- What is seed health testing?
- What makes a good seed?
- What are the different classes of seed?
- How do you maintain genetic purity of seeds?
- What are seed borne diseases?
- How do you determine the quality of a seed?
- What is genetic purity of seed?
- What are the steps in sowing of seeds?
- What is seed standard?
- What is the importance of seed testing?
- What is seed infection?
What is seed health testing?
Introduction • Seed Health Testing is a Science of determining the presence or absence of disease causing agents, such as fungi, bacteria and viruses.
Objectives • To determine the health status of a seed lot which in turn establishes the sanitary condition of the seed in commerce..
What makes a good seed?
A good seed produces food that meets the needs of the grower AND the eater. That means nutritional quality and diversity over quantity and conformity. In the past 60 years, industrial agriculture has focused on producing massive quantities of uniform crops, prioritizing yields at the expense of nutrition.
What are the different classes of seed?
Breeder seed.Foundation seed.Registered seed.Certified seed.
How do you maintain genetic purity of seeds?
Maintenance of the genetic purity of hybrid seeds is a complicated one requiring elaborate procedures. The nucleus seed of inbred lines can be maintained by self pollination, sib-pollination, or a combination of the two procedures (hand pollination). Some breeders prefer ‘sibbing” because it maintains vigour.
What are seed borne diseases?
Seed-borne diseases refer to plant diseases disseminated or transmitted by seed. Diseases of plants are caused primarily by three types of pathogens: bacteria, fungi and viruses.
How do you determine the quality of a seed?
Quality Characteristics Seed quality describes the potential performance of a seed lot. Trueness to variety; the presence of inert matter, seed of other crops, or weed seed; germination percentage; vigor; appearance; and freedom from disease are important aspects of seed quality.
What is genetic purity of seed?
Genetic purity refers to trueness to type, or the degree of contamination of seeds caused by undesired genetic varieties or species. The success of hybrid seed production is dependent on the genetic purity of parental lines.
What are the steps in sowing of seeds?
Here are the basics in 10 steps.Choose a container.Start with quality soil. Sow seeds in sterile, seed-starting mix or potting soil available in nurseries and garden centers. … Plant at the proper depth. … Water wisely. … Maintain consistent moisture. … Keep soil warm. … Fertilize. … Give seedlings enough light.More items…
What is seed standard?
Seed Standard consist of: The minimum percentage of pure seeds and maximum permissible limits for inert matter, other crop seeds have been prescribed. The maximum permissible limits for objectionable weeds, seeds infected by seed borne diseases have been prescribed to ensure goods seed health.
What is the importance of seed testing?
Seed testing is required to achieve the following objectives for minimising the risks of planting low quality seeds. To determine if seed meets established quality standards or labelling specifications. To establish quality and provide a basis for price and consumer discrimination among lots in the market.
What is seed infection?
Infection from outside may be introduced through the stigma, the ovary wall or pericarp, and the flower or fruit stalk, and later through the seed coat. A pathogen may penetrate several of these parts of the seed, and in turn infect them. 12.1 INFECTION DIRECTLY FROM THE MOTHER PLANT.