mutant variety of wheat
Answers
Answer:
Mutant varieties have a great impact on durum wheat production, both in Italy and other countries like Bulgaria or Austria where Italian mutants have been used successfully in cross-breeding. Durum wheat, Triticum turgidum bar
Answer:
A semi-dwarf mutant (HUW-SDf 1) was induced from common wheat Var. K68 through the exposure of 60Co gamma-rays at 15 kR. This mutant along with other induced mutants and control was assessed for yield components, yield and grain quality (M4 generation); internode length reduction pattern and the yielding ability at three levels of nitrogen (M5 generation).
The mutant was significantly shorter in height and almost equal in tillers per plant and grains per spike to K68. However, it showed marked reduction in spike length and spikelets per spike. On the other hand, it possessed significantly higher (50·04 g) 1000-grain weight against control (41·15 g). The mutant gave 56·0% higher yield than the control.
Grain quality studies indicated that the mutant possessed significantly higher (14·15%) total protein than K68. It was equally as good as K68 in lysine content. Pelshenke value (62·5 min) of the mutant indicated medium hard nature of gluten as compared to hard nature (198·0 min) of the control.
The mutant showed 24·0% reduction in total culm length compared to K68. Reduction occurred due to maximum and almost equal reduction in 5th and 4th internodes (ca 34·0%) followed by 3rd, 2nd and 1st.
The mutant showed similar yield and yield response to increasing nitrogen levels (80–160 kg per ha.) as for current commercial semi-dwarf varieties.