The 1BL/1RS chromosome translocation effect on yield characteristics in a Triticum aestivum L. cross |
| |
Authors: | R. L. Villareal E. del Toro A. Mujeeb-Kazi S. Rajaram |
| |
Affiliation: | International Maize and Wheat Improvement Center (CIMMYT), Lisboa 27, Apartado Postal 6-641, Deleg. Cuauhtemoc, 06600 Mexico, D.F., Mexico |
| |
Abstract: | Comparisons involving 28 random F2-derived F6 wheat (Triticum aestivum L.) lines from the cross, ‘Nacozari’/‘Seri 82’, suggested that advanced derivatives with the 1BL/1RS chromosome translocation possess superior agronomic performance in both full and reduced irrigation conditions when compared with 1B derivatives. This performance advantage was attributed to high grain yield, above-ground biomass at maturity, grains/spike, 1000-grain weight and test weight. The 1BL/1RS lines were shorter with delayed flowering and maturity. The superiority of the 1BL/1RS translocation group on grains/m2 was expressed only under the full irrigation environment. Higher harvest index, longer spike-length and grain-filling period were detected only under reduced irrigation conditions. A significant grain yield relationship with test weight was detected only among the 1BL/1RS genotypes, indicating that they possess heavier and plumper grains than the 1B genotypes. |
| |
Keywords: | Secale cereale Triticum aestivum 1BL/1RS translocation yield components |
|
|