Chromosomal Behavior During The Microsporogenesis of A Trigeneric Hybrid Involving Triticum, Secale and Leymus

HE Fang; LIU HaiYan; WANG HongGang; LI XingFeng

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Chromosomal Behavior During The Microsporogenesis of A Trigeneric Hybrid Involving Triticum, Secale and Leymus

HE Fang,LIU HaiYan,WANG HongGang,LI XingFeng *

Shandong Agricultural University

*Correspondence author

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Funding: the Natural Science Foundation of China（No.30571156, 30671300）

Opened online: 5 May 2008

Accepted by: none

Citation: HE Fang,LIU HaiYan,WANG HongGang.Chromosomal Behavior During The Microsporogenesis of A Trigeneric Hybrid Involving Triticum, Secale and Leymus[OL]. [ 5 May 2008] http://en.paper.edu.cn/en_releasepaper/content/21085

A trigeneric hybrid involving species from the Triticum, Secale and Leymus had been synthesized by crossing Triticale (Jinsong49) with Tritileymus (950059). Meiotic behaviors of chromosomes from different genomes in trigeneric hybrids F1 were studied. Genomic in situ hybridization (GISH) results showed that Jinsong49 and 950059 had 44 wheat chromosomes and 12 alien chromosomes respectively. GISH results of F1 plant indicated it had 6 rye chromosomes and 6 Leymus chromosomes, and these alien chromosomes rarely paired with wheat chromosomes thus presented as univalents. The micronuclei in microspores were mainly derived from alien chromosomes. Asynchronic chromosomes during the pollen development of F1 plant were also observed.

Keywords:Trigeneric hybrid, Chromosome behavior, GISH, asynchronic

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