Study on chlorophyll formation process in three wheat cultivars leaves at different nitrogen levels in Ahvaz climate conditions
2012
Sayyahi, N., Former Student Faculty of Agriculture Shahid Chamran University of Ahvaz, Iran | Nabipour, M., Assistant Professor Faculty of Agriculture Shahid Chamran University of Ahvaz , Iran | Mamghani, R., Associate Professor Faculty of Agriculture Shahid Chamran University of Ahvaz , Iran | Meskarbashee, M., Assistant Professor Faculty of Agriculture Shahid Chamran University of Ahvaz , Iran
In order to estimate chlorophyll production in three wheat cultivars (Triticum aestivum L.) leaves (star, chamran and fong) by spad chlorophyll meter, an experiment carried out in agriculture farm of Shahid Chamran University in 2005. The experiment designed under factorial with a completely randomized block design with three replications, five levels of nitrogen (0, 25, 50, 75 and 100 Percent) equal 33.75, 67.5, 101.25 and135 kg/ha nitrogen were applied as basal dressing. A part of field was chosen as a reference plot that delivered all of nitrogen to produce five ton/ha grain wheat. The results showed that chlorophyll concentration in star cultivar (40.2 , 42.5 and 39) was higher and in fong cultivar (37.8, 38 and 35) was lower than another two cultivars 60 ¡90 and 120 days after planting respectively. N1 and N5 were the lowest and the most but in cultivars star and fong were the most and the lowest respectively. N1 was (29 ¡ 25.8 and 24.1) and N5 was (38.7, 37.7 and 36.3) in star, chamran and fong respectively. So the highest readings related to star cultivar. Therefore there was a high correlation between chlorophyll concentration and nitrogen accumulation in leaves. This relationship helps to use the chlorophyll concentration in leaves and find the content of nitrogen fertilizer requirement and determine the amount of nitrogen fertilizer to apply as top-dress.
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