Nitrogen and phosphorus uptake and utilization efficiency in D(R) substitution lines of hexaploid triticale

Abstract

Two sets of disomic substitution lines, derived from the cultivars ÔPrestoÕ and ÔRhinoÕ of triticale, with rye chromosome pairs replaced by their wheat D-genome homoeologues, were tested in hydroponic culture for nitrogen and phosphorus uptake and utilization efficiency. The effect of a substitution on the amount of absorbed nutrients was predominantly negative and proportional to the effect on plant dry matter. Significant decreases were found for the substitutions 5D(5R), 6D(6R) of both cultivars, 2D(2R), 4D(4R) of ÔPrestoÕ and 3D(3R) of ÔRhinoÕ. On the other hand, the nitrogen utilization efficiency was significantly increased in all substitution lines, with the exception of the 1D(1R) ones. The differences in phosphorus utilization were generally positive, but less pronounced, and significant only in the lines 2D(2R) and 6D(6R). The data suggest that presence of both rye and D-genome chromosomes is conducive for the best effect of the applied N and P fertilizers.

The influence of homoeologous D(A) and D(B) substitutions on plant dry matter, nitrogen and phosphorus accumulation and utilization efficiency in hexaploid triticale young plants grown in hydroponics

“…The highest PUE seems to be correlated with presence of the 4D rather than with absence of 4A or 4B. Our previous investigation on the D(R) substitutions (Oracka, Łapiński, 2006) indicated extremely positive effects of the 4D''(4R') incomplete substitution (with one rye chromosome maintained) in 'Rhino' on the parameters studied, which confirms high value of the 4D chromosome in engineering of environment friendly triticale. In the research of Budzianowski and Woś (2004) the chromosomes 4D, in the same 4D(4A) and 4D(4B) substitution lines, were among the most efficient in rising tolerance to high concentration of aluminium ions.…”

“…The results for both 6D(6A) and 6D(6B) substitutions indicate that presence of the 6D chromosome rather than absence of the 6A or 6B is responsible for PUE increase. The 6D(6R) substitution of rye chromosome (from our earlier studies) also exerted positive effect on the PUE and NUE parameters (Oracka, Łapiński, 2006). The PUE and plant dry matter were remarkably high also in the 2D(2B) substitution of 'Presto'.…”

“…On the other hand, according to Huang et al (2007), the D-genome of common wheat, which has not been included to hexaploid triticale, also contains valuable genes controlling utilization of mineral nutrients. Our earlier studies (Oracka, Łapiński, 2006) on two sets of D(R) substitution lines of hexaploid triticale revealed a positive influence of almost all substituting D genome chromosome pairs on the efficiency of use of the absorbed nitrogen and phosphorus. Therefore a question appears on a possibility to combine the positive effects of R-and D-genomes' chromosomes in a single hexaploid triticale karyotype.…”

The abiotic stress response and adaptation of triticale — A review

“…Research with disomic substitution lines, derived from the triticale cultivars 'Presto' and 'Rhino' allowed to conclude that both rye and the D chromosomes of wheat were involved in the P and N efficiency under conditions of nutrient solution (Oracka and Lapimski 2006).…”

Chromosomal Location of Traits Associated with Wheat Seedling Water and Phosphorus Use Efficiency under Different Water and Phosphorus Stresses

“…The substitution lines derived from the triticale ‘Presto’ and ‘Rhino’ cultivars were tested in hydroponic culture for nitrogen and phosphorus uptake and utilization efficiency. The nitrogen utilization efficiency (NUE) was significantly increased in all substitution lines with the exception of 1D(1R) ones, phosphorus utilizations were generally significantly positive only in the lines 2D(2R) and 6D(6R) [ 28 ]. Chromosomes 1D, 2D, 2B, 3A, 3D, 4A, 4B, 6A, 6B, 7D and 7A were associated with drought tolerance of Synthetic 6x in substitution lines of Chinese Spring (CS)-Synthetic 6x [ 29 ].…”