Kingdom Plantae Family Fabaceae
Lindl. Genus Pisum Higher classification Pea | Order Fabales Subfamily Faboideae Species Pisum sativum Rank Variety | |
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Scientific name Pisum sativum var. saccharatum Similar Pea, Broccoli, Bok choy, Garden asparagus, Broad bean | ||
How to garden grow snow peas
The snow pea (Pisum sativum var. saccharatum) is a legume, more specifically a variety of pea eaten whole in its pod while still unripe. The name mangetout (French for “eat all”) can apply both to snow peas and to snap peas.
Contents
- How to garden grow snow peas
- How to grow snow pea shoots
- In food
- As nitrogen fixers
- Cultivation and storage
- History
- References
How to grow snow pea shoots
In food
Snow peas, along with sugar snap peas and unlike field and garden peas, are notable for having edible pods that lack inedible fiber (in the form of "parchment", a fibrous layer found in the inner pod rich in lignin) in the pod walls. Snow peas have the thinner walls of the two edible pod variants. Two recessive genes known as p and v are responsible for this trait. p is responsible for reducing the schlerenchymatous membrane on the inner pod wall, while v reduces pod wall thickness (n is a gene that thickens pod walls in snap peas).
The stems and leaves of the immature plant are used as a vegetable in Chinese cooking, stir-fried with garlic and sometimes combined with crab or other shellfish.
As nitrogen fixers
As with most legumes, snow peas host beneficial bacteria, rhizobia, in their root nodules, which fix nitrogen in the soil—this is called a mutualistic relationship—and are therefore a useful companion plant, especially useful to grow intercropped with green, leafy vegetables that benefit from high nitrogen content in their soil.
Cultivation and storage
Snow peas can be grown in open fields during cool seasons and can thus be cultivated during winter and spring seasons.
Storage of the pea with films of polymethylpentene at a temperature of 5°C and a concentration of oxygen and carbon dioxide of 5 kPa augments the shelf life, internal and external characteristics of the plant.
History
Austrian scientist and monk Gregor Mendel used peas which he called "Pisum saccharatum" in his famous experiments demonstrating the heritable nature of specific traits, though this latin name might not refer to the same varieties identified with modern snow peas.