Effects of Morphological Traits on Qualitative and Quantitative Yield of Bread Wheat (Triticum Aestivum L.) Cultivars.

Saeed Salehi^1*, Soleyman Gholami¹, Mahin Menati², Soraya Naseri ¹and Tahereh Parvin¹   

¹Young Researchers and Elite Club, Kermanshah Branch, Islamik Azad University, Kermanshah, Iran.

²Department of Educational Technology ,Faculty Of Huanities ,Kermanshah Branch, Islamik Azad University, Kermanshah, Iran.

DOI : http://dx.doi.org/10.13005/bbra/2089

ABSTRACT: Determination of the best selection indices in early generations through traits having heritability higher than yield as well as correlated significantly with seed yield is one of the most important breeding procedures. In order to determination of the most yielding bread wheat genotypes, identification of the traits affective on seed and protein yield as well as parents of the best crosses an experiment was conducted during 2014-2015. The randomized complete block design with three replications was used. Bread wheat genotypes comprised; Sepahan and Roshan cultivars as controls along with 18 lines entitled M-93-3 to M-93-20. Correlation analysis showed significant and positive reltionship among sedd yield and other traits. More over, step-wise regression and path analysis designated that grain filling rate, grain filling duration and no.spike/m² were the best indirect selection criteria to increase seed yield in common wheat. Increasingly, peduncle length, no. seed/spike and no. spikelet/spike were recommended to improve spike yield while peduncle diameter, days to flowering, days to maturity and plant height for photosynthetic reservoir improvement.

KEYWORDS: Common wheat; seed yield; indirect selection; path analysis

[ HTML Full Text]