【摘要】 利用从荷兰引进的早熟红果和美国引进品种"尼加拉"为材料经超低能离子束诱变,后代进行株系选择,有效地将生长势强、抗病、果肉硬、果皮厚的性状转育到稳定株系P068和T119,并以此作母本、父本,配成杂交组合H406。经组合力测定、生产性试验和各地试种示范,选育出了高抗TMV、叶霉病、灰霉病等病害的优质、硬果型耐贮运番茄新一代杂交种郑大501。更多还原

【Abstract】 As the original materials,an early-mature tomato fruit cultivay from Netherlands and American cultivar Niagara were irradiated by low-energy ion beams.And the progeny P068 and T119 with strong growth,pathogen-resistance,hard pulp and thick pericarp as well,were selected and stabilized.Subsequently,a new hybrid combination H406 was developed by crossing P068 as fe- male with T119 as male.After combination ability analysis,yield potential trial and regional trial,a new hybrid F₁ Zhengda No.501 with hard fruit tolerant to storage was successfully developed.Furthermore,it is highly resistant to TMV （tobacco mosaic virus） dis- ease,leaf mold and gray mold.更多还原