Effects of morphological traits and yield componenets on seed and protein yield in bread wheat (Triticum aestivum L.) cultivars
Journal Title: International Journal of Farming and Allied Sciences - Year 2013, Vol 2, Issue 2
Abstract
The effects of morphological and morpho-physiological traits on seed and protein yield of bread wheat were evaluated using twenty genotypes. Randomized complete block design with three replications was used in this research. Relationship among measured traits were assessed by Pearson's correlation coefficient and factor analysis. Correlation analysis showed the significant reltaion of seed and protein yield with all the traits except correlation of grain filling duration and peduncle length with seed yield as well as spike yield and peduncle length with protein yield. Factor analysis based on principal component analysis method and varimax rotation indicated that four important factors accounted for about 94.311 percent of the total variation among traits studied. The first factor assigned 34.995 percent of total variation between traits and was significantly related with traits seed yield, biological yield, protein yield and protein percentage. This factor was regarded as quantitative and qualitative yield improvement factor. Other factors accounted for 23.699, 12.918 and 22.699 percent of variation between traits so were entitled as spike yield, grain filling ability and photosynthesis reservoir enhancement factors, respectively. Overall, results revealed effect of grain filling rate, biological yield, no.seed/spike, spike yield and protein percentage on seed and protein yield. Hence, these traits are recommended as indirect selection criteria for genetic improvement of seed yield especially in early generations.
Authors and Affiliations
Saied Salehi, Ghorban Noormohammadi, Sayyed Mohammadjavad Mirhadi, Akbar Ghandi
Keywords
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