Question

Norin 10 gene from Japan is a ________
a) Dwarf gene of a rice
b) Dwarf gene of wheat
c) Dwarf gene of tomato
d) Smut resistance gene of wheat

Answer 1

In countries like India and Pakistan, which are the developing countries, Norin-10 helped to increase the productivity of wheat crops from approximately 60% during the green revolution. Wheat Norin-10 is a semi-dwarf wheat cultivar with very large ears that was bred at an experimental station in Iwate Prefecture, Japan.

Complete answer:
In the third century or the fourth century the journey of semi dwarf wheat started. It started from Japan to Mexico. Breeders from different countries began the production and utilization of dwarfing genes. It helped them to achieve the goal of high breeding, resistance to lodging which were the main challenges in production of wheat. Norin 10 can be tracked as to Daruma. Daruma was a short straw variety which was crossed with one one soft wheat variety and one hard wheat variety. Hybridization in crops and plant biotechnology techniques helps the scientists to achieve the desired characteristics and feature in a crop or in a plant. Main idea is to achieve high productivity and efficiency for the producers who are farmers and consumers who are people who consume the crop produced so that there is better food quality and less destruction of crops in less time. Therefore the correct answer is (b). Norin 10 is not related to the dwarf gene of a rice and tomato. It is only related to the dwarf gene of wheat.

Hence correct option is B i.e. Dwarf gene of wheat.

Note: Lodging was a serious problem in winter wheat, a wheat species of US when high rates of nitrogen fertilizers were applied. Norin-10 was used in US breeding programs in the 1950s in order to improve lodging resistance in winter wheat.