The Effect of Friabilin on Wheat Grain Hardness

摘要: A wheat marketing system established the primary classification of hexaploid based on endosperm texture, i.e. hardness or softness grain. Hardness affects a range characters including milling (tempering, yield, flour particle size, shape and density particles), baking end-use properties. Wheat grain is largely controlled by genetic factors but it can also be affected en - vironmental other factors. The texture primarily associated with (Ha) locus short arm chromosome 5D. It regulated friabilin. This 15 kDa starch surface protein complex present in larger amounts soft wheats compared to hard ones consists three major polypeptides: puroindoline (Pina), b ( Pinb) 1 Gsp-1). result both genes being wild type active form bound starch. When one puroindolines either absent altered mutation, then texture. Gene sequence variation mutation account for majority latter may serve as potential improvement quality. However, many varieties have intermediately (mixed) there wide between Grain number beyond genetics N management, tillage system, pest infestations, environment (location growth, temperature rainfall during growing season) their interactions, such moisture, gliadin composition, content lipids, pentosans.