CORRELATION BETWEEN GRAIN PRODUCTION AND QUALITTY OF BREAD WHEAT WITH FLAG LEAF TRAITS UNDER WATER STRESS AND KINETIN

H. Mohamed, Hanaa

	CORRELATION BETWEEN GRAIN PRODUCTION AND QUALITTY OF BREAD WHEAT WITH FLAG LEAF TRAITS UNDER WATER STRESS AND KINETIN
The Iraqi Journal of Agricultural Science
Article 1, Volume 44, Issue 2, 2013, Pages 206-219
Author
Hanaa H. Mohamed
Abstract
The present study was conducted in the farm of the Faculty of science department at Basic Education college, Al-Mostansuria University during the winter seasons of 2010/2011 and 2011/2012. That was to investigate the effect of skipping irrigation and kinetin application at different growth stages on som growth treats of flag leaf and grain yield of bread wheat (Triticum aestivum L.), the experiment was laid in arandomized complete block design in a spilt-plot arrangement with three replicates. Irrigation treatments (irrigation at two week, (control), skipping irrigation at tillering, elongation, booting, booting to 100% flowering, tillering+booting and tillering+elongation+booting stages) were assigned the main-plots, while application time (tillering, elongation and boating stages) was arranged in the sub-plots. As an average for the two seasons grian yield, flag leaf area, flag leaf duration 71.52, 58.58, 43.67% and its content of chlorophylls a , b, total chlorophyll, carotenes 45.37, 56.68, 57.14, 80.00 also carbohydrate percentage and N,P,K elements were significantly reduced of about 38.94, 21.83,61.29,64.46% respectively when skipping irrigation was conducted at tillering+elongation+booting stages compared with control treatment, whill less reduction in the most studied traits were found at anther skipping irrigation treatments. Kinetin applied at booting stage improved the most studied traits, specially increased flag leaf area (32.55 and 29.80) cm2, green leaf duration (25.51 and 25.39) day, and its content of chlorophylls a (13.97 and 13.59) and b (7.42 and 7.00), total chlorophyll (18.14 and 17.78), carotenes (1.34 and 1.07) mg/l, carbohydrate percentage (15.66 and 13.50)% and N (2.46 and 2.75), P (0.30 and 0.21), K (2.95 and 2.73)% elements which reflect on grain yield at both season respectively. There are positive-correlation between grain yield ton/ha. and flag leaf area (0.95), flag leaf duration(0.90) , content of chlorophylls a, b, total chlorophyll and carotenes (0.87,0.89,0.94,0.90), carbohydrate percentage (0.89), N (0.94), P (0.96) and K (0.92) as rate for seasonals search respectively.
Keywords
Chlorophyll; carotene; grain yield; Triticum aestivum L; Water stress

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