Reviewing Changes of Yield Relationship with Yield Components of Promising Genotypes of Rainfed Barley by Path Analysis
Journal Title: International Journal of Farming and Allied Sciences - Year 2013, Vol 2, Issue 1
Abstract
An experiment was conducted in a randomized complete block design with four replications on 15 promising barley lines in rain-fed agricultural research site of KhorasanShomali within 20 km from Shirvan in 2011-2012. The aim was studying the correlation of grain yield with yield components and determining the contribution of yield components and estimating the direct and indirect effects of yield components on grain yield. Traits including days to heading, number of days to maturity, grain height, panicle length, number of panicles per square meter , number of grains per panicle, biological yield, grain weight, harvest index and grain yield. Data analysis showed a significant difference between lines in term of all the traits. The traits such ascorrelation and path analysis were also studied. Path analysis, numbers of panicle per square meter, number of grains per panicle and grain weight had the most direct effect on grain yield, respectively, these traits could be used as selection criterion in barley breeding programs and producing high-yielding varieties. Number of panicle per square meter had the most indirect positive effect on grain yield through number of grains per panicle, panicle length and biological yield.Correlation coefficients showed that there was a significant negative correlation with the probability of (α= 0.01) between the traits of grain weight with grain number and there was a positive and significant relationship between numbers of panicle per square meter and number of grains per panicle. Furthermore, there was a positive and non-significant correlation between grain weight and yield and there was a positive and significant correlation between number of grains per panicle and numbers of panicle per square meter and yield with the probability of (α= 0.01). The comparison of means of grain yield showed that the grain had the highest yield between the lines 3, 6, and 4 in terms of grain yield.Total average of grain yield was 1785 kg per hectare and the coefficient of the experiment variations was 4.49%.
Authors and Affiliations
Maliheh Mehrdelan, Ali Marjani, Maryam Reihani, Tahereh Ragbar and Kazem Masoumi
Keywords
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