Wheat plant stature components

Abstract

Wheat plant stature and its components were measured in non-segregated (P₁, P₂ and F₁) and segregated (F₂, RC₁F₁ and RC₂F₁) populations derived from crosses among different genotypes of wheat in field experiments carried out at the Agronomic Experimental Station/UFRGS, Guaíba, RS, in 1979. Internode patterns of both semi-dwarf and tall parents showed that: 1. Average internode lengths were progressively longer from the culm base to the spike; 2. A high portion of the phenotypic variation of the internode number was environmental in origin, and 3. The peduncle contributed with approximately 40% of the total stature of the genotypes.