Surwenshi, A. and Chimmad, V.P. and Ravikumar, R.L. (2007) Comparative studies of hybrids and parents for physiological parameters and yield in sorghum (Sorghum bicolar)*. Karnataka Journal of Agricultural Sciences, 20 (1). pp. 25-28.
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Abstract
Field experiments were conducted during rabi seasons of 2000-01 and 2001-02 at Main Agricultural Research Station, University of Agricultural Sciences, Dharwad to study various physiological characters and their effect on yield in 16 hybrids along with their eight male and two female parents using randomized block design. The hybrids, 117A x DRR-1, 117A x DRR-2 and 117A x DRR-3 and the parents DRR-2, DRR-1 and DRR-3 recorded significantly higher total chlorophyll and also chlorophyll ‘a’ content, which resulted in higher yields. There existed positive and significant association of total chlorophyll content in leaf and grain yield (0.977 and 0.944) at 50 per cent flowering and dough stages, respectively. The photosynthetic rate, stomatal resistance, RWC and epicuticular wax content on leaf surface was significantly higher in hybrids, 117A x DRR-1, 117A x DRR-2 and 117A x DRR-3 and also in the parents DRR-2, DRR-1 and DRR-3 at both the stages. Further, the hybrids (117A x DRR-2, 177A x DRR-1; 117A x DRR-3; 117A x DRR-5; 401A x DRR-3 and 401A x DRR-5) also maintained lower transpiration rate as they have one of the parents, which had lower transpiration rate and these hybrids also recorded higher yields. Similarly, the relative water content and epicuticular wax also showed a significant positive association with grain yield at 50 per cent flowering (0.963 and 0.867, respectively) and at dough stage (0.918 and 0.778, respectively). More over these parents transferred their beneficial character to the hybrids, which were developed by using these parents
| Item Type: | Article |
|---|---|
| Author Affiliation: | Department of Crop Physiology, University of Agricultural Sciences, Dharwad - 580 005, Karnataka, India |
| Subjects: | Plant Physiology and Biochemistry > Plant Physiology |
| Divisions: | Sorghum |
| Depositing User: | David T |
| Date Deposited: | 02 Dec 2010 16:37 |
| Last Modified: | 29 Dec 2010 20:07 |
| Official URL: | http://203.129.218.157/ojs/index.php/kjas/article/... |
| URI: | http://eprints.icrisat.ac.in/id/eprint/853 |
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