CAJ | 학술논문

在本研究室获得的一套小麦-冰草附加系材料中,附加了冰草(1·4)重组P染色体的附加系Ⅱ-21-2出现了较高频率的多价体.对小麦-冰草附加系Ⅱ-21-2的10个不同株系花粉母细胞减数分裂进行观察与统计,结果表明,不同株系均存在低频率的单价体,染色体异常联会主要表现为出现六价体和四价体,其中株系1-7-3出现六价体频率较高,出现六价体的花粉母细胞为41%,而株系1-7-7有13%的花粉母细胞出现四价体.小麦SSR标记分析表明,不同株系存在小麦基因组或P基因组的多态性.小麦一冰草附加系Ⅱ-21-2染色体异常联会可能与附加的P染色体有关,而其分子水平的多态性和重组可能对于遗传改良具有潜在的意义.
재본연구실획득적일투소맥-빙초부가계재료중,부가료빙초(1·4)중조P염색체적부가계Ⅱ-21-2출현료교고빈솔적다개체.대소맥-빙초부가계Ⅱ-21-2적10개불동주계화분모세포감수분렬진행관찰여통계,결과표명,불동주계균존재저빈솔적단개체,염색체이상련회주요표현위출현륙개체화사개체,기중주계1-7-3출현륙개체빈솔교고,출현륙개체적화분모세포위41%,이주계1-7-7유13%적화분모세포출현사개체.소맥SSR표기분석표명,불동주계존재소맥기인조혹P기인조적다태성.소맥일빙초부가계Ⅱ-21-2염색체이상련회가능여부가적P염색체유관,이기분자수평적다태성화중조가능대우유전개량구유잠재적의의.
The high frequency of muhivalents was found in wheat-Agropyron addition line Ⅱ-21-2 which was Agropyron addition line Ⅱ-21-2 were observed.The result showed that there was low-frequency of univalent in all plants and the abnormal chromosome synapses mainly were s and quadrivalents.41% pollen-mother cells in 1-7-3 line hads,while 13% pollen-mother cells in 1-7-7 line had quadrivalents.The analysis of SSR primers from wheat showed that there was polymorphism in wheat genome or P genome of the different plants.Our results suggested that P chromosomes may influence the chromosome synapsis of wheat-Agropyron addition line Ⅱ-21-2 and the molecular polymorphism and recombination of wheat-Agropyron addition line Ⅱ-21-2 may be useful in genetic improvement of wheat.