Soleymani, A. and Almodares, A. and Shahrajabian, M. H.
(2012)
Changes in seed yield and yield components of two cultivars of sweet sorghum in different plant populations.
International Journal of Agriculture and Crop Sciences, 4 (4).
pp. 175-178.
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Abstract
Sweet sorghum belongs to the same species as grain sorghum. Sweet sorghum has a
potential source to use as multi purpose industrial crop. In order to evaluate changes in seed yield and yield
components of two cultivars of sweet sorghum in different plant populations, two sweet sorghum cultivars
(Rio and Keller) and six plant densities (100000, 200000, 300000, 400000, 500000 and 600000 plants per
ha), were evaluated in a split plot layout within a randomized complete block design with three replications
at the Isfahan University Research Station, Isfahan, Iran in 2009. Plant density had significant effect on
panicle length, the number of panicle per m2, the number of seed per panicle, seed yield and biological
yield. Pancile length, the number of seed per panicle, seed yield, biological yield and harvest index was
significantly affected by cultivar. Sorghum cultivars did not differ significantly between themselves in yield
attributing characters viz., the number of panicle per m2 and one hundred seed weight. Sweet sorghum has
the highest dry matter accumulation rate when considered on a day basis. On the basis of the results,
600000 plants per ha, had obtained the highest seed yield, biological yield and appropriate one hundred
seed weight. So, cultivation of Rio with 600000 plants per ha, was recommended for this semi arid region.
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