Studies on the Cytology and Fertility in the induced Polyploids of Self-Incompatible Brassica Campestris var. Brown Sarson

Abstract

Cytological study of the induced polyploids of self-incompatible Brassica campestris var. brown sarson revealed the presence of multivalents, univalents, laggards, etc., which lead to irregular separation of chromosomes. However, quite a high percentage of cells showed normal distribution (20 chromosomes to each pole). The polyploid plants in C1 generation were self-compatible or partially self-compatible although the diploids were self-incompatible. The tetraploids had more seed setting than the diploid plants both on self-pollination and open-pollination. © 1968, Japan Mendel Society, International Society of Cytology. All rights reserved.