Chapter 6

Question 1

vernalization

Answer 1

a period of cold temperatures required by plants to induce flowering.

Question 2

5 factors for seed production

Answer 2

soil type/fertility, detailed cropping history, soil moisture, dry environment during harvest, and isolation

Question 3

harvest maturity

Answer 3

time during seed development when the seeds can be harvested for germination without a significant reduction in seed quality

Question 4

noxious weeds

Answer 4

weeds that vary from state to state but have been designated as weed species that must be identified in the seed lot and may cause the whole seed lot to be unsaleable

Question 5

seed labels must include

Answer 5

name and cultivar, origin, germination percentage, and percentage of pure seed, other crop seed, weed seed, and inert material

Question 6

high quality seed is based on what factors

Answer 6

germination, purity, vigor, seed health, contamination

Question 7

standard germination test

Answer 7

most common, preformed according to standards, % of seeds in a lot that germinate normally. only normal seedlings counted

Question 8

seed priming

Answer 8

a controlled hydration process that results in faster germinating seeds

Question 9

cryopreservation

Answer 9

the storage of seeds or vegetative organs at an ultralow temperature. usually in liquid nitrogen