Heterotic studies for various characters in sunflower (Helianthus annuus L.)
2003
Khan, M.S. | Swati, M.S. | Khalil, I.H. (NWFP Agricultural Univ., Peshawar (Pakistan). Dept. of Plant Breeding and Genetics) | Iqbal, A.
An experiment consisting of nine hybrids and their ten parents (inbred lines) was conducted at Agricultural Research Institute, Tarnab, Peshawar, during August 2001, using Randomized complete block design with three replications. Data were recorded on yield and other important characters. Data were analyzed using M-Stat-C and the means were separated through least significant difference test. Significant genetic differences were observed among inbred lines for number of leaves per plant, plant height, head diameter, number of seeds per head, number of filled and unfilled seeds per head and percent oil content. Genetic differences among the hybrids were significant for all characters. TS-17 x TR-120 showed maximum heterosis for the number of leaves per plant, number of seeds per head and seed yield ha-1. TS-4 x TR-11 showed maximum heterosis for plant height, head diameter and percent oil content. Mean data for percent oil content was higher for TS-17 x TR-120, TS-18 x TR-120 and TS-4 x TR-11 than all other hybrids. Based on the mean performance and heterotic effects for important characters, these three hybrids are suggested for further study and use in the breeding programmes.
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