Irradiation of vine pollen with gamma rays (in Bulgarian)
The effect of gamma irradiation on the viability and pollination capacity of Vitis vinifera L. pollen was investigated. Results obtained from the investigations carried out in the course of 4 years make it possible to make the following conclusions: Gamma irradiation of vine pollen affects its germination on an artificial nutritive medium. The low doses of 500 and 1000 R exert certain stimulating effects. The pollen germination deteriorates with the increase of the doses since the development of the pollen tubes is inhibited. The dose of 60,000 R does not lead to complete loss of the pollen viability. The increased doses of gamma irradiation of the vine pollen reduce its fertility leading to an increase of the percentage of the undeveloped grains in the branches and reduction of the number of the normal grapes. At irradiation with doses above 20,000 R an ever decreasing part of the flowers develop into grapes, parthenocarpic and normal. At a dose of 60,000 R most of the catkins wither as unpollinated but certain catkins are observed with 2 to 3 very small green grapes. At irradiation of vine with gamma rays for selection purposes doses of 5000 to 10,000 R are considered optimal at which more seeds and developed seedlings are obtained. Doses above 20,000 R appear lethal. (auth)
- Research Organization:
- Komitet za Mirno Izpolzuvane na Atomnata Energiya, Sofia (Bulgaria); Akademiya na Selskostopanskite Nauki, Sofia (Bulgaria)
- NSA Number:
- NSA-29-024468
- OSTI ID:
- 4331724
- Report Number(s):
- INIS-mf--757
- Country of Publication:
- Bulgaria
- Language:
- Bulgarian
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