Seed set,size, and development after 4x × 2x and 4x × 4x crosses in citrus |
| |
| Authors: | Asim Esen Robert K Soost Giuseppe Geraci |
| |
| Institution: | (1) Department of Plant Sciences, University of California, 92521 Riverside, California, USA;(2) Present address: Department of Biology, Virginia Polytech Institute and State University, 24061 Blacksburg, VA, USA;(3) Present address: Viale Delle Scienze, Centro Per II Miglioramento Genetica Degli Agrumi, 90128 Palermo, Italy |
| |
| Abstract: | Summary As triploids produce seedless fruits the best production is investigated. Comparative studies of embryogenesis, seed set, size, and germination were carried out following 4x×2x and 4x×4x crosses. On the average, both crosses yielded similar numbers and proportions of fully developed seeds per fruit. Seed development and germination took place precociously in 4x×2x seeds as compared to 4x×4x ones. The size of 4x×2x seeds was about 1/6 to 1/3 the size of 4x×4x seeds; thus, they were distinguishable from one another on the basis of size. Similarly, it was found that 3x and 4x seeds could be identified based on size following 4x×2x+4x crosses. It was concluded that 4x×2x crosses would be more successful than 2x×4x crosses for producing triploids. |
| |
| Keywords: | Citrus polyploidy triploidy seed size seed set |
| 本文献已被 SpringerLink 等数据库收录！ |
|
