Comparative performances of the normal and late sown sunflowers under British conditions

Hussain, T.; Pooni, H.S. . School of Biological Sciences

Comparative performances of the normal and late sown sunflowers under British conditions

1997

Hussain, T. | Pooni, H.S. (The University of Birmingham, Birmingham, England (United Kingdom). School of Biological Sciences)

Successful cultivation of the sunflower in UK (United Kingdom) depends heavily on the sowing of suitable varieties at an appropriate time. Data from 66 open pollinated half-sib families of sunflower were analysed to determine the impact of the normal and late sowing dates on the expression of six metrical traits. Comparisons of the means revealed that the late sowing grew significantly faster and taller and took 7 days less to mature. The normal sowing, on the other hand, set significantly more seed. The two sowing dates did not differ critically for the remaining traits. The performance of the families was observed to be consistent across the sowing dates and there was little coincidence of family x sowing date interaction or family x micro environmental interaction for any of the traits. These observations were further supported by the significant and positive correlations between the sowings while the associations between traits did not differ much either. Only one out of the 15 inter-trait correlations was found to differ significantly

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