关键词: 小簇麦, 小偃麦, 杂种, 染色体配对, 易位系

Abstract: The F₁ hybrid plants were obtained between 6x Triticum durum-Dasypyrum villosum amphiploid and 8x Agrotriticum. The analysis of morphology for the hybrid plants and chromosome pairing at meiosis metaphase I in the F₁ hybrid indicate that F₁ plants are morphologically more similar to 8x Agrotriticum, and resistance to powdery mildew and yellow rust are derived from their parents, and univalents in meiotic MI are more than expected, a number of micronuclei in tetrad phase of meiosis are also observed. The hybrid F₁ is partial egg fertile and backcrossed seed is produced when common wheat is as pollen parent, which infer that desirable materials, such as translocarion lines, can be selected from the backcrossed progenies for wheat improvement.

Key words: TRITICUM DURUM-DASYPYRUM VILLOSUM AMPHIPLOI, AGROTRITICUM, HYBRID, CHROMOSOME PAIRING, TRANSLOCATION LINE