1. A change in the chemistry of a gene that is perpetuated in subsequent divisions of the cell in which it occurs; a change in the sequence of base pairs in the chromosomal molecule. 2. De Vries, term for the sudden production of a species, as distinguished from variation. [L. muto, pp.
Sugar or snow peas are grown for their flat, green pods. Peas are a cool-season crop that must mature before the weather gets warm. The ideal growing temperature for peas is 55Â°F to 70Â°F. Sow peas in the garden 6 weeks before the average last frost date in spring or as soon as the soil can be worked.How to plant and spacing.lanting time. Peas are a cool-season crop that must mature before the weather gets warm. The ideal growing temperature for peas is 55Â°F to 70Â°F. Sow peas in the garden 6 weeks before the average last frost date in spring or as soon as the soil can be worked.
2 Peas are a cool-season crop and should be sown directly into the ground when the soil temperature is at least 50Â°F, and the soil is dry enough to work without it sticking to garden tools. For bush varieties, sow seeds about one inch deep and two inches apart, in rows spaced 18 to 24 inches apart.heck the mois-ture level of the soil near the root zone of the pea plants; it should be moist and pliable, not dry and crumbly, or wet and soggy. Signs of low soil fertility are stunted plants with pale leaves, or vigorous plants that fail to bloom or set fruit. Another key period for maintenance is flower bloom.