30 Questions
Which factor is responsible for genetic deterioration in seed due to different soil and fertility conditions?
Developmental variations
What is the most important source of variety deterioration during seed production?
Mechanical mixture
Which of the following factors is responsible for the maintenance of genetic purity of any seed variety?
Technique of the plant breeder
What may lead to genetic deterioration in seed due to different photoperiods or elevations?
Developmental variations
Which factor is responsible for genetic deterioration in seed due to selective influence of diseases?
Selective influence of diseases
How can the genetic purity of a variety be maintained during seed production?
By minimizing mechanical mixture
What can lead to the deterioration of genetic purity in a seed variety?
Natural crossings
What is the significant source of genetic contamination and variety deterioration in sexually propagated crops?
Natural crossing
How can mixing during harvesting and threshing lead to varietal deterioration?
By contaminating equipment with seeds of other varieties
What can be difficult to identify and may require rouging from seed plots to purify the seeds?
Mutations
How can selective influence of diseases impact the genetic purity of new crop varieties?
By becoming susceptible to new races of diseases
What may still exist in varieties even if they appear uniform and homogenous at the time of release?
Minor genetic variations
What should be maintained to keep genetic purity in seed crops?
Regular rouging operations
Which agronomic principle is important for successful seed production?
Avoiding high temperatures and strong winds
What should the soil of the seed plot be free from?
Diseases and salinity
What is a critical factor in field preparation for seed crops?
Eliminating weeds and preparing a favorable seedbed
What is an important consideration for the selection of seed variety?
Adaptation to local conditions and high popularity
Where should the seed used for planting be obtained from?
Authorized agencies with intact tags and seals
What are the recommended measures for weed control in seed crops?
Good crop rotation and suitable herbicides
What is a consideration for seed planting time?
Planting at normal time with sufficient soil moisture
What is an important factor in the application of fertilizer for seed crops?
Balanced form and considering individual crop needs and soil fertility status
What is the process of removing unwanted plant types and weeds from the seed crop?
Rouging
What is the crucial process in seed production involving the transfer of pollen from the male anther to the female stigma?
Pollination
How can seed producers aid insect pollination?
By attracting bees and other insects to crops
What is necessary to verify seed sources and check for unwanted plant types and weeds?
Seed inspections
What is essential to maintain seed quality?
Disease and insect control
When should seed harvesting be carried out?
At optimal moisture levels and weather conditions
What should be done to seeds after harvest for preservation?
Seeds should be dried after harvest to safe moisture content levels
Where ideally should seeds be stored from maturity until planting?
In cool, dry, clean facilities with proper labeling
How can seeds be protected against high relative humidity for long-term storage?
By using appropriate packaging materials and methods
Study Notes
- Pollination is a crucial process in seed production, involving the transfer of pollen from the male anther to the female stigma
- Seed producers can aid insect pollination by attracting bees and other insects to crops through methods like colony placement and wild bee cultivation
- Seed inspections are necessary to verify seed sources and check for unwanted plant types and weeds
- Rouging is the process of removing unwanted plant types and weeds from the seed crop
- Disease and insect control are essential to maintain seed quality
- Seed harvesting should be carried out at optimal moisture levels and weather conditions
- Seeds should be dried after harvest to safe moisture content levels for preservation
- Seeds are stored from maturity until planting, ideally in cool, dry, clean facilities with proper labeling to prevent mechanical mixture
- Seeds can be packaged in materials like cotton, jute, and paper but should be protected against high relative humidity for long-term storage.
Test your knowledge on seed plot soil management and certification standards with this quiz. Learn about the requirements for using land for seed production and preventing soil-borne diseases and pests.
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