ISSN:
1435-0653
Source:
Springer Online Journal Archives 1860-2000
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Secale cereale L.) chromosome one (1RS) has been associated with an increase in grain yield in hard red winter wheat (Triticum aestivum L.). This positive effect has been demonstrated when the 1RS arm is present in the 1BL.1RS translocation. However, little information is available regarding the 1AL.1RS translocation of yield and yield components and their stability across environments. Eighteen homogeneous 1A lines (non-1RS) and 16 1AL.1RS lines were randomly derived from the heterogeneous cultivar Nekota. These 34 line, four composites (1A, 1AL.1RS, 1AL.1RS = 1A, and Nekota), along with six check cultivars were grown in eight Nebraska environments. The 1AL.1RS translocation in the Nekota background increased kernel weight (3.3%) and grain volume weight (0.4%); had no effect of grain yield, kernels per spike, and anthesis date; and decreased plant height (1.2%) and number of spikes per square meter (2.9%). The 1A lines and 1AL.1RS lines were equally stable for grain yield, kernels per spike, spikes per square meter, and plant height. For kernel weight, the 1A lines were more responsive and tended to have heavier kernels under favorable environments, while the 1AL.1RS lines had heavier kernels under lower yielding environments. For grain volume weight, the 1A lines were more responsive than the 1AL.1RS lines, which had heavier grain volume weight under lower yielding environments. Hence, the 1AL.1RS translocation in Nekota was not beneficial for either agronomic performance or stability.
Type of Medium:
Electronic Resource
