Are there heteromorphic sex chromosomes in spinach (Spinacia oleraceaL.)?
✍ Scribed by M. S. Ramanna
- Book ID
- 104619385
- Publisher
- Springer
- Year
- 1976
- Tongue
- English
- Weight
- 436 KB
- Volume
- 25
- Category
- Article
- ISSN
- 0014-2336
No coin nor oath required. For personal study only.
✦ Synopsis
Four varieties and two introductions of Spinacia oleracea are cytologically studied in order to determine whether there is a heteromorphic sex chromosome pair in any of the sexes, It is observed that in one and the same preparation, and regardless of the sex of the plants, different cells had homomorphic and heteromorphic condition for chromosome 1 pair. It is concluded that as a result of difterential contraction of chromosomes, the arm ratios and total lengths may vary, and give a distorted impression of certain pair of chromosomes. The absence of heteromorphic pair is confirmed in male and intersex plants by meiotic studies.