity. Sorghum inbred P1 with stay
green drought tolerance was crossed with P2, a standard aluminium
tolerant cultivar. The parents, the first filial plants (F1) and KM-4
were tested for drought and aluminium toxicity tolerance in the field
and solution culture with 0 and μMol 148 Al3+ respectively. The
drought experiment was laid in RCBD with three replicates and split
-plot arrangement. Randomly selected plots were denied irrigation from
six weeks after emergence. There were significant (P < 0.05)
differences between treatments and accessions. Panicle weight of F1 was
outstanding and significantly different from the rest both with and
without water. F1 out performed P1, P2 and KM-4 by 95.61, 146.37 and
328.81% without water; and by 155.44, 124. 27 and 82.02% with water,
respectively. There were significant (P < 0.05) differences in the
sorghum accessions with P2, KM-4 and F1 being tolerant. These results
indicate that multiple stress tolerance can increase sorghum
productivity.
Publication Year: 2011
Publication Date: 2011-03-07
Language: en
Type: article
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