alexa Abstract | Application of Nitrogen, Tryptophan and Their Relation on Growth, Yield and Some Chemical Constituents in Green Onion

Journal of Chemical and Pharmaceutical Research
Open Access

OMICS International organises 3000+ Global Conferenceseries Events every year across USA, Europe & Asia with support from 1000 more scientific Societies and Publishes 700+ Open Access Journals which contains over 50000 eminent personalities, reputed scientists as editorial board members.

Open Access Journals gaining more Readers and Citations

700 Journals and 15,000,000 Readers Each Journal is getting 25,000+ Readers

This Readership is 10 times more when compared to other Subscription Journals (Source: Google Analytics)

Original Articles Open Access


Field experiments were carried out at the experimental Station of National Research Center Nubaria region, Behira Government, Egypt, to investigate the effect of different levels of nitrogen fertilizer, tryptophan and their interaction on the growth, productivity and some chemical constituents of green onion plant (Allium cepa L. cv. Giza 6)at 48 and 63 days after sowing (stage A and B respectively). Obtained results indicated that both nitrogen and tryptophan application significantly promoted the growth criteria of green onion: shoot length, white part length, bulb diameter, number of leaves, fresh and dry weight of onion plant at two vegetative stages. The increase in growth criteria was concomitant with increases in photosynthetic pigments, oil percentage, absorbed nitrogen, total nitrogen, total protein, total free amino acids and indoles content. Also, the results cleared decrease in the total soluble salts (TSS). It was noted that 30kgfed-1nitrogen and 50 mg/L tryptophan caused the highest increases in all examined growth parameters of onion plants at both growth stages. It means that tryptophan amino acid application reduced recommended nitrogen dose at rate 75% and consequently reduced nitrogen accumulation and cost.

To read the full article Peer-reviewed Article PDF image

Author(s): Abd Elwahed M S A El Awadi M E Dina M Salama and Haggag Wafaa M


Tryptophan, Nitrogen, Green onion, growth, amino acids, Tryptophan

Peer Reviewed Journals
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2017-18
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us