Name the high-yielding semi-dwarf varieties of wheat selected and introduced in India in 1963 - Biology


Name the high-yielding semi-dwarf varieties of wheat selected and introduced in India in 1963.



Sonalika and Kalyansona were the high-yielding semi-dwarf varieties of wheat selected and introduced in India in 1963.

Concept: Plant Breeding
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2014-2015 (March)


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Write a short note on ‘Mutational breeding’.

Which steps would you follow to develop a new variety of crop plant by selective breeding?

Plant breeding technique has helped sugar industry in North India. Explain how.

Name any two common Indian millet crops.

In Brassica (rapeseed, mustard)........................ varietys is resistant to Aphids.

(a) Pusa A-4
(b) Pusa Gaurav
(c) Pusa Sawni
(d) . Pusa Shubra

Vijaya, Padma, Kanti and Jayanti are high-yielding varieties of ______.

Give the names of ‘two’ insect-resistant crop varieties.

What is emasculation?

With the help of suitable diagram define 'bagging' and 'tagging' of  flower.

In an agricultural field there is a prevalence of the following organisms and crop diseases which are affecting the crop yield badly:
(a) White rust
(b) Leaf and stripe rust
(c) Black rot
(d) Jussids

Recommend the varieties of crops the farmers should grow to get rid of the existing problem and thus improve the crop yiel.

State one characteristic of millets that has been improved as a result of hybrid breeding so as to produce high yielding millet crops.

What is heterosis?

Name the scientists who Coined the term Diffusion Pressure Deficit

Define Osmotic pressure

Definition and importance of Imbibition

Describe the mass flow hypothesis for translocation of organic solutes (food) in plants.

Answer the following question:

Give the scientific term used for the preservation of germplasm at a very low temperature.

Give a reason for the following: 

Bagging is essential in artificial hybridization.

Wheat -Atlas 66 has high contents of ______.

While studying the history of the domestication of various cultivated plants _______ were recognized earlier.

Plants having similar genotypes produced by plant breeding are called

Importing better varieties and plants from outside and acclimatizing them to the local environment is called

Crosses between the plants of the same variety are called

Which one of the following crop varieties correct matches with its resistance to disease?

Variety Resistance to disease
a) Pusa Komal Bacterial blight
b) Pusa Sadabahar White rust
c) Pusa Shubhra Chilli mosaic virus
d) Brassica Pusa swarnim

Explain the best-suited type followed by plant breeders at present?

Column - I contains names of host plant while Column - II contains names of viral dieases. Find the correct option.

  Column-I   Column-II
(I) Banana (p) little leaf
(II) Sugarcane (q) bunchy top
(III) Papaya (r) leaf roll
(IV) Brinjal (s) grassy shoot
    (t) leaf curl

Smooth leaved and necterless cotton varieties are NOT affected by ____________.

In hybridization experiments 'true breeding' means off-springs show ____________.

The science of changing and improving the heredity of plants is called ______

Which method of plant breeding has been used to develop a powdery mildew-resistant variety of moong beans?

Sonora – 64 is a variety of ______.

Give any four advantages of mutation breeding.

Animal husbandry and plant breeding programmes are the examples of:

The biggest constraint of plant breeding is:

Breeding of crops with high levels of minerals:

Mechanism of fast Speciation in crop plants is ______.

If a diploid cell is treated with colchicine then it becomes:

Polyploidy leads to the rapid formation of new species because:

The plant which is used for Studying hybrid vigour or heterocyst:

Shakti, Rattan and protina are three important lysine-rich varieties of:

Which one of the following pathogens causes cancer disease?

The biggest constraint of plant breeding is ______.

Sugarcane which grow in North India, and which do not grow in north India. 

Match the columns-

  Column A   Column B
A. Kalyan Sona 1. Rice
B. Pusa sawani 2. Wheat
C. IR - 8 3. Okra

Mutations in plant cells can be induced by ______

Which of the following is not an objective of Biofortification in crops?

Which one of the following is not a fungal disease?

Several South Indian states raise 2-3 crops of rice annually. The agronomic feature that makes this possible is because of ______.

The scientific process by which crop plants are enriched with certain desirable nutrients is called ______.

In the area of plant breeding, it is important not only to preserve the seeds of the variety being cultivated, but also to preserve all its wild relatives. Explain with a suitable example.

Life style diseases are increasing alarmingly in India. We are also dealing with large scale malnutrition in the population. Is there any method by which we can address both of these problems together?

Name the improved characteristics of wheat that helped India to achieve green revolution.

Bioforified crops are ______.

What are A, B in the following table:

Transgenic Crop Substance Transgene
(i) A Flavonoids Chalone isomerase
(ii) Rice B Ferritin

Match the following:

Sr. No. Column I   Column II
(i) Eutrophication (a) A soil erosion
(ii) Biomagnification (b) carbon monoxide, methane
(iii) Particulate pollutant (c) Prevention of extinction
(iv) Conservation (d) Dust, smog
(v) Gaseous pollutants (e) Accumulation of nonbiodegradable
(vi) Deforestation (f) Death of aquatic ecosystem


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