Objectives Of Plant Breeding pdf

Quiz 7

61) The oldest method of plant breeding is­
(A) Introduction
(B) Hybridization
(C) Selection
(D) None of above
Correct Answer :­Selection 

62) Method of selection in plants showing vegetative propagation is:­
(A) Pedigree selection
(B) Pure line selection
(C) Clonal selection
(D) Mass selection
Correct Answer :­Clonal selection 

63) The best way to obtain bacteria and virus free plants through tissue culture is­
(A) Micro propagation
(B) Seed germination after gamma irradiation 
(C) Shoot tip culture
(D) All of above
Correct Answer :­Micro propagation
64) The hybrid progeny of cytoplasmic male sterile plants would be?
(A) Hermaphrodite
(B) Male sterile
(C) Female sterile
(D) All of these 
Correct Answer :­Male sterile 

65) The process involving inspection, fumigation and growing the introduced plant material in isolation is known as
(A) Acclimatization
(B) Quarantine
(C) Adaptation
(D) All of above
Correct Answer :­Quarantine 

66) If the introduction of any wild species or land cultivation is done, for developing genetically improved variety, by selection or cross hybridization, it is referred to as:­
(A) Primary Introduction
(B) Secondary Introduction
(C) Modification
(D) None of the above
Correct Answer :­Secondary Introduction 

67) Which of the following varieties of wheat was selected from one of the variety of CIMMYT, Mexico) ?
(A) Sonora 64
(B) Lerma roso
(C) Kalyan Sona
(D) All of the above
Correct Answer :­Kalyan Sona 

68) Which of the following weeds have been introduced in India from other countries along with plant materials ?
(A) Argemone Mexicana
(B) Eicchornea crassipes
(C) Parthenium
(D) All of above
Correct Answer :­All of above 

69) Pure line selection is also called­
(A) Inbred selection
(B) Progeny selection
(C) Single line selection
(D) All of above
Correct Answer :­All of above 

70) Mutation frequency during plant breeding depends on­
(A) Dose (concentration × time)
(B) Temperature 
(C) pH Value 
(D) All of the above

Correct Answer :­All of the above 

Quiz: 1   2   3   4   5   6   7   8   9   10
Plant Pathologists are scientists concerned with the understanding of the
Objectives Of Plant Breeding pdf
dynamic processes involved in the plant health. Plant Pathology is defined as the study of the organisms and environmental conditions that cause disease in plants, the mechanisms by which this occurs, the interactions between these causal agents and the plant (effects on plant growth, yield and quality), and the methods of managing or controlling plant disease. Plant breeding has been practiced for thousands of years, since near the beginning of human civilization. It is practiced worldwide by individuals such as gardeners and farmers, or by professional plant breeders employed by organizations such as government institutions, universities, crop-specific industry associations or research centers.
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