Effect of Plant Growth Retardants on Plant Growth and Flower Yield on Pinched Seedling Plants of African Marigold (Tagetes erecta L.) cv Pusa Narangi Gainda

摘要

The present experiment was conducted to determine the effect of different doses of plant growth retardants viz.; CCC, Ethephon and MH on growth and flower yield of African marigold (Tagetes erecta L.) during the rabi season 2014. Ten treatments were included in the trial with randomized block design. The results reveal that CCC, Ethephon and MH treatments had significant response on growth, floral and yield characters. The different concentrations of CCC i.e. 1000 ppm, 1100 ppm and 1200 were produceminimum plant height (49.24 cm), first day to bud appearance (43.35 day) and maximum in number of branches per plant (17.86), number of leaves per plant (679.45), stalk length of flower (8.74 cm), flower diameter (6.77 cm), number of flowers per plant (38.53), weight of flowers (12.39 g) and flower yield per hectare (24.38 J ha). The treatment T3 with CCC (1100 ppm) was the best treatment for good vegetative as well as reproductive growth.