Recently, climatic change has supported delay for some days in the previously suggested planting time of wheat in Pakistan. Delayed planting can also improve grain protein contents. Grain protein in wheat is a major source of plant protein in human food and therefore, grain quality is decided on grain protein. Grain protein and yield of wheat are affected by environmental conditions and can be regulated by planting time besides genetic factors. In this study, three wheat genotypes viz. Aas-2011, Sehar-2006 and AARI-2010 and two planting times viz. December 1 and 15, were investigated to determine the planting impact on grain protein and crop productivity. Significant increase in grain protein (19% higher) was recorded in late planted wheat than early one. Wheat genotypes also varied in protein contents. Genotypes Aas-2011and Sehar-2006 proved superior with 16% more grain protein content over AARI-2010. Thousand grain weight was significantly affected by planting date and genotype. Grain protein was found nonsignificantly negatively correlated (r = - 0.1789) with grain yield (n = 24). Grain yield and biomass did not vary significantly with some days delay in planting time and genotypes. It is evident from the results that optimum grain protein in wheat can be attained by considering appropriate planting time and genotypes.
Muhammad Saleem, T.M. Qureshi, M. Yasin Ashraf, Mahmood-ul-Hassan, Anwar-ul-Haq, Khalid Mahmood. (2015) DELAYED PLANTING AND GENOTYPE AFFECT GRAIN PROTEIN AND YIELD OF WHEAT, , Volume 12, Issue 1.
