Seed set size and development after tetra ploid x di ploid and tetra ploid x tetra ploid crosses in citrus

Esen, A.; Soost, R.K.; Geraci, G.

Euphytica 27(1): 283-294

1978


ISSN/ISBN: 0014-2336
DOI: 10.1007/bf00039144
Accession: 006378757

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Abstract
As triploids produce seedless fruits the best production is investigated. Comparative studies of embryogenesis, seed set, size and germination were conducted following 4x .times. 2x and 4x .times. 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 .times. 2x seeds as compared to 4x .times. 4x ones. The size of 4x .times. 2x seeds was about 1/6-1/3 the size of 4x .times. 4x seeds; thus, they were distinguishable from one another on the basis of size. Similarly, 3x and 4x seeds could be identified based on size following 4x .times. 2x + 4x crosses. For producing triploids, 4x .times. 2x crosses would be more successful than 2x .times. 4x crosses.

Seed set size and development after tetra ploid x di ploid and tetra ploid x tetra ploid crosses in citrus