Comparative performance of bread wheat and hexaploid triticale cytoplasms

Area of Science:

• Plant breeding and genetics
• Crop science
• Agronomy

Background:

• Cytoplasmic effects play a crucial role in plant breeding, influencing various agronomic traits.
• Understanding cytoplasmic inheritance is vital for optimizing crop performance and developing improved varieties.

Purpose of the Study:

• To compare the performance of bread wheat and triticale cytoplasms in advanced-generation triticale x wheat derivatives.
• To investigate reciprocal differences in F1 hybrids resulting from crosses between triticale derivatives and bread wheats.

Main Methods:

• Reciprocal crosses were performed between thirteen triticale x wheat derivatives (with tetraploid wheat cytoplasm from triticale) and three improved bread wheats.
• The resulting F1 hybrids were evaluated for key agronomic and yield-related traits.

Main Results:

• Significant reciprocal differences were observed for multiple traits, including days to heading, maturity, plant height, grain yield, and protein content.
• Hexaploid wheat cytoplasm generally showed superiority for most evaluated traits.
• The observed cytoplasmic superiority was not consistent across all traits, indicating genotype-cytoplasm interactions.

Conclusions:

• Cytoplasmic background significantly influences the performance of triticale x wheat derivatives.
• The interaction between specific genotypes and cytoplasmic background is a critical factor determining trait expression.
• These findings have implications for breeding strategies aimed at optimizing triticale and wheat performance.