밀 유전 배경에서 호밀 B 염색체가 감수분열 염색체 접합에 미치는 영향

• 영문명: Effect of Rye B chromosome on Meiotic Chromosome Association in Wheat (Triticum aestivum L.) Genetic Background
• 발행기관: 한국자원식물학회
• 저자명: 조성우
• 간행물 정보: 『한국자원식물학회지』제35권 제5호, 659~666쪽, 전체 8쪽
• 주제분류: 농수해양 > 기타농수해양
• 파일형태: PDF
• 발행일자: 2022.10.31

영문 초록

The effect of rye B chromosome (rye B) on chromosome association was investigated in meiosis of wheat addition line. The wheat addition line was with one Leymus mollis chromosome and one L. racemosus chromosome which are under homoeologous relationship. Chromosome behavior of the two Leymus chromosomes in wheat genetic background was revealed by genomic in situ hybridization. In the first metaphase, most of the two Leymus chromosomes showed univalent in the wheat addition line without rye B (98.1 ± 0.5%). On the other hand, the wheat addition line with rye B showed higher frequency of bivalent (10.3 ± 0.2%) than wheat addition line without rye B (1.9 ± 0.5%). The wheat addition line without rye B showed abnormal bivalents with abnormal structure while the wheat addition line with rye B showed normal bivalent in low frequency. By rye B, some bivalent was composed of wheat and L. racemosus, and some trivalent was composed of wheat bivalents with L. mollis chromosome. Also, some wheat bivalents showed hyper-crossover, so those wheat bivalents showed abnormal structure compared to other wheat bivalents with normal structure such as ring, rod, and pan.

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Conflicts of Interest

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키워드

Chromosome association Genomic in situ hybridization Rye B Wheat