Research Article, J Plant Physiol Pathol Vol: 4 Issue: 2
Heterosis and Inbreeding Depression in Tropical Sweet Sorghum (Sorghum bicolor (L.) Moench)
| Sudhir Kumar I1*, Srinivasa Rao P2, Belum VS Reddy2,Ravindrababu V3 and Reddy KHP3 | |
| 1Department of Plant Breeding, Acharya N. G. Ranga Agricultural University, Agricultural Research Station, Peddapuram-533 437, Andhra Pradesh, India | |
| 2International Crops Research Institute for the Semi-Arid Tropics, Patancheru,Hyderabad-502 324, Andhra Pradesh, India | |
| 3Acharya N. G. Ranga Agricultural University, Agricultural College, Tirupati-517502, Andhra Pradesh, India | |
| Corresponding author : I. Sudhir Kumar Scientist, Plant Breeding, Agricultural Research Station, Acharya N. G. Ranga Agricultural University, Peddapuram -533 437, East Godavari District, Andhra Pradesh, India Tel: +91-9959792568 E-mail: injetisudhirkumar@gmail.com |
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| Received: January 06, 2016 Accepted: March 22, 2016 Published: March 29,2016 | |
| Citation: Kumar S, Rao S, Reddy BVS, Ravindrababu V, Reddy KHP (2016) Heterosis and Inbreeding Depression in Tropical Sweet Sorghum (Sorghum bicolor (L.) Moench). J Plant Physiol Pathol 4:2.. doi:10.4172/2329-955X.1000147 |
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.
