Barley: The hull is fresh and shiny, and the embryos are full. When the anatomy embryos are observed, the embryonic cuts and radicles are pale yellow and oily and elastic as viable seeds. Where the husk is dull and dull, the embryo part is shrunken or brownish, and when the anatomy embryo is discolored, the radicle is dark yellow or brown, and the dried and fragile is a non-viable seed.
Corn: The same variety of hybrid corn seed, where the color is consistent, the embryo and endosperm parts are not mildew, no mechanical damage is a good seed. Some peasants mistakenly believe that black spots on the embryos are not germinating. This is an illusion. As long as corn embryos do not suffer from frostbite, even exposure of black is a good seed.
Cotton: When cutting cottonseeds, the oil spots on the cut surface are greenish blue, the embryos are white, and the leaves are moist and plump. This marks the seeds intact; the oil spots are dark brown, the radicles are yellow or brown, and the cotyledon is dried and the seed is proved Has gone bad.
Rapeseed: Rapeseed was stripped of the seed coat and observed. The young shoots and young roots were white-green, and the cotyledons were greenish, yellowish-white, yellow, and moist and elastic. The seeds were viable; while the young shoots and young roots were brownish. The cotyledons are also brown, dried, and shrinking as dead seeds.
Cabbage: The seed has a life span of 3 to 5 years and a useful life of 2 to 4 years. The mature and full of new seeds are rusty or reddish-brown. The mature species is golden-red. The epidermis is smooth and fresh, the germ is slightly concave, and the nails are pressed open. The cotyledons are yellowish or yellow-green, and the oil is more, the epidermis is not easy to break; The skin is dark rust or dark brown, dark, dull, often a layer of "white frost", open with the nails, cotyledons orange, the epidermis broken into small pieces.
Cucumber: The seed has a life span of 3 to 5 years and a useful life of 2 to 3 years. The new seed epidermis is milky white or white, glossy, with sharper end burrs, and tougher seed coats. When peeled, the pieces are connected to the tablets. The seed kernels are pressed on the paper and become muddy. The paper is discolored by grease; The skin is dull, with yellow spots, blunt end burrs, and seed coats are more fragile. When peeled, it is not easy to connect. When the seed kernels are placed on paper, they become flaky. The paper is not easy to dye and discolor.
Tomato: The seed has a life span of 3 to 6 years and a useful life of 2 to 3 years. The new seed hair is neat, slanting, long and soft, with no thorns in the palm of the hand, the seed hairs are not easy to get rid of, and when the seeds are cut, the seed kernels are easily squeezed out, showing a milky white color. Can be printed and dyed paper; Chen seeds have a tingling sensation in the palm of your hand, and the hair is easy to be knocked off or disturbed. After the cut, the kernels are yellow-white, and the kernels are pressed into the kernels with a fingernail. The oil is less and the paper is not easy to stain.
Eggplant: The seed has a life span of 3 to 6 years and a useful life of 2 to 3 years. The new seed has orange-yellow skin, yellowish edges, easy slipping when bitten by teeth, twisted when hand twisted, curled at break, cotyledon and seed coat not easy to disassociate; Chen seed epidermis is dull, light orange, with edges The color of the center is the same, when the hand twists, there is no toughness, the breakage is neat, and the skin is brittle.
Pepper: The seed has a life span of 3 to 4 years and a useful life of 2 to 3 years. The new seed epidermis is dark yellow-yellow, orange in the umbilicus, shiny, teeth soft and not easily broken, spicy; Chen seed epidermis is light beige, umbilicus light orange or no orange, dull, The teeth bite hard and brittle, easily broken, spicy or no spicy.
Onion and garlic vegetables: The seed's life span is 1 year to 2 years, and the service life is about 1 year. Including onions, green onions, leeks, etc. The new seed epidermis is dark-black, shiny, endosperm-white and has the original scent of the variety; Chen's seed has a dark black epidermis and yellowish endosperm.
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