Heterosis and Inbreeding Depression in Tropical Sweet Sorghum (Sorghum bicolor (L.) Moench)
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Sudhir Kumar, Pinnamaneni Srinivasa Rao, Belum Venkata Subba Reddy, V. Ravindrababu, KHP Reddy. (29/3/2016). Heterosis and Inbreeding Depression in Tropical Sweet Sorghum (Sorghum bicolor (L. ) Moench). Crop Research, 51 (1), pp. 1-4.
Abstract
An investigation carried out during two seasons viz., rainy 2009
and rainy 2010 to study heterosis and inbreeding depression of
four crosses of sweet sorghum (Sorghum bicolor (L.) Moench)
and their F2 have revealed positive mid-parent and better parent
heterosis for majority of the characters. Sugar yield was found to be
most heterotic trait, as all the crosses depicted significant positive
heterosis over their mid parent and better parent values in case of
all the contributing characters indicating dominance gene action.
Further high inbreeding depression for sugar yield reflected high
heterosis during the two seasons for all the crosses suggesting the
operation of non-additive gene action
