Breeding male sterile lines of dutch onion varieties as a preliminary to the breeding of hybrid varieties
✍ Scribed by O. Banga; J. Petiet
- Book ID
- 104617466
- Publisher
- Springer
- Year
- 1958
- Tongue
- English
- Weight
- 524 KB
- Volume
- 7
- Category
- Article
- ISSN
- 0014-2336
No coin nor oath required. For personal study only.
✦ Synopsis
1 . By means of test crossings to American male sterile varieties N ms ms plants were found in Netherlands onion varieties . 2 . In 14 man-days of searching in commercial seed plots 92 male sterile plants (S ms ms) were found . From these plants male sterile descendants were gained . 3 . From the S ms ms and N ms ms plants of the Netherlands variety Primeur a male sterile line that can be reproduced by seed was composed . This material has been given to Netherlands onion breeders, to be used as a partner in a hybrid variety . 4. Two series of test crossings of Primeur to a great many varieties from the Netherlands and from abroad were performed in order to learn something about the combining ability of Primeur and other varieties . The best immediate results were obtained when plants of Primeur were combined with some plants of varieties which are adapted to the same ecological conditions . 5 . For the breeding of a hybrid variety a simple form of recurrent selection is suggested .