Assess Correlation between Traits of Sorghum Affected Different Rate of Nitrogen Fertilizer and Vermicompost under Water Stress Situation
الموضوعات :Seyedeh Zohreh Hashemi 1 , Saeed Zakernejad 2 , Khoshnaz Payandeh 3
1 - Msc. Graduated, Department of Agronomy, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran.
2 - Assistant Professor, Department of Agronomy, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran.
3 - Assistant Professor, Department of Soil Science, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran.
الکلمات المفتاحية: harvest index, leaf area, Seed weight</i>, Relation between traits, <i>Biomass,
ملخص المقالة :
BACKGROUND: Yield in Sorghum, similar to the other crops, is a complex trait and constitute by many of morphological and physiological traits. Mentioned trait is affected by genotype and environmental factors because it is a quantitative trait.OBJECTIVES: This study was conducted to predict the most effective traits on sorghum seed yield according correlation between characteristics in response to apply different irrigation regime and nutrition crop.METHODS: Current research was done according split plot experiment based on randomized complete blocks design with four replications along 2017 year. The main factor included water deficit stress at three level (A1: 70, A2: 100 and A3: 130 mm Class A evaporation pan) and combined effect of nitrogen fertilizer and vermicompost at five level (B1: 100% Nitrogen; 100% pure nitrogen equivalent to 200 kg per hectare, B2: 75% Nitrogen+25% Vermicompost, B3: 50% Nitrogen+50% Vermicompost, B4: 25% Nitrogen+75% Vermicompost, B5: 100% Vermicompost) belonged to sub plot.RESULT: According result of analysis of variance effect of different level of irrigation regime and combined effect of nitrogen fertilizer and vermicompost on all measured traits was significant but interaction effect of treatments (instead seed yield and biologic yield) was not significant. Simple correlation coefficients between traits were estimated according to Pearson coefficient. The most positive and significant correlation was observed between seed yield and biologic yield (0.859**), harvest index (-0.703**) and number of seed per raceme (0.646**) at 1% probability level. The traits of number of raceme per race (0.641*), race length (0.541*), number of seed per race (0.533*) and chlorophyll index (0.521*) had correlation with the seed yield was significant at 5% probability level.CONCLUSION: According to the results of this research, characteristics such as of biologic yield, harvest index and number of seed per raceme had the most positive-direct effects on Sorghum seed yield can be proposal to plant breeder to more studied process such as stepwise regression and path analysis.
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