Genetic Analysis of Traits Related to Grain Characteristics and Quality in Two Crosses of Rice

摘要

A genetic study was made on the rice crosses IR648-3-1-2-3/Gow Ruang 88 and IR648-3-1-2-3/Khao Pahk Maw 148 to determine the genetic components of five grain characteristics and plant type, and the genotypic relationship between the two groups of characters. The genetic materials in each cross included the two parents and F1, F2, F3, B2S populations grown in replicated plots. The different types of gene effects controlling selected traits and the independence between the yield component characters and grain characteristics found in this study provide directions in formulating useful effective selection procedures for specific traits or the combination of desired traits in a breeding program.