Norin-10 gene is famous for________.a)Early maturationb)Dwarfing effectc)Aromatic effectd)Gigas effectCorrect answer is option 'B'. Can you explain this answer?

Question

Answer

Norin-10 gene is famous for Dwarfing effect

Answer

Norin-10 gene is used to obtain dwarf varieties of crops like rice and wheat. This gene is introduced in crop plants by using technique of genetic engineering.

Answer

£ Norin 10 is a semi-dwarf wheat cultivar with very large ears that were bred at an experimental station in Japan. Norin 10 grew to just two feet tall, instead of the usual four, which made it less prone to wind damage.

---))The plant grows only two feet tall and hence are less destroyed due to wind flow. This is known as the dwarfine effect. plant produce large ears and more seeds.

Thus, the correct answer is option B.

Answer

Norin 10 is the semi-dwarf wheat variety which was bred in Japan. The plant contains the two genes, Rht1 and Rht2 which are known as the reducing height genes. The plant grows only two feet tall and hence are less destroyed due to wind flow. This is known as the dwarfine effect. The plant produces large ears and more seeds

Answer

Wheat Norin 10 is a semidwarf wheat cultivar with very large ears that were bred at an experimental station in Japan. The plant contains two genes, Rht1 and Rht2 which are known as the reducing height genes. The plant grows only two feel tall and hence are less destroyed due to wind flow. This is known as the dwarfine effect. Norin 10 helped developing countries, such as India and Pakistan, to increase the productivity of their crops from approximately 60% during the green revolution.

Answer

Introduction:
The Norin-10 gene is famous for its dwarfing effect in crops, particularly in wheat. This gene has played a significant role in the development of high-yielding wheat varieties, which has greatly contributed to improving crop productivity worldwide.

Dwarfing Effect:
The dwarfing effect of the Norin-10 gene refers to the reduction in plant height observed in wheat plants carrying this gene. This characteristic is highly desirable in wheat breeding programs as it helps to improve lodging resistance and increase grain yield.

Background:
The Norin-10 gene was first identified in a wheat variety called Norin-10, which was derived from a Japanese wheat cultivar. It was introduced into breeding programs in the 1960s and played a crucial role in the Green Revolution, a period of rapid agricultural expansion that aimed to increase food production to meet the growing global population's demands.

Benefits:
The dwarfing effect of the Norin-10 gene has several advantages in wheat cultivation:
1. Lodging Resistance: Shorter plants are less prone to lodging, which is the bending or breaking of stems due to the weight of the grain or adverse weather conditions. Lodging can lead to significant yield losses, and the Norin-10 gene helps to reduce this risk.
2. Increased Grain Yield: The dwarfing effect of the gene allows more energy to be diverted towards the production of grains, leading to higher yields. This has been a crucial factor in the success of the Green Revolution and ensuring food security.
3. Improved Harvesting Efficiency: Shorter plants facilitate easier harvest operations as they are less likely to get tangled or bent during mechanical harvesting processes.

Limitations:
While the Norin-10 gene has provided numerous benefits to wheat cultivation, it also has some limitations:
1. Reduced Biomass: The dwarfing effect of the gene can result in a decrease in overall plant biomass. This may affect the nutrient uptake capacity of the plant and its ability to withstand certain environmental stresses.
2. Disease Susceptibility: Some studies have suggested that the Norin-10 gene might increase the susceptibility of wheat plants to certain diseases, such as Fusarium head blight. However, this can be managed through appropriate crop management practices and breeding strategies.

Conclusion:
The Norin-10 gene's dwarfing effect has revolutionized wheat breeding and contributed significantly to the increased productivity and sustainability of wheat cultivation. By improving lodging resistance, increasing grain yield, and enhancing harvesting efficiency, this gene has played a critical role in meeting the global food demand and ensuring food security. Despite its limitations, the Norin-10 gene remains a valuable tool in wheat breeding programs.

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