Research Article 
Determination of Morphological Characteristics Affected by Different Agronomical Treatments in Rice (IR6874-3-2 Promising Line)
D. Barari Tari, H. Pirdashti, M. Nasiri, A. Gazanchian and S.S. Hoseini
Asian Journal of Plant Sciences, 2007, 6(1), 61-65.
Abstract
In order to study the effects of transplanting date, planting spaces and nitrogen fertilization on morphological characteristics of rice promising line a field experiment was carried out in the Rice Research Institute of Iran (Amol). Experimental design was arranged in a split plot factorial in basis of completely randomized block design with three replications. Some agronomical traits such as panicle length, grain number per panicle, filled grains percentage, 1000 grains weight, fertile tiller numbers, flag leaf area, flag leaf angle, grain yield and harvest index were measured. Results showed that the effect of transplanting date on grain number per panicle was significant at 0.01 probability level. Also the effect of planting spaces on grain number per panicle and fertile tiller was significant at 0.05 and 0.01 probability level, respectively. Nitrogen fertilizer levels had significant effect on, flag leaf area, flag leaf angle, panicle length, 1000 grains weight and grain yield. According to results, 1000 grains weight, harvest index and filled grains percentage had the most correlation with grain yield, respectively. For this line, transplanting date at May 12, planting space at 20x20 cm and 115 kg N ha-1 for the best performance of yield attributes were recommended.
ASCI-ID: 7-1051
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