A SEED SELECTION SYSTEM FOR VIGOROUS TRUE POTATO SEEDS

Alleviating potato seed tuber shortage in developing countries: Potential of true potato seeds

Although potato is an important food and cash crop globally, its production in developing countries is hampered by constraints such as low soil fertility, pest and diseases and inadequate supply of good quality seed tubers. Lack of good quality seed is mostly a consequent of the prevailing seeds system; in most developing countries, majority of farmers recycle their own seeds or get them from i...

Use of local material in seed-bed mixes for production of seedling from true potato seed

Hydrothermal time analysis of seed dormancy in true (botanical) potato seeds

As seed dormancy is released within a seed population, both the rate and percentage of germination increase progressively with increasing dose of a dormancy-breaking treatment or condition. Population-based models can account for this behaviour on the basis of shifting response thresholds as dormancy is alleviated. In particular, hydrothermal time analysis of germination sensitivity to water po...

Selection for contrasting seed tocopherol content in sunflower seeds

Sunflower oil, with more than 0.9 of tocopherols in the alpha-tocopherol form, supplies more vitamin E than any other vegetable oil. Thus far, no breeding to increase vitamin E levels in sunflower seeds has been conducted. The objective of the present research was to develop sunflower lines with high and low total seed tocopherol content through evaluation and subsequent selection of a large ge...

Seed potato production system in Japan, starting from foundation seed of potato

Potato is one of the staple crops cultivated in upland farming in Japan and is propagated vegetatively by means of tubers. However once infected with diseases, potato yield decreases significantly. And one seed potato can produce approximately only 10 potato tubers. To improve the production system of seed potatoes in Japan, Japanese government established a three-stage propagation system for t...