Univrsity of Tehran Press Iranian Journal of Field Crop Science 2008-4811 41 2 2010 07 23 Photosynthetat Partitioning Pattern to Aerial Parts of Bread Wheat in Dryland Condition and its Relationship with Grain Yield Photosynthetat Partitioning Pattern to Aerial Parts of Bread Wheat in Dryland Condition and its Relationship with Grain Yield 20983 FA Seyed Mohammad Alavi Sini Jalal Saba Farhad Jabari Kazem Soleimani Jaber Nsiri Journal Article 1970 01 01 This study was performed to investigate the photosynthetic partitioning pattern of materials to aerial parts of bread wheat in dryland conditions. It was as well to study its relationship with bread wheat resistance and grain yield in drought conditions. Seven genotypes including two cultivars (Azar2, Sardari) and five lines were investigated in a field experiment through a randomized complete block design with four replicates and in rainfed conditions during the 2 years of 2006 and 2007. Samplings were carried out in anthesis as well as in physiological ripening stages. Results showed that there are significant and positive phenotypic correlations between yield and most of the traits except percent of dry matter partitioning to stem during anthesis. As well no phenotypic relationships were observed between grain yield and percent of dry matter partitioning to leaf. Results also showed that the amount of spike dry matter in anthesis, biomass and harvest index had a positive and significant, phenotypic correlation with grain yield. Therefore, these traits can be employed in the selection of genotypes with high yields as the effective traits. This study was performed to investigate the photosynthetic partitioning pattern of materials to aerial parts of bread wheat in dryland conditions. It was as well to study its relationship with bread wheat resistance and grain yield in drought conditions. Seven genotypes including two cultivars (Azar2, Sardari) and five lines were investigated in a field experiment through a randomized complete block design with four replicates and in rainfed conditions during the 2 years of 2006 and 2007. Samplings were carried out in anthesis as well as in physiological ripening stages. Results showed that there are significant and positive phenotypic correlations between yield and most of the traits except percent of dry matter partitioning to stem during anthesis. As well no phenotypic relationships were observed between grain yield and percent of dry matter partitioning to leaf. Results also showed that the amount of spike dry matter in anthesis, biomass and harvest index had a positive and significant, phenotypic correlation with grain yield. Therefore, these traits can be employed in the selection of genotypes with high yields as the effective traits. https://ijfcs.ut.ac.ir/article_20983_5a5afe30465dfba12169e84722255c0a.pdf