Chloroplast degeneration as a consequence of “hybrid necrosis” in wheat
✍ Scribed by H. Toxopeus; J. G. Th. Hermsen
- Publisher
- Springer
- Year
- 1964
- Tongue
- English
- Weight
- 584 KB
- Volume
- 13
- Category
- Article
- ISSN
- 0014-2336
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✦ Synopsis
The results of a cytological study of hybrid necrosis in wheat are presented. Two types of necrosizing of the leaves have been found viz. necrosis via dull green discoloration, and necrosis via a yellow intermediate colour. In the first case the conglomeration of the cell contents starts when the size of the chloroplasts is only little reduced. In the second case the chloroplasts become very small before forming small lumps or bunches. It is suggested that the conglomeration of the cell contents is more disastrous for the plant than the decrease in size of the chloroplasts. The problem of the genetical and physiological causes of hybrid necrosis is discussed.