Amino acid comparisons in male sterile wheat derived fromTriticum timopheevi zhuk. cytoplasm and its fertile counterpart.

Anthers, seeds, seedlings and flag leaves of fertile and cytoplasmic male sterile (Triticum timopheevi) lines of bread wheat were examined for free and acid-hydrolyzable (bound) amino acids. Free asparagine was found to be high in anthers of the male sterile line and free proline high in anthers of the fertile line.Among the bound amino acids, proline was lower, and aspartic and glutamic acid were higher, in male sterile than in fertile anthers. Retardation of glutamic and aspartic acid conversion to proline was believed to be a cause of proline deficiency in the male sterile line.The total amount of bound amino acids was higher in anthers, seed and flag leaves of the male sterile line compared with the fertile analogue.