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Questions and Answers
What is one way to maintain the genetic purity of established varieties according to the text?
What is one way to maintain the genetic purity of established varieties according to the text?
- Growing in isolated pots (correct)
- Bulk selection of 500 plants
- Mixing with other crop varieties
- Using old seeds for planting
In bulk selection for improving genetic purity, how many off-types or dissimilar plants should lead to the discard of a plot?
In bulk selection for improving genetic purity, how many off-types or dissimilar plants should lead to the discard of a plot?
- 39 (correct)
- 20
- 50
- 5
What method is preferred for maintaining nucleus seed of inbred lines to avoid reducing vigor?
What method is preferred for maintaining nucleus seed of inbred lines to avoid reducing vigor?
- Self-pollination
- Cross-pollination
- Hand pollination (correct)
- Bulk planting
Why is maintenance of varieties of cross-pollinated crops more complicated than self-pollinated crops?
Why is maintenance of varieties of cross-pollinated crops more complicated than self-pollinated crops?
Which breeding practice involves self pollination, sib pollination, or a combination of both?
Which breeding practice involves self pollination, sib pollination, or a combination of both?
Why is maintenance by sibbing preferred over selfing when maintaining nucleus seed of inbred lines?
Why is maintenance by sibbing preferred over selfing when maintaining nucleus seed of inbred lines?
What is the recommended practice to maintain breeder stock seed of established varieties?
What is the recommended practice to maintain breeder stock seed of established varieties?
What is the purpose of roughing before flowering in the context of maintaining breeder stock seed?
What is the purpose of roughing before flowering in the context of maintaining breeder stock seed?
Why is it important to have sufficient spacing between and within the rows when growing breeder stock seed?
Why is it important to have sufficient spacing between and within the rows when growing breeder stock seed?
What step should be taken when harvesting breeder stock seed to ensure purity?
What step should be taken when harvesting breeder stock seed to ensure purity?
In what condition should the equipment used for harvesting, threshing, and cleaning breeder stock seed be?
In what condition should the equipment used for harvesting, threshing, and cleaning breeder stock seed be?
Why is it recommended to isolate the field when sowing breeder stock seed?
Why is it recommended to isolate the field when sowing breeder stock seed?
When should major rouging be done during the paddy cultivation process?
When should major rouging be done during the paddy cultivation process?
What is the recommended seed rate for paddy cultivation per hectare?
What is the recommended seed rate for paddy cultivation per hectare?
During which stage of seed production is it desirable to grow paddy under the transplanting system?
During which stage of seed production is it desirable to grow paddy under the transplanting system?
At what stage should rouging of offtypes be done in the paddy field?
At what stage should rouging of offtypes be done in the paddy field?
How many field inspections are recommended between flowering and harvesting during paddy cultivation?
How many field inspections are recommended between flowering and harvesting during paddy cultivation?
What is the recommended spacing for medium and late duration variety paddy plants?
What is the recommended spacing for medium and late duration variety paddy plants?
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