Physiological responses of seaweeds extracts, benzyl adenine and paclobutrazol of wheat (Triticum aestivum L. Cultivar Misr 1) plants.

This study was carried out during season of 2014/2015 at Botanical garden, Botany and Microbiology Dept., Fac. of sci., Al-Azhar Univ., Nasr City, Cairo to investigate the effect of certain algal extracts at 2g/l and 4g/l (Sargassum latifolium, Ulva rigida and Corallina elongate), Benzyladenine at 200 ppm and Paclobutrazol at 50 ppm on growth and metabolism of wheat plants. Increases in shoot length, root length and fresh and dry weights of both shoots and roots in response to all treatments. Data showed, general improvement in all yield parameters as result of algae extracts, BA and significant increases in yield of wheat plants in case of foliar treatment with pac. 50 ppm. The highest value of weight of 100 seeds is 227% and No. of seeds/plant is 136% in treated plants with Pacl. (50 ppm) as compared to control Photosynthetic pigments (chl. a, chl. b and chl. a+b) and carotenoids generally, decreased in response to all Ulva doses, Sarg. and BA 200 ppm. However, treated plants with Corallina increased pigment contents of wheat plants. With respect to Pacl. 50 ppm, chlorophylls and carotenoids significantly increased at stage 2 and decreased at stage 1.Carbohydrate contents of shoots decreased at stage 1 and increased at second stage of growth in response to all applied substances however, protein contents appeared approximate decreases in shoots of wheat plants as a result of both sea weeds, BA 200 ppm and Pacl. 50 ppm0 . Hydrolytic enzymes decreased at stage 1 and increased at the second stage of growth. Carbohydrates and phenols contents of yielded seeds of wheat plants decreased significantly in response to all applied substances in contrast, proteins in most cases increased in response to all used treatments. - See more at: